{"id":1138,"date":"2026-04-10T07:39:30","date_gmt":"2026-04-10T07:39:30","guid":{"rendered":"https:\/\/hxcnc.com\/?page_id=1138"},"modified":"2026-05-28T06:31:01","modified_gmt":"2026-05-28T06:31:01","slug":"lock-nut-seat","status":"publish","type":"page","link":"https:\/\/hxcnc.com\/fr\/product\/lock-nut-seat\/","title":{"rendered":"si\u00e8ges d'\u00e9crou de verrouillage personnalis\u00e9s"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"1138\" class=\"elementor elementor-1138\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-aabbccdd elementor-section-stretched elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"aabbccdd\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;stretch_section&quot;:&quot;section-stretched&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container 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housings for KM\/KMT-series lock nuts (DIN 981). Thread ground to ISO 4 class, seat-face runout \u2264 0.005 mm, OD concentricity to thread \u2264 0.005 mm. For spindle bearing lock nut assemblies and precision shaft retention.<\/p>\n          <div class=\"hxc-hero2-stats\">\n            <div class=\"hxc-hero2-stat\"><div class=\"hxc-hero2-stat-v\">ISO 4<\/div><div class=\"hxc-hero2-stat-l\">Ground Thread<\/div><\/div>\n            <div class=\"hxc-hero2-stat\"><div class=\"hxc-hero2-stat-v\">\u22640.005<sup>mm<\/sup><\/div><div class=\"hxc-hero2-stat-l\">Seat-Face Runout<\/div><\/div>\n            <div class=\"hxc-hero2-stat\"><div class=\"hxc-hero2-stat-v\">Ra 0.4<sup>\u00b5m<\/sup><\/div><div class=\"hxc-hero2-stat-l\">Ground Finish<\/div><\/div>\n          <\/div>\n          <div class=\"hxc-hero2-btns\">\n            <a href=\"#hxc-cta\" class=\"hxc-btn hxc-p\">Get Instant Quote <span class=\"hxc-ar\">\u2192<\/span><\/a>\n            <a href=\"#hxc-gal\" class=\"hxc-btn hxc-o\">View Our Work<\/a>\n          <\/div>\n        <\/div>\n        <div class=\"hxc-hero2-R\">\n          <div class=\"hxc-hero2-board\">\n            <div class=\"hxc-hero2-ribbon\">\n              <span><span class=\"dot\"><\/span>PART DWG \u00b7 LN-000 LOCK NUT SEAT \u00b7 42CrMo4 IH \u00b7 M30\u00d71.5 ISO 4<\/span>\n              <span>ISO 9001 \u00b7 THREAD GROUND \u00b7 CMM REPORT<\/span>\n            <\/div>\n            <div class=\"hxc-hero2-pin hxc-hero2-pin-a hxc-hero2-pin-1\">ISO 4 Ground Thread<\/div>\n            <div class=\"hxc-hero2-pin hxc-hero2-pin-2\">\u22640.005 Face Runout<\/div>\n            <div class=\"hxc-hero2-scene\">\n              <svg viewBox=\"0 0 480 360\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" aria-label=\"Lock nut seat technical drawing \u2014 shaft end in side elevation showing a ground KM-series fine thread (M30x1.5) highlighted in green with V-thread crest profile, a bearing journal and shoulder seat face which is datum A with a face-runout GD&amp;T frame of 0.005, a phantom KM lock nut engaged over the thread, and an MB lock washer with a bent locking tab. Four corners: thread accuracy class table, KM nut size table, four locking-method end-views, material vs HRC table.\">\n                <defs>\n                  <linearGradient id=\"lnSteel\" x1=\"0\" y1=\"0\" x2=\"0\" y2=\"1\"><stop offset=\"0\" stop-color=\"#94A3B8\"\/><stop offset=\"1\" stop-color=\"#475569\"\/><\/linearGradient>\n                  <radialGradient id=\"lnGlow\" cx=\"50%\" cy=\"50%\" r=\"50%\"><stop offset=\"0\" stop-color=\"rgba(22,163,74,.6)\"\/><stop offset=\"1\" stop-color=\"transparent\"\/><\/radialGradient>\n                <\/defs>\n                <g transform=\"translate(160,196)\">\n                  <ellipse cx=\"0\" cy=\"0\" rx=\"148\" ry=\"32\" fill=\"url(#lnGlow)\" opacity=\".55\"\/>\n                  <text x=\"-145\" y=\"-72\" font-family=\"Roboto Condensed,sans-serif\" font-size=\"9\" font-weight=\"700\" fill=\"#16A34A\">LOCK NUT SEAT \u00b7 KM-SERIES BEARING RETENTION \u00b7 DIN 981<\/text>\n                  <text x=\"-145\" y=\"-62\" font-family=\"Roboto Mono,monospace\" font-size=\"5\" fill=\"rgba(22,163,74,.75)\">42CrMo4 IH HRC 56 \u00b7 M30\u00d71.5 THREAD GROUND ISO 4 \u00b7 MB WASHER<\/text>\n\n                  <g transform=\"translate(-118,-52)\">\n                    <rect x=\"0\" y=\"0\" width=\"62\" height=\"10\" fill=\"none\" stroke=\"#FCD34D\" stroke-width=\".5\"\/>\n                    <line x1=\"14\" y1=\"0\" x2=\"14\" y2=\"10\" stroke=\"#FCD34D\" stroke-width=\".5\"\/>\n                    <path d=\"M 4,8 L 10,2 M 8,2 L 10,2 L 10,4\" stroke=\"#FCD34D\" stroke-width=\".55\" fill=\"none\"\/>\n                    <text x=\"38\" y=\"7\" font-family=\"Roboto Mono,monospace\" font-size=\"6\" fill=\"#FCD34D\" text-anchor=\"middle\" font-weight=\"700\">0.005 A<\/text>\n                  <\/g>\n                  <line x1=\"-87\" y1=\"-42\" x2=\"-58\" y2=\"-16\" stroke=\"#FCD34D\" stroke-width=\".4\" stroke-dasharray=\"2 2\"\/>\n                  <text x=\"-87\" y=\"-44\" font-family=\"Roboto Mono,monospace\" font-size=\"4\" fill=\"rgba(252,211,77,.7)\">seat-face runout<\/text>\n\n                  <g transform=\"translate(30,-52)\">\n                    <rect x=\"0\" y=\"0\" width=\"74\" height=\"10\" fill=\"none\" stroke=\"#FCD34D\" stroke-width=\".5\"\/>\n                    <line x1=\"14\" y1=\"0\" x2=\"14\" y2=\"10\" stroke=\"#FCD34D\" stroke-width=\".5\"\/>\n                    <text x=\"44\" y=\"7\" font-family=\"Roboto Mono,monospace\" font-size=\"5.5\" fill=\"#FCD34D\" text-anchor=\"middle\" font-weight=\"700\">M30\u00d71.5 - 4h<\/text>\n                  <\/g>\n                  <line x1=\"55\" y1=\"-42\" x2=\"0\" y2=\"-14\" stroke=\"#FCD34D\" stroke-width=\".4\" stroke-dasharray=\"2 2\"\/>\n                  <text x=\"92\" y=\"-44\" font-family=\"Roboto Mono,monospace\" font-size=\"4\" fill=\"rgba(252,211,77,.7)\">ISO 4 thread<\/text>\n\n                  <!-- shaft body -->\n                  <path d=\"M -140,-13 L -118,-13 L -118,-20 L -58,-20 L -58,-11 L 50,-11 L 50,-13 L 90,-13 L 90,13 L 50,13 L 50,11 L -58,11 L -58,20 L -118,20 L -118,13 L -140,13 Z\" fill=\"url(#lnSteel)\" stroke=\"#1E293B\" stroke-width=\".8\"\/>\n\n                  <!