Product Category
STC — 001 to 012
Precision
Structural
Components
12 product lines covering the complete range of mechanical structural hardware — mounting brackets, connection brackets, fixed plates, base plates, adapter plates, connector blocks, clamp blocks, support bases, frame parts, crossbeam members, end caps, and machine frame components. Custom-machined to your drawing from single prototype to production run.
📐
±0.05 mm
General Tolerance
🎯
±0.01 mm
Precision Tolerance
⚙
1 pc MOQ
Prototype to Series
🏭
24 hr
Quote Turnaround
12
Product Lines
Al · Steel · SS
All Materials
12
Product Lines
±0.01mm
Precision Grade
±0.05mm
Standard Grade
1 pc
MOQ
24hr
Quote Turnaround
Mounting Brackets ✦
Connection Brackets ✦
Fixed Plates ✦
Mounting Base Plates ✦
Adapter Plates ✦
Connector Blocks ✦
Clamp Blocks ✦
Support Bases ✦
Frame Parts ✦
Crossbeam Members ✦
End Caps ✦
Machine Frame Parts ✦
Mounting Brackets ✦
Connection Brackets ✦
Fixed Plates ✦
Mounting Base Plates ✦
Adapter Plates ✦
Connector Blocks ✦
Clamp Blocks ✦
Support Bases ✦
Frame Parts ✦
Crossbeam Members ✦
End Caps ✦
Machine Frame Parts ✦
Full Product Range
12 Structural Component
Product Lines
Select a category · All parts CNC machined to your drawing · MOQ 1 piece · CMM inspection standard
Product Categories
Mounting brackets, connection brackets, and fixed plates — the most widely used structural interface hardware across automation, robotics, industrial equipment, and machine tools. CNC machined from solid billet or stress-relieved plate to customer drawing. Standard tolerance ±0.05 mm on general dimensions; ±0.01 mm available on critical hole positions and mating faces. Hard anodize (Al) and zinc plating (steel) standard surface treatments. Any size, any hole pattern, any material — from single prototype to production batch.
STC-001
MOUNTING & CONNECTION / 001 — FEATURED
Mounting Brackets
Custom mounting brackets for attaching motors, sensors, cylinders, actuators, panels, and equipment sub-assemblies to frames, rails, and structures. L-bracket, Z-bracket, and custom profile brackets machined to drawing. Hole pattern position tolerance ±0.01 mm on critical features. Flat mounting faces parallel/perpendicular within 0.02 mm. Lightweighted pocket geometry on aluminium brackets to reduce mass without compromising stiffness. Available in Al6061, Al7075, steel (Q235/S235/mild), and SS304/316. Hard anodize Type III (Al) or zinc phosphate (steel) standard. Any size, any hole count, any material — MOQ 1 piece.
Al6061 · Al7075 · Q235/S235 · SS304/316
Get Quote
STC-002
MOUNTING & CONNECTION / 002
Connection Brackets
Structural joint interface brackets connecting two or more structural members at defined angles. Multiple-face mounting patterns machined in one setup for accurate angular relationship between connected structures. Angular tolerance ±0.1°. Custom interface patterns from DXF or 3D model.
Al6061 · Steel · SS304Get Quote
STC-003
MOUNTING & CONNECTION / 003
Fixed Plates
Precision fixed plates for bolting components to frames and enclosures. Both faces flat and parallel within ±0.02 mm. Through-hole pattern positioned to ±0.01 mm. Countersunk or counterbored options. Edge chamfered for safe handling. Supplied in any thickness from 3 mm.
Al6061 · Al7075 · Steel · SS304Get Quote
Materials: Al6061 · Al7075 · Q235/S235 Steel · SS304 · SS316
Request All 3 →
Mounting base plates serve as the structural foundation for equipment assemblies, motor-gearbox units, and automation modules — their flatness and hole pattern accuracy directly determine the alignment of every component mounted above. Adapter plates bridge incompatible hole patterns or interface geometries between two components or systems, allowing non-standard components to be integrated without custom redesign.
STC-004
BASE & ADAPTER PLATES / 004 — FEATURED
Mounting Base Plates
Equipment mounting base plates for motor-gearbox assemblies, pump units, conveyor drive stations, robot pedestals, and automation equipment foundations. Top surface flatness ±0.02 mm standard; ±0.005 mm precision grade for high-accuracy stages. Stress-relieved Al6061-T651 plate stock eliminates post-machining bow and warp in large plates — critical for plates larger than 300 mm. Threaded hole pattern positioned to ±0.01 mm. Levelling pad or grout hole options. Heavy-duty steel versions in S355 or 4140. Supplied with CMM flatness scan on precision-grade orders.