-- bearing journal zone + phantom bearing inner race -->\n                  <rect x=\"-114\" y=\"-26\" width=\"52\" height=\"5\" fill=\"rgba(22,163,74,.18)\" stroke=\"#16A34A\" stroke-width=\".5\" stroke-dasharray=\"3 2\"\/>\n                  <rect x=\"-114\" y=\"21\" width=\"52\" height=\"5\" fill=\"rgba(22,163,74,.18)\" stroke=\"#16A34A\" stroke-width=\".5\" stroke-dasharray=\"3 2\"\/>\n                  <text x=\"-88\" y=\"-29\" font-family=\"Roboto Mono,monospace\" font-size=\"3.8\" fill=\"rgba(22,163,74,.85)\" text-anchor=\"middle\" font-weight=\"700\">PHANTOM BEARING I\/R<\/text>\n                  <line x1=\"-114\" y1=\"-20\" x2=\"-62\" y2=\"-20\" stroke=\"#16A34A\" stroke-width=\"1.6\"\/>\n                  <line x1=\"-114\" y1=\"20\" x2=\"-62\" y2=\"20\" stroke=\"#16A34A\" stroke-width=\"1.6\"\/>\n                  <text x=\"-88\" y=\"-14\" font-family=\"Roboto Mono,monospace\" font-size=\"4.5\" fill=\"#16A34A\" text-anchor=\"middle\" font-weight=\"700\">\u00d830 k5 JOURNAL<\/text>\n\n                  <!-- datum A on shoulder face -->\n                  <line x1=\"-58\" y1=\"-20\" x2=\"-58\" y2=\"20\" stroke=\"#16A34A\" stroke-width=\"2\"\/>\n                  <g transform=\"translate(-58,26)\"><path d=\"M 0,0 L 3,5 L -3,5 Z\" fill=\"#fff\" stroke=\"#16A34A\" stroke-width=\".4\"\/><rect x=\"-3.5\" y=\"5\" width=\"7\" height=\"6\" fill=\"#fff\" stroke=\"#16A34A\" stroke-width=\".4\"\/><text x=\"0\" y=\"10\" font-family=\"Roboto Mono,monospace\" font-size=\"5\" fill=\"#0F172A\" text-anchor=\"middle\" font-weight=\"700\">A<\/text><\/g>\n                  <text x=\"-58\" y=\"-24\" font-family=\"Roboto Mono,monospace\" font-size=\"4\" fill=\"#16A34A\" text-anchor=\"middle\" font-weight=\"700\">SEAT FACE<\/text>\n\n                  <!-- thread crests (green V profile) -->\n                  <g stroke=\"#16A34A\" stroke-width=\"1.4\" fill=\"none\">\n                    <path d=\"M -54,-11 l 3,-3 l 3,3 M -48,-11 l 3,-3 l 3,3 M -42,-11 l 3,-3 l 3,3 M -36,-11 l 3,-3 l 3,3 M -30,-11 l 3,-3 l 3,3 M -24,-11 l 3,-3 l 3,3 M -18,-11 l 3,-3 l 3,3 M -12,-11 l 3,-3 l 3,3 M -6,-11 l 3,-3 l 3,3 M 0,-11 l 3,-3 l 3,3 M 6,-11 l 3,-3 l 3,3 M 12,-11 l 3,-3 l 3,3 M 18,-11 l 3,-3 l 3,3 M 24,-11 l 3,-3 l 3,3 M 30,-11 l 3,-3 l 3,3 M 36,-11 l 3,-3 l 3,3 M 42,-11 l 3,-3 l 3,3\"\/>\n                    <path d=\"M -54,11 l 3,3 l 3,-3 M -48,11 l 3,3 l 3,-3 M -42,11 l 3,3 l 3,-3 M -36,11 l 3,3 l 3,-3 M -30,11 l 3,3 l 3,-3 M -24,11 l 3,3 l 3,-3 M -18,11 l 3,3 l 3,-3 M -12,11 l 3,3 l 3,-3 M -6,11 l 3,3 l 3,-3 M 0,11 l 3,3 l 3,-3 M 6,11 l 3,3 l 3,-3 M 12,11 l 3,3 l 3,-3 M 18,11 l 3,3 l 3,-3 M 24,11 l 3,3 l 3,-3 M 30,11 l 3,3 l 3,-3 M 36,11 l 3,3 l 3,-3 M 42,11 l 3,3 l 3,-3\"\/>\n                  <\/g>\n\n                  <!-- phantom KM lock nut over thread -->\n                  <rect x=\"-52\" y=\"-24\" width=\"58\" height=\"48\" fill=\"rgba(15,23,42,.35)\" stroke=\"#16A34A\" stroke-width=\".7\" stroke-dasharray=\"4 2\" rx=\"2\"\/>\n                  <g stroke=\"#16A34A\" stroke-width=\".4\" fill=\"none\">\n                    <line x1=\"-52\" y1=\"-20\" x2=\"6\" y2=\"-20\"\/><line x1=\"-52\" y1=\"20\" x2=\"6\" y2=\"20\"\/>\n                  <\/g>\n                  <!-- KM nut slot notches on its right face -->\n                  <g fill=\"rgba(22,163,74,.5)\" stroke=\"#16A34A\" stroke-width=\".3\">\n                    <rect x=\"3\" y=\"-22\" width=\"3\" height=\"4\"\/><rect x=\"3\" y=\"-8\" width=\"3\" height=\"4\"\/><rect x=\"3\" y=\"6\" width=\"3\" height=\"4\"\/><rect x=\"3\" y=\"18\" width=\"3\" height=\"4\"\/>\n                  <\/g>\n                  <text x=\"-23\" y=\"-28\" font-family=\"Roboto Mono,monospace\" font-size=\"4.5\" fill=\"#16A34A\" text-anchor=\"middle\" font-weight=\"700\">KM6 LOCK NUT<\/text>\n\n                  <!-- MB lock washer with bent tab -->\n                  <rect x=\"8\" y=\"-26\" width=\"5\" height=\"52\" fill=\"rgba(22,163,74,.4)\" stroke=\"#16A34A\" stroke-width=\".5\"\/>\n                  <path d=\"M 8,-26 L 8,-32 L 4,-32 L 4,-28\" fill=\"rgba(22,163,74,.5)\" stroke=\"#16A34A\" stroke-width=\".5\"\/>\n                  <text x=\"26\" y=\"-30\" font-family=\"Roboto Mono,monospace\" font-size=\"4.5\" fill=\"#16A34A\" text-anchor=\"middle\" font-weight=\"700\">MB WASHER<\/text>\n                  <text x=\"26\" y=\"-25\" font-family=\"Roboto Mono,monospace\" font-size=\"3.5\" fill=\"rgba(22,163,74,.65)\" text-anchor=\"middle\">bent tab<\/text>\n\n                  <text x=\"70\" y=\"-15\" font-family=\"Roboto Mono,monospace\" font-size=\"4.5\" fill=\"#16A34A\" text-anchor=\"middle\" font-weight=\"700\">\u00d826 PILOT<\/text>\n\n                  <line x1=\"-150\" y1=\"0\" x2=\"100\" y2=\"0\" stroke=\"rgba(22,163,74,.5)\" stroke-width=\".3\" stroke-dasharray=\"6 2 1 2\"\/>\n                  <line x1=\"-58\" y1=\"34\" x2=\"48\" y2=\"34\" stroke=\"#16A34A\" stroke-width=\".5\"\/>\n                  <line x1=\"-58\" y1=\"36\" x2=\"-58\" y2=\"26\" stroke=\"#16A34A\" stroke-width=\".4\" stroke-dasharray=\"2 1\"\/>\n                  <line x1=\"48\" y1=\"36\" x2=\"48\" y2=\"14\" stroke=\"#16A34A\" stroke-width=\".4\" stroke-dasharray=\"2 1\"\/>\n                  <path d=\"M -58,34 l 4,-2 l 0,4 z\" fill=\"#16A34A\"\/><path d=\"M 48,34 l -4,-2 l 0,4 z\" fill=\"#16A34A\"\/>\n                  <text x=\"-5\" y=\"44\" font-family=\"Roboto Mono,monospace\" font-size=\"6.5\" fill=\"#16A34A\" text-anchor=\"middle\" font-weight=\"700\">THREAD L = 18 mm \u00b7 GROUND ISO 4<\/text>\n                <\/g>\n\n                <g transform=\"translate(20,30)\">\n                  <rect x=\"0\" y=\"0\" width=\"172\" height=\"84\" fill=\"rgba(15,23,42,.4)\" stroke=\"#475569\" stroke-width=\"1\" stroke-dasharray=\"4 3\" rx=\"6\"\/>\n                  <text x=\"10\" y=\"14\" font-family=\"Roboto Mono,monospace\" font-size=\"8\" fill=\"rgba(255,255,255,.55)\" letter-spacing=\"1\">THREAD \u00b7 ACCURACY<\/text>\n                  <line x1=\"10\" y1=\"22\" x2=\"162\" y2=\"22\" stroke=\"rgba(255,255,255,.2)\" stroke-width=\".5\"\/>\n                  <text x=\"14\" y=\"30\" font-family=\"Roboto Mono,monospace\" font-size=\"5.5\" fill=\"rgba(255,255,255,.55)\">CLASS<\/text>\n                  <text x=\"86\" y=\"30\" font-family=\"Roboto Mono,monospace\" font-size=\"5.5\" fill=\"rgba(255,255,255,.55)\">PITCH ERR<\/text>\n                  <text x=\"158\" y=\"30\" font-family=\"Roboto Mono,monospace\" font-size=\"5.5\" fill=\"rgba(255,255,255,.55)\" text-anchor=\"end\">METHOD<\/text>\n                  <g font-family=\"Roboto Mono,monospace\" font-size=\"6\">\n                    <rect x=\"10\" y=\"34\" width=\"152\" height=\"11\" fill=\"rgba(22,163,74,.2)\" rx=\"2\"\/>\n                    <text x=\"14\" y=\"42\" fill=\"#22C55E\" font-weight=\"700\">ISO 4 \u25c0<\/text><text x=\"86\" y=\"42\" fill=\"#22C55E\" font-weight=\"700\">\u22640.004<\/text><text x=\"158\" y=\"42\" fill=\"#22C55E\" font-weight=\"700\" text-anchor=\"end\">ground<\/text>\n                    <text x=\"14\" y=\"54\" fill=\"#fff\">ISO 5<\/text><text x=\"86\" y=\"54\" fill=\"rgba(255,255,255,.75)\">\u22640.008<\/text><text x=\"158\" y=\"54\" fill=\"rgba(255,255,255,.65)\" text-anchor=\"end\">ground<\/text>\n                    <text x=\"14\" y=\"64\" fill=\"#fff\">6g<\/text><text x=\"86\" y=\"64\" fill=\"rgba(255,255,255,.75)\">\u22640.02<\/text><text x=\"158\" y=\"64\" fill=\"rgba(255,255,255,.65)\" text-anchor=\"end\">cut<\/text>\n                    <text x=\"14\" y=\"74\" fill=\"#FCD34D\">7g<\/text><text x=\"86\" y=\"74\" fill=\"rgba(252,211,77,.85)\">\u22640.04<\/text><text x=\"158\" y=\"74\" fill=\"rgba(252,211,77,.7)\" text-anchor=\"end\">rolled<\/text>\n                  <\/g>\n                <\/g>\n                <g transform=\"translate(290,30)\">\n                  <rect x=\"0\" y=\"0\" width=\"180\" height=\"84\" fill=\"rgba(15,23,42,.4)\" stroke=\"#475569\" stroke-width=\"1\" stroke-dasharray=\"4 3\" rx=\"6\"\/>\n                  <text x=\"10\" y=\"14\" font-family=\"Roboto Mono,monospace\" font-size=\"8\" fill=\"rgba(255,255,255,.55)\" letter-spacing=\"1\">KM NUT \u00b7 SIZE<\/text>\n                  <line x1=\"10\" y1=\"22\" x2=\"170\" y2=\"22\" stroke=\"rgba(255,255,255,.2)\" stroke-width=\".5\"\/>\n                  <text x=\"14\" y=\"30\" font-family=\"Roboto Mono,monospace\" font-size=\"5.5\" fill=\"rgba(255,255,255,.55)\">NUT<\/text>\n                  <text x=\"86\" y=\"30\" font-family=\"Roboto Mono,monospace\" font-size=\"5.5\" fill=\"rgba(255,255,255,.55)\">THREAD<\/text>\n                  <text x=\"166\" y=\"30\" font-family=\"Roboto Mono,monospace\" font-size=\"5.5\" fill=\"rgba(255,255,255,.55)\" text-anchor=\"end\">WASHER<\/text>\n                  <g font-family=\"Roboto Mono,monospace\" font-size=\"6\">\n                    <text x=\"14\" y=\"40\" fill=\"#fff\">KM5<\/text><text x=\"86\" y=\"40\" fill=\"rgba(255,255,255,.75)\">M25\u00d71.5<\/text><text x=\"166\" y=\"40\" fill=\"rgba(255,255,255,.65)\" text-anchor=\"end\">MB5<\/text>\n                    <rect x=\"10\" y=\"44\" width=\"160\" height=\"11\" fill=\"rgba(22,163,74,.2)\" rx=\"2\"\/>\n                    <text x=\"14\" y=\"52\" fill=\"#22C55E\" font-weight=\"700\">KM6 \u25c0<\/text><text x=\"86\" y=\"52\" fill=\"#22C55E\" font-weight=\"700\">M30\u00d71.5<\/text><text x=\"166\" y=\"52\" fill=\"#22C55E\" font-weight=\"700\" text-anchor=\"end\">MB6<\/text>\n                    <text x=\"14\" y=\"64\" fill=\"#fff\">KM7<\/text><text x=\"86\" y=\"64\" fill=\"rgba(255,255,255,.75)\">M35\u00d71.5<\/text><text x=\"166\" y=\"64\" fill=\"rgba(255,255,255,.65)\" text-anchor=\"end\">MB7<\/text>\n                    <text x=\"14\" y=\"76\" fill=\"#FCD34D\">KM8<\/text><text x=\"86\" y=\"76\" fill=\"rgba(252,211,77,.85)\">M40\u00d71.5<\/text><text x=\"166\" y=\"76\" fill=\"rgba(252,211,77,.7)\" text-anchor=\"end\">MB8<\/text>\n                  <\/g>\n                <\/g>\n                <g transform=\"translate(20,232)\">\n                  <rect x=\"0\" y=\"0\" width=\"172\" height=\"108\" fill=\"rgba(15,23,42,.4)\" stroke=\"#475569\" stroke-width=\"1\" stroke-dasharray=\"4 3\" rx=\"6\"\/>\n                  <text x=\"10\" y=\"14\" font-family=\"Roboto Mono,monospace\" font-size=\"8\" fill=\"rgba(255,255,255,.55)\" letter-spacing=\"1\">LOCKING \u00b7 METHOD<\/text>\n                  <g transform=\"translate(28,48)\">\n                    <circle cx=\"0\" cy=\"0\" r=\"10\" fill=\"rgba(22,163,74,.2)\" stroke=\"#16A34A\" stroke-width=\".6\"\/>\n                    <circle cx=\"0\" cy=\"0\" r=\"5\" fill=\"rgba(15,23,42,.6)\" stroke=\"#16A34A\" stroke-width=\".4\"\/>\n                    <rect x=\"-1.2\" y=\"-13\" width=\"2.4\" height=\"4\" fill=\"#22C55E\" stroke=\"#16A34A\" stroke-width=\".3\"\/>\n                    <text x=\"0\" y=\"22\" font-family=\"Roboto Mono,monospace\" font-size=\"4.5\" fill=\"#22C55E\" text-anchor=\"middle\" font-weight=\"700\">MB TAB \u25c0<\/text>\n                    <text x=\"0\" y=\"28\" font-family=\"Roboto Mono,monospace\" font-size=\"3.5\" fill=\"rgba(22,163,74,.65)\" text-anchor=\"middle\">washer key<\/text>\n                  <\/g>\n                  <g transform=\"translate(64,48)\">\n                    <circle cx=\"0\" cy=\"0\" r=\"10\" fill=\"rgba(22,163,74,.2)\" stroke=\"#16A34A\" stroke-width=\".6\"\/>\n                    <circle cx=\"0\" cy=\"0\" r=\"5\" fill=\"rgba(15,23,42,.6)\" stroke=\"#16A34A\" stroke-width=\".4\"\/>\n                    <circle cx=\"0\" cy=\"-7.5\" r=\"1.6\" fill=\"#22C55E\" stroke=\"#16A34A\" stroke-width=\".3\"\/>\n                    <text x=\"0\" y=\"22\" font-family=\"Roboto Mono,monospace\" font-size=\"4.5\" fill=\"#22C55E\" text-anchor=\"middle\" font-weight=\"700\">SET-SCREW<\/text>\n                    <text x=\"0\" y=\"28\" font-family=\"Roboto Mono,monospace\" font-size=\"3.5\" fill=\"rgba(22,163,74,.65)\" text-anchor=\"middle\">radial<\/text>\n                  <\/g>\n                  <g transform=\"translate(102,48)\">\n                    <circle cx=\"0\" cy=\"0\" r=\"10\" fill=\"rgba(22,163,74,.2)\" stroke=\"#16A34A\" stroke-width=\".6\"\/>\n                    <circle cx=\"0\" cy=\"0\" r=\"7\" fill=\"none\" stroke=\"#22C55E\" stroke-width=\"1.4\" stroke-dasharray=\"2 1.5\"\/>\n                    <circle cx=\"0\" cy=\"0\" r=\"4\" fill=\"rgba(15,23,42,.6)\" stroke=\"#16A34A\" stroke-width=\".4\"\/>\n                    <text x=\"0\" y=\"22\" font-family=\"Roboto Mono,monospace\" font-size=\"4.5\" fill=\"#22C55E\" text-anchor=\"middle\" font-weight=\"700\">NYLON<\/text>\n                    <text x=\"0\" y=\"28\" font-family=\"Roboto Mono,monospace\" font-size=\"3.5\" fill=\"rgba(22,163,74,.65)\" text-anchor=\"middle\">insert ring<\/text>\n                  <\/g>\n                  <g transform=\"translate(140,48)\">\n                    <circle cx=\"0\" cy=\"0\" r=\"10\" fill=\"rgba(22,163,74,.2)\" stroke=\"#16A34A\" stroke-width=\".6\"\/>\n                    <circle cx=\"0\" cy=\"0\" r=\"5\" fill=\"rgba(15,23,42,.6)\" stroke=\"#16A34A\" stroke-width=\".4\"\/>\n                    <circle cx=\"0\" cy=\"0\" r=\"8.5\" fill=\"none\" stroke=\"#22C55E\" stroke-width=\".5\" stroke-dasharray=\"1 1\"\/>\n                    <path d=\"M -6,-6 L 6,6\" stroke=\"#22C55E\" stroke-width=\".4\"\/>\n                    <text x=\"0\" y=\"22\" font-family=\"Roboto Mono,monospace\" font-size=\"4.5\" fill=\"#22C55E\" text-anchor=\"middle\" font-weight=\"700\">LOCK-WIRE<\/text>\n                    <text x=\"0\" y=\"28\" font-family=\"Roboto Mono,monospace\" font-size=\"3.5\" fill=\"rgba(22,163,74,.65)\" text-anchor=\"middle\">drilled<\/text>\n                  <\/g>\n                  <line x1=\"14\" y1=\"88\" x2=\"158\" y2=\"88\" stroke=\"rgba(255,255,255,.15)\" stroke-width=\".4\"\/>\n                  <text x=\"86\" y=\"98\" font-family=\"Roboto Mono,monospace\" font-size=\"5\" fill=\"rgba(255,255,255,.65)\" text-anchor=\"middle\">+ KEYWAY \u00b7 NYLOK \u00b7 CUSTOM<\/text>\n                  <text x=\"86\" y=\"104\" font-family=\"Roboto Mono,monospace\" font-size=\"4\" fill=\"rgba(22,163,74,.85)\" text-anchor=\"middle\" font-weight=\"700\">SPECIFY NUT + WASHER SERIES<\/text>\n                <\/g>\n                <g transform=\"translate(220,232)\">\n                  <rect x=\"0\" y=\"0\" width=\"252\" height=\"108\" fill=\"rgba(15,23,42,.4)\" stroke=\"#475569\" stroke-width=\"1\" stroke-dasharray=\"4 3\" rx=\"6\"\/>\n                  <text x=\"10\" y=\"14\" font-family=\"Roboto Mono,monospace\" font-size=\"8\" fill=\"rgba(255,255,255,.55)\" letter-spacing=\"1\">MATERIAL \u00b7 HRC \u00b7 USE<\/text>\n                  <line x1=\"10\" y1=\"22\" x2=\"242\" y2=\"22\" stroke=\"rgba(255,255,255,.2)\" stroke-width=\".5\"\/>\n                  <text x=\"14\" y=\"32\" font-family=\"Roboto Mono,monospace\" font-size=\"6\" fill=\"rgba(255,255,255,.55)\">MATERIAL<\/text>\n                  <text x=\"138\" y=\"32\" font-family=\"Roboto Mono,monospace\" font-size=\"6\" fill=\"rgba(255,255,255,.55)\">HRC<\/text>\n                  <text x=\"238\" y=\"32\" font-family=\"Roboto Mono,monospace\" font-size=\"6\" fill=\"rgba(255,255,255,.55)\" text-anchor=\"end\">USE<\/text>\n                  <line x1=\"10\" y1=\"38\" x2=\"242\" y2=\"38\" stroke=\"rgba(255,255,255,.1)\" stroke-width=\".4\"\/>\n                  <g font-family=\"Roboto Mono,monospace\" font-size=\"6.5\">\n                    <rect x=\"10\" y=\"40\" width=\"232\" height=\"11\" fill=\"rgba(22,163,74,.2)\" rx=\"2\"\/>\n                    <text x=\"14\" y=\"48\" fill=\"#22C55E\" font-weight=\"700\">42CrMo4 IH \u25c0<\/text><text x=\"138\" y=\"48\" fill=\"#22C55E\" font-weight=\"700\">52\u201358<\/text><text x=\"238\" y=\"48\" fill=\"#22C55E\" font-weight=\"700\" text-anchor=\"end\">spindle \/ std<\/text>\n                    <line x1=\"10\" y1=\"54\" x2=\"242\" y2=\"54\" stroke=\"rgba(255,255,255,.08)\" stroke-width=\".3\"\/>\n                    <text x=\"14\" y=\"64\" fill=\"#fff\">20CrMnTi C<\/text><text x=\"138\" y=\"64\" fill=\"rgba(255,255,255,.75)\">60+<\/text><text x=\"238\" y=\"64\" fill=\"rgba(255,255,255,.65)\" text-anchor=\"end\">heavy drive<\/text>\n                    <line x1=\"10\" y1=\"68\" x2=\"242\" y2=\"68\" stroke=\"rgba(255,255,255,.08)\" stroke-width=\".3\"\/>\n                    <text x=\"14\" y=\"78\" fill=\"#fff\">SUS440C<\/text><text x=\"138\" y=\"78\" fill=\"rgba(255,255,255,.75)\">56\u201358<\/text><text x=\"238\" y=\"78\" fill=\"rgba(255,255,255,.65)\" text-anchor=\"end\">clean room<\/text>\n                    <line x1=\"10\" y1=\"82\" x2=\"242\" y2=\"82\" stroke=\"rgba(255,255,255,.08)\" stroke-width=\".3\"\/>\n                    <text x=\"14\" y=\"92\" fill=\"#fff\">SUS303<\/text><text x=\"138\" y=\"92\" fill=\"rgba(255,255,255,.75)\">~25<\/text><text x=\"238\" y=\"92\" fill=\"rgba(255,255,255,.65)\" text-anchor=\"end\">food \/ pharma<\/text>\n                    <line x1=\"10\" y1=\"96\" x2=\"242\" y2=\"96\" stroke=\"rgba(255,255,255,.08)\" stroke-width=\".3\"\/>\n                    <text x=\"14\" y=\"105\" fill=\"rgba(125,211,252,.85)\">Al 7075 HA<\/text><text x=\"138\" y=\"105\" fill=\"rgba(125,211,252,.7)\">HV400<\/text><text x=\"238\" y=\"105\" fill=\"rgba(125,211,252,.65)\" text-anchor=\"end\">lightweight<\/text>\n                  <\/g>\n                <\/g>\n                <text x=\"468\" y=\"20\" font-family=\"Roboto Mono,monospace\" font-size=\"8\" fill=\"rgba(255,255,255,.4)\" text-anchor=\"end\" letter-spacing=\"1\">SCALE 2:1 \u00b7 MM<\/text>\n              <\/svg>\n            <\/div>\n            <div class=\"hxc-hero2-chips\">\n              <div class=\"hxc-hero2-chip\"><div class=\"hxc-hero2-chip-v\">Spindle \u00b7 Bearing \u00b7 Gearbox \u00b7 Rotor \u00b7 Machine Tool<\/div><div class=\"hxc-hero2-chip-l\">Applications<\/div><\/div>\n              <div class=\"hxc-hero2-chip\"><div class=\"hxc-hero2-chip-v\">42CrMo4 \u00b7 20CrMnTi \u00b7 SUS440C \u00b7 SUS303 \u00b7 Al 7075<\/div><div class=\"hxc-hero2-chip-l\">Materials<\/div><\/div>\n              <div class=\"hxc-hero2-chip\"><div class=\"hxc-hero2-chip-v\">48<span>hr<\/span> Quote \u00b7 4-Day Proto<\/div><div class=\"hxc-hero2-chip-l\">Service<\/div><\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <div class=\"hxc-stats\">\n    <div class=\"hxc-sg\">\n      <div class=\"hxc-st\"><div class=\"hxc-sn\">ISO 4<\/div><div class=\"hxc-sl2\">Ground Thread<br>KM lock nut grade<\/div><\/div>\n      <div class=\"hxc-st\"><div class=\"hxc-sn\">\u22640.005mm<\/div><div class=\"hxc-sl2\">Seat-Face Runout<br>even bearing preload<\/div><\/div>\n      <div class=\"hxc-st\"><div class=\"hxc-sn\">Ra 0.4\u00b5m<\/div><div class=\"hxc-sl2\">Ground Finish<br>bearing journal<\/div><\/div>\n      <div class=\"hxc-st\"><div class=\"hxc-sn\">4 Days<\/div><div class=\"hxc-sl2\">Fastest Delivery<br>prototype orders<\/div><\/div>\n    <\/div>\n  <\/div>\n\n  <div class=\"hxc-s-cd\" id=\"hxc-gal\">\n    <div class=\"hxc-inner\">\n      <div class=\"hxc-gh\">\n        <div>\n          <span class=\"hxc-ey\">Our Work<\/span>\n          <h2 class=\"hxc-h2\">Lock Nut Seats We Have Made<\/h2>\n          <p class=\"hxc-sub\">Precision CNC machined lock nut seats for automotive, robotics, aerospace, medical, and industrial applications.<\/p>\n        <\/div>\n        <a class=\"hxc-btn hxc-o\" href=\"#hxc-cta\" style=\"flex-shrink:0\">Request Similar Part <span class=\"hxc-ar\">\u2192<\/span><\/a>\n      <\/div>\n      <div class=\"hxc-gg\">\n        <div class=\"hxc-gc\"><img decoding=\"async\" alt=\"Lock Nut Seat \u2014 Industrial Drive\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/05\/Lock-Nut-Seats-Industrial-Drive.webp\">\n          <span class=\"hxc-gtag\">42CrMo4 \u00b7 Industrial<\/span><div class=\"hxc-gov\"><div class=\"hxc-gn\">Lock Nut Seat \u2014 Industrial Drive<\/div><div class=\"hxc-gm\">M30\u00d71.5 \u00b7 ISO 4 \u00b7 200 pcs<\/div><\/div><\/div>\n        <div class=\"hxc-gc\"><img decoding=\"async\" alt=\"Lock Nut Seat \u2014 Medical Device\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/05\/Lock-Nut-Seats-Medical-Device.webp\">\n          <span class=\"hxc-gtag\">SUS316L \u00b7 Medical<\/span><div class=\"hxc-gov\"><div class=\"hxc-gn\">Lock Nut Seat \u2014 Medical Device<\/div><div class=\"hxc-gm\">M20\u00d71 \u00b7 Passivated \u00b7 50 pcs<\/div><\/div><\/div>\n        <div class=\"hxc-gc\"><img decoding=\"async\" alt=\"Lock Nut Seat \u2014 Robot Joint\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/05\/Lock-Nut-Seats-Robot-Joint.webp\">\n          <span class=\"hxc-gtag\">Al 7075 \u00b7 Robot<\/span><div class=\"hxc-gov\"><div class=\"hxc-gn\">Lock Nut Seat \u2014 Robot Joint<\/div><div class=\"hxc-gm\">M25\u00d71.5 \u00b7 Anodized \u00b7 80 pcs<\/div><\/div><\/div>\n        <div class=\"hxc-gc\"><img decoding=\"async\" alt=\"Lock Nut Seat \u2014 Aerospace\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/05\/Lock-Nut-Seats-Aerospace.webp\">\n          <span class=\"hxc-gtag\">Ti Grade 5 \u00b7 Aero<\/span><div class=\"hxc-gov\"><div class=\"hxc-gn\">Lock Nut Seat \u2014 Aerospace<\/div><div class=\"hxc-gm\">M18\u00d71 \u00b7 15 pcs<\/div><\/div><\/div>\n        <div class=\"hxc-gc\"><img decoding=\"async\" alt=\"Lock Nut Seat \u2014 General Machinery\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/05\/Lock-Nut-Seats-General-Machinery.webp\">\n          <span class=\"hxc-gtag\">C45 \u00b7 General<\/span><div class=\"hxc-gov\"><div class=\"hxc-gn\">Lock Nut Seat \u2014 General Machinery<\/div><div class=\"hxc-gm\">M35\u00d71.5 \u00b7 300 pcs<\/div><\/div><\/div>\n        <div class=\"hxc-gc\"><img decoding=\"async\" alt=\"Lock Nut Seat \u2014 Precision Instrument\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/05\/Lock-Nut-Seats-Precision-Instrument.webp\">\n          <span class=\"hxc-gtag\">SUS303 \u00b7 Instrument<\/span><div class=\"hxc-gov\"><div class=\"hxc-gn\">Lock Nut Seat \u2014 Precision Instrument<\/div><div class=\"hxc-gm\">M12\u00d71 \u00b7 Ra 0.2\u00b5m \u00b7 100 pcs<\/div><\/div><\/div>\n        <div class=\"hxc-gc\"><img decoding=\"async\" alt=\"Lock Nut Seat \u2014 High Load\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/05\/Lock-Nut-Seats-High-Load.webp\">\n          <span class=\"hxc-gtag\">20CrMnTi \u00b7 Drive<\/span><div class=\"hxc-gov\"><div class=\"hxc-gn\">Lock Nut Seat \u2014 High Load<\/div><div class=\"hxc-gm\">M40\u00d71.5 \u00b7 Carburized \u00b7 150 pcs<\/div><\/div><\/div>\n        <div class=\"hxc-gc\"><img decoding=\"async\" alt=\"Lock Nut Seat \u2014 Full CMM Report\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/05\/Lock-Nut-Seats-Full-CMM-Report.webp\">\n          <span class=\"hxc-gtag\">CMM Verified<\/span><div class=\"hxc-gov\"><div class=\"hxc-gn\">Lock Nut Seat \u2014 Full CMM Report<\/div><div class=\"hxc-gm\">Every piece thread + runout measured<\/div><\/div><\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <div class=\"hxc-s\">\n    <div class=\"hxc-inner\" style=\"text-align:center\">\n      <span class=\"hxc-ey\">How It Works<\/span>\n      <h2 class=\"hxc-h2\" style=\"margin:0 auto 10px\">From Drawing to Finished Part<\/h2>\n      <p class=\"hxc-sub\" style=\"margin:0 auto\">Upload your drawing \u2014 material, thread spec, and surface treatment. Quote in 48 hours.<\/p>\n      <div class=\"hxc-psg\">\n        <div class=\"hxc-ps\"><div class=\"hxc-psn\">01<\/div><div class=\"hxc-pst\">Upload Drawing<\/div><div class=\"hxc-psd\">STEP, DXF, PDF, or sketch with key dimensions and tolerances.<\/div><\/div>\n        <div class=\"hxc-ps\"><div class=\"hxc-psn\">02<\/div><div class=\"hxc-pst\">Quote in 48h<\/div><div class=\"hxc-psd\">Material, process, surface treatment, and firm lead time.<\/div><\/div>\n        <div class=\"hxc-ps\"><div class=\"hxc-psn\">03<\/div><div class=\"hxc-pst\">CNC Machine &amp; Inspect<\/div><div class=\"hxc-psd\">Precision turning, thread grinding, CMM verification, surface treatment.<\/div><\/div>\n        <div class=\"hxc-ps\"><div class=\"hxc-psn\">04<\/div><div class=\"hxc-pst\">Ship Worldwide<\/div><div class=\"hxc-psd\">Full dimensional report. DHL \/ FedEx \/ sea freight.<\/div><\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <div class=\"hxc-s\">\n    <div class=\"hxc-inner\">\n      <div style=\"text-align:center;margin-bottom:36px\">\n        <span class=\"hxc-ey\">Reviews<\/span>\n        <h2 class=\"hxc-h2\">Trusted Lock Nut Seats Manufacturer<\/h2>\n      <\/div>\n      <div class=\"hxc-tsg\">\n        <div class=\"hxc-tsi hxc-rv\"><div class=\"hxc-tss\">\u2605\u2605\u2605\u2605\u2605<\/div><div class=\"hxc-tst\">\"Excellent dimensional consistency across every batch. CMM report matched our incoming inspection perfectly. Lead time as promised.\"<\/div><div class=\"hxc-tshr\"><\/div><div class=\"hxc-tsau\"><div class=\"hxc-tsav\">AK<\/div><div><div class=\"hxc-tsnm\">Alex K.<\/div><div class=\"hxc-tsco\">Mechanical Engineer \u00b7 Germany<\/div><\/div><\/div><\/div>\n        <div class=\"hxc-tsi hxc-rv\"><div class=\"hxc-tss\">\u2605\u2605\u2605\u2605\u2605<\/div><div class=\"hxc-tst\">\"HXC's DFM review caught two design issues before production. Finished parts were perfect first time. Strongly recommended.\"<\/div><div class=\"hxc-tshr\"><\/div><div class=\"hxc-tsau\"><div class=\"hxc-tsav\">SL<\/div><div><div class=\"hxc-tsnm\">Sophie L.<\/div><div class=\"hxc-tsco\">Design Engineer \u00b7 France<\/div><\/div><\/div><\/div>\n        <div class=\"hxc-tsi hxc-rv\"><div class=\"hxc-tss\">\u2605\u2605\u2605\u2605\u2605<\/div><div class=\"hxc-tst\">\"Three years sourcing precision shafts from HXC. Quality consistent, lead times reliable, engineers always responsive.\"<\/div><div class=\"hxc-tshr\"><\/div><div class=\"hxc-tsau\"><div class=\"hxc-tsav\">JT<\/div><div><div class=\"hxc-tsnm\">James T.<\/div><div class=\"hxc-tsco\">Senior Engineer \u00b7 UK<\/div><\/div><\/div><\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <div class=\"hxc-s-sf\" id=\"hxc-faq\">\n    <div class=\"hxc-inner\">\n      <span class=\"hxc-ey\">FAQ<\/span>\n      <h2 class=\"hxc-h2\">Lock Nut Seats \u2014 Frequently Asked Questions<\/h2>\n      <p class=\"hxc-sub\" style=\"margin-bottom:40px\">Technical and sourcing questions answered by our engineers.<\/p>\n      <div class=\"hxc-faq-grid\">\n        <div>\n          <div class=\"hxc-faq-item\"><button aria-expanded=\"false\" class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\">What is a lock nut seat?<span class=\"hxc-faq-icon\">+<\/span><\/button><div class=\"hxc-faq-body\">A lock nut seat is the <strong>threaded section of a shaft that engages a bearing lock nut (KM series)<\/strong> to axially retain and preload the bearing inner race. The thread must be ground (not cut) to ISO 4 class for precise bearing preload control. The face runout of the lock nut seat shoulder must be \u2264 0.005 mm \u2014 a tilted nut face applies non-uniform axial load to the bearing inner race, causing uneven preload distribution.<\/div><\/div>\n          <div class=\"hxc-faq-item\"><button aria-expanded=\"false\" class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\">What thread accuracy is needed for a bearing lock nut?<span class=\"hxc-faq-icon\">+<\/span><\/button><div class=\"hxc-faq-body\">Bearing lock nut threads (KM series per DIN 981) require <strong>ISO 4 class thread accuracy<\/strong> \u2014 pitch error \u2264 0.004 mm\/25 mm, flank angle \u2264 5\u2032, thread OD tolerance 4h. This accuracy is only achievable by <strong>thread grinding<\/strong> \u2014 cut threads have too much pitch error to provide consistent bearing preload. HXC grinds KM-series lock nut threads to ISO 4 class on all precision spindle and bearing shaft orders.<\/div><\/div>\n          <div class=\"hxc-faq-item\"><button aria-expanded=\"false\" class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\">What is the KM series bearing lock nut?<span class=\"hxc-faq-icon\">+<\/span><\/button><div class=\"hxc-faq-body\">The <strong>KM (or KMT) series<\/strong> is the ISO\/DIN standard for bearing lock nuts used on precision shafts. KM nuts feature a fine metric thread (e.g., M30\u00d71.5, M40\u00d71.5) with a lock washer (MB series) or integrated locking feature. The nut is tightened against the bearing inner race to set axial preload, then locked with the washer to prevent loosening during operation. HXC machines KM-series lock nut seats on stepped shafts, spindles, and rotor shafts.<\/div><\/div>\n          <div class=\"hxc-faq-item\"><button aria-expanded=\"false\" class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\">What runout is required for the lock nut bearing face?<span class=\"hxc-faq-icon\">+<\/span><\/button><div class=\"hxc-faq-body\">The bearing face of the lock nut seat \u2014 the shoulder that the bearing inner race bears against \u2014 must have <strong>runout \u2264 0.005 mm<\/strong> to the shaft axis (measured with a dial indicator while rotating the shaft). A tilted seat face applies a bending moment to the bearing inner race, causing non-uniform loading across the ball complement and accelerating fatigue. For ultra-precision spindle applications, \u2264 0.002 mm is required.<\/div><\/div>\n        <\/div>\n        <div>\n          <div class=\"hxc-faq-item\"><button aria-expanded=\"false\" class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\">What is the lead time?<span class=\"hxc-faq-icon\">+<\/span><\/button><div class=\"hxc-faq-body\">Prototype (1\u20135 pcs, turned + thread ground): 4\u20137 days. Small batch (10\u201350 pcs): 7\u201312 days. Production (100\u20131,000 pcs): 10\u201316 days. Stainless or titanium: add 2\u20134 days. Rush production available.<\/div><\/div>\n          <div class=\"hxc-faq-item\"><button aria-expanded=\"false\" class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\">What materials are available?<span class=\"hxc-faq-icon\">+<\/span><\/button><div class=\"hxc-faq-body\"><strong>42CrMo4<\/strong> (induction hardened) for industrial and automotive. <strong>20CrMnTi<\/strong> (carburized) for maximum surface fatigue. <strong>SUS303\/316L\/440C stainless<\/strong> for food, pharma, marine, clean-room. <strong>Al 6061\/7075<\/strong> hard-anodized for lightweight. <strong>Ti Grade 5<\/strong> for aerospace\/medical.<\/div><\/div>\n          <div class=\"hxc-faq-item\"><button aria-expanded=\"false\" class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\">What surface finish is achievable?<span class=\"hxc-faq-icon\">+<\/span><\/button><div class=\"hxc-faq-body\">Standard ground OD \/ journal: Ra 0.4 \u00b5m. Precision bearing seats: Ra 0.2 \u00b5m. Seat face: Ra 0.4 \u00b5m and runout \u2264 0.005 mm. All measured by contact profilometer and reported on the inspection certificate.<\/div><\/div>\n          <div class=\"hxc-faq-item\"><button aria-expanded=\"false\" class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\">Can HXC machine integrated features?<span class=\"hxc-faq-icon\">+<\/span><\/button><div class=\"hxc-faq-body\">Yes \u2014 keyways, splines, MB-washer keyway slots, cross-holes, flats, and tapers are all machined in the same 5-axis turning-milling setup, ensuring concentricity between all features within 0.003 mm TIR. The lock-washer keyway is positioned to DIN 5406.<\/div><\/div>\n          <div class=\"hxc-faq-item\"><button aria-expanded=\"false\" class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\">How do I specify the right KM nut and washer?<span class=\"hxc-faq-icon\">+<\/span><\/button><div class=\"hxc-faq-body\">Match the KM nut to the shaft thread: KM5 = M25\u00d71.5, KM6 = M30\u00d71.5, KM7 = M35\u00d71.5, KM8 = M40\u00d71.5 (per DIN 981). The matching MB lock washer (MB5\u2013MB8) has an inner tab that drops into a keyway in the shaft and an outer tab that bends into a slot in the nut. Specify the nut series and HXC machines the matching thread and washer keyway.<\/div><\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What thread accuracy is needed for a bearing lock nut?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"ISO class 4 \u2014 only achievable by thread grinding. Cut threads have too much pitch error for consistent bearing preload. Pitch error \u2264 0.004 mm\/25 mm, flank angle \u2264 5\u2032.\"}},{\"@type\":\"Question\",\"name\":\"What runout is required on the lock nut face?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"\u2264 0.005 mm to the shaft axis. 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Production: 10\u201316 days.\"}}]}\n<\/script>\n\n<script>\nfunction hxcFaq(btn){var body=btn.nextElementSibling;var isOpen=btn.classList.contains('open');btn.classList.toggle('open',!isOpen);btn.setAttribute('aria-expanded',String(!isOpen));body.classList.toggle('open',!isOpen);}\nvar hxcObs=new IntersectionObserver(function(entries){entries.forEach(function(e,i){if(e.isIntersecting){setTimeout(function(){e.target.classList.add('in');},i*90);}});},{threshold:.08});\ndocument.querySelectorAll('.hxc-rv').forEach(function(el){hxcObs.observe(el);});\n<\/script>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t<div class=\"elementor-element elementor-element-19a082af e-con-full e-flex e-con e-parent\" data-id=\"19a082af\" data-element_type=\"container\" data-e-type=\"container\" id=\"hxc-cta\">\n\t\t<div class=\"elementor-element elementor-element-406014ab e-con-full e-flex e-con e-child\" data-id=\"406014ab\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-51a0a5f elementor-widget elementor-widget-html\" data-id=\"51a0a5f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<!-- HXCNC CTA Left Panel | namespace .HXCL | Elementor HTML Widget -->\n<link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n<link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Roboto:wght@300;400;500;700;900&family=Roboto+Condensed:wght@400;700;900&family=Roboto+Mono:wght@400;500&display=swap\" rel=\"stylesheet\">\n<style>\n.HXCL{\n  --bg:#F7F9FC;--wh:#FFFFFF;--lt:#EEF3F8;\n  --tx:#1F2937;--tx1:#5B6777;--tx2:#9CA8B4;--bd:#D7E0EA;\n  --a:#2563EB;--a2:#1D4ED8;--aA:rgba(37,99,235,.07);--aC:rgba(37,99,235,.20);\n  --ac:#0F766E;--acA:rgba(15,118,110,.08);--acB:rgba(15,118,110,.15);--acC:rgba(15,118,110,.22);\n  --fh:'Roboto 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Quote.<\/em>\n  <\/h2>\n\n  <p class=\"sub\">Every enquiry includes a DFM review \u2014 tolerance feasibility, material confirmation, and process approach confirmed before production starts. MOQ 1 piece.<\/p>\n\n  <!-- Stats row -->\n  <div class=\"stats\">\n    <div class=\"stat\">\n      <div class=\"sv\">24<small>hr<\/small><\/div>\n      <div class=\"sl\">Quote Response<\/div>\n    <\/div>\n    <div class=\"stat\">\n      <div class=\"sv\">MOQ <small>1<\/small><\/div>\n      <div class=\"sl\">Prototypes OK<\/div>\n    <\/div>\n    <div class=\"stat\">\n      <div class=\"sv\">ISO<\/div>\n      <div class=\"sl\">9001:2015<\/div>\n    <\/div>\n  <\/div>\n\n  <!-- Advantage list -->\n  <div class=\"avlist\">\n    <div class=\"avitem\">\n      <div class=\"ico\">&#128208;<\/div>\n      <div>\n        <div class=\"at\">DFM Review on Every Enquiry<\/div>\n        <div class=\"ad\">Tolerance feasibility, fixturing strategy, and material confirmation. Specific, actionable feedback \u2014 not generic pushback.<\/div>\n      <\/div>\n    <\/div>\n    <div class=\"avitem\">\n      <div class=\"ico\">&#127919;<\/div>\n      <div>\n        <div class=\"at\">First Article Inspection \u2014 Standard<\/div>\n        <div class=\"ad\">FAI report on every new run. Material certs and surface treatment certs included with every shipment.<\/div>\n      <\/div>\n    <\/div>\n    <div class=\"avitem\">\n      <div class=\"ico\">&#128260;<\/div>\n      <div>\n        <div class=\"at\">Same Process: Prototype to Production<\/div>\n        <div class=\"ad\">Process plan from your prototype applies to production batches. No re-qualification when you scale.<\/div>\n      <\/div>\n    <\/div>\n    <div class=\"avitem\">\n      <div class=\"ico\">&#9881;<\/div>\n      <div>\n        <div class=\"at\">3 \/ 4 \/ 5-Axis CNC + Turning<\/div>\n        <div class=\"ad\">Complex structural parts, shafts, housings, and transmission components. Metals and engineering plastics.<\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <!-- Cert tags -->\n  <div class=\"certs\">\n    <span class=\"cert hi\">ISO 9001:2015<\/span>\n    <span class=\"cert\">3\/4\/5-Axis Milling<\/span>\n    <span class=\"cert\">CNC Turning<\/span>\n    <span class=\"cert\">CMM Inspection<\/span>\n    <span class=\"cert\">Global Delivery<\/span>\n  <\/div>\n\n<\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-79bb1c7e e-con-full e-flex e-con e-child\" data-id=\"79bb1c7e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2622586 elementor-button-align-stretch elementor-widget elementor-widget-form\" data-id=\"2622586\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;step_next_label&quot;:&quot;Next&quot;,&quot;step_previous_label&quot;:&quot;Previous&quot;,&quot;button_width&quot;:&quot;100&quot;,&quot;step_type&quot;:&quot;number_text&quot;,&quot;step_icon_shape&quot;:&quot;circle&quot;}\" data-widget_type=\"form.default\">\n\t\t\t\t\t\t\t<form class=\"elementor-form\" method=\"post\" name=\"New Form\" aria-label=\"New Form\">\n\t\t\t<input type=\"hidden\" name=\"post_id\" value=\"1138\"\/>\n\t\t\t<input type=\"hidden\" name=\"form_id\" value=\"2622586\"\/>\n\t\t\t<input type=\"hidden\" name=\"referer_title\" value=\"Ground-Thread BearingLock Nut Seats | \u22640.005mm Ra 0.4\u00b5m\" \/>\n\n\t\t\t\t\t\t\t<input type=\"hidden\" name=\"queried_id\" value=\"1138\"\/>\n\t\t\t\n\t\t\t<div class=\"elementor-form-fields-wrapper elementor-labels-above\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-name elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-name\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tName\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[name]\" id=\"form-field-name\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Name\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-field_12786b6 elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_12786b6\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tCompany\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[field_12786b6]\" id=\"form-field-field_12786b6\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Company Name\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-email elementor-field-group elementor-column 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0 571.4 571.4\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M571 393Q571 407 561 418L311 668Q300 679 286 679T261 668L11 418Q0 407 0 393T11 368 36 357H536Q550 357 561 368T571 393Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t\t<select name=\"form_fields[field_0c79fc0]\" id=\"form-field-field_0c79fc0\" class=\"elementor-field-textual elementor-size-sm\">\n\t\t\t\t\t\t\t\t\t<option value=\"aluminium_6061_t6\">Aluminium 6061-T6<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"aluminium_7075_t6\">Aluminium 7075-T6<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"stainless_steel_304\">Stainless Steel 304<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"stainless_steel_316l\">Stainless Steel 316L<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"carbon_steel_4140\">Carbon Steel \/ 4140<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"titanium_ti_6al_4v\">Titanium Ti-6Al-4V<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"brass_c360\">Brass C360<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"copper\">Copper<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"peek\">PEEK<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"pom_acetal\">POM \/ Acetal<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"nylon_pa6_pa66\">Nylon PA6 \/ PA66<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"ptfe_teflon\">PTFE \/ Teflon<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"polycarbonate\">Polycarbonate<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"abs\">ABS<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"other_not_sure\">Other \/ Not sure<\/option>\n\t\t\t\t\t\t\t<\/select>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-select elementor-field-group elementor-column elementor-field-group-field_161b5ef elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_161b5ef\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tSurface Finish\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field elementor-select-wrapper remove-before \">\n\t\t\t<div class=\"select-caret-down-wrapper\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-caret-down\" viewBox=\"0 0 571.4 571.4\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M571 393Q571 407 561 418L311 668Q300 679 286 679T261 668L11 418Q0 407 0 393T11 368 36 357H536Q550 357 561 368T571 393Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t\t<select name=\"form_fields[field_161b5ef]\" id=\"form-field-field_161b5ef\" class=\"elementor-field-textual elementor-size-sm\">\n\t\t\t\t\t\t\t\t\t<option value=\"as_machined\">As-machined<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"anodised_type_ii\">Anodised Type II<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"anodised_type_iii_hard\">Anodised Type III (Hard)<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"electroplating\">Electroplating<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"powder_coating\">Powder Coating<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"black_oxide\">Black Oxide<\/option>\n\t\t\t\t\t\t\t\t\t<option 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viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256C504 119 393 8 256 8S8 119 8 256s111 248 248 248 248-111 248-248zm-448 0c0-110.5 89.5-200 200-200s200 89.5 200 200-89.5 200-200 200S56 366.5 56 256zm72 20v-40c0-6.6 5.4-12 12-12h116v-67c0-10.7 12.9-16 20.5-8.5l99 99c4.7 4.7 4.7 12.3 0 17l-99 99c-7.6 7.6-20.5 2.2-20.5-8.5v-67H140c-6.6 0-12-5.4-12-12z\"><\/path><\/svg>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Submit Enquiry<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/form>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Product Category ISO 4 Ground Thread \u00b7 \u22640.005 Face Runout \u00b7 KM\/KMT LN \/ 001 \u2014 008 Ground-Thread BearingLock Nut Seats Precision CNC machined lock nut seats and bearing lock nut housings for KM\/KMT-series lock nuts (DIN 981). Thread ground to ISO 4 class, seat-face runout \u2264 0.005 mm, OD concentricity to thread \u2264 0.005 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3827,"parent":39,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1138","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v28.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Ground-Thread BearingLock Nut Seats | \u22640.005mm Ra 0.4\u00b5m<\/title>\n<meta name=\"description\" content=\"Precision CNC machined lock nut seats and bearing lock nut housings for KM\/KMT-series lock nuts (DIN 981). Thread ground to ISO 4 class, seat-face runout \u2264 0.005 mm, OD concentricity to thread \u2264 0.005 mm.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hxcnc.com\/fr\/product\/lock-nut-seat\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Custom Lock Nut Seats\" \/>\n<meta property=\"og:description\" content=\"Precision CNC machined lock nut seats and bearing lock nut housings for KM\/KMT-series lock nuts (DIN 981). 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