Al6061-T651 · S355 Steel · 4140 · SS304
Get Quote
STC-005
BASE & ADAPTER PLATES / 005
Adapter Plates
Interface adapter plates bridging incompatible bolt patterns — motor-to-gearbox, gearbox-to-frame, robot flange-to-end-effector, and non-standard component interfaces. Both face patterns in one CNC setup for guaranteed mutual concentricity and flatness. Any two patterns — supplied from 2D DXF or PDF drawing.
Al6061 · Al7075 · Steel · SS304 · TiGet Quote
STC-005B
BASE & ADAPTER PLATES / 005B
Robot Flange Adapter Plates
ISO 9283 robot wrist adapter plates converting between different flange sizes (ISO 25/40/50/63/100/125 mm) or to non-standard custom tool patterns. Flange face runout ≤0.01 mm. Hole position ±0.005 mm. Available for all major robot brands.
Al6061 · Al7075 · SS304 · SteelGet Quote
Materials: Al6061-T651 · Al7075 · S355 Steel · 4140 · SS304 · Titanium
Request All 3 →
Connector blocks serve as multi-face structural nodes joining members from different directions. Clamp blocks provide controlled clamping force onto shafts, rails, tubes, and structural profiles. Support bases carry compressive load and transfer forces from supported components to the base structure. All machined from solid billet for consistent properties — no cast voids, no porosity, no hidden weaknesses.
STC-006
BLOCKS & SUPPORTS / 006 — FEATURED
Connector Blocks
Multi-face structural connector blocks — the joint nodes of equipment frames and machine structures. Three to six machined faces each carrying a bolt pattern, slot, or bore for connecting structural members arriving from different directions. All faces machined in one or two setups to maintain inter-face perpendicularity and position within ±0.02 mm. Face-to-face perpendicularity ≤0.02 mm standard; ≤0.01 mm precision grade. Internal cable routing passages or pneumatic channels machined integral where specified. Aluminium versions hard-anodized; steel versions zinc-phosphated and primed. Custom blocks from 3D model or dimensioned sketch.
Al6061 · Al7075 · Steel · SS304
Get Quote
STC-007
BLOCKS & SUPPORTS / 007
Clamp Blocks
Split clamp blocks for shafts, guide rails, linear rail profiles, tubes, and extrusion profiles. Bore tolerance H7 to H8 matched to shaft diameter. Clamping slot width and depth controlled for target clamp force at specified bolt torque. Shaft contact bore surface Ra ≤0.8 μm standard.
Al6061 · Al7075 · Steel · SSGet Quote
Materials: Al6061 · Al7075 · Q235/S235 Steel · SS304/316 · 4140
Request All 3 →
Frame structural parts, crossbeam and horizontal beam members, end caps and closure covers, and general machine frame components — the skeleton and closure hardware of industrial machines, automation systems, and equipment enclosures. Machined from solid billet or structural plate. Frame components supplied singly or as matched sets with inter-part position tolerances verified by CMM. Machine frame parts supplied with all interface surfaces machined and verified in one coordinate system.
STC-009
FRAME & MACHINE PARTS / 009 — FEATURED
Frame Structural Parts
Machined structural frame members for automation equipment, test rigs, machine tools, and industrial systems — where extruded aluminium profile or welded steel is insufficient and a machined part is required for dimensional accuracy, load capacity, or interface geometry. Machined from Al6061-T651 plate or structural steel billet. Critical interface surfaces machined to ±0.02 mm flatness. Datum faces in single CNC coordinate system for accurate inter-part assembly. Supplied as individual parts or as matched frame sets with inter-part position tolerance documented in CMM report. Mass reduced by pocket geometry where applicable — FEA-guided on request.
Al6061-T651 · Al7075 · S355 · 4140 · SS304
Get Quote
STC-012
FRAME & MACHINE PARTS / 012
Machine Frame Parts
General machine frame structural components — slide beds, column risers, gantry rail seats, and machine base interface pads. Linear guide mounting surfaces ground to parallelism ≤0.01 mm per 500 mm. Hardened steel options for high-wear surfaces. Full CMM report on all precision-grade machine frame parts.
Al6061 · S355 · 4140 · Cast Iron · SSGet Quote
Materials: Al6061-T651 · Al7075 · S355 Steel · 4140 · SS304 · Cast Iron
Request All 4 →
Manufacturing Capability
What Sets Precision Structural
Machining Apart from General Fabrication
📐
Hole Pattern Position to ±0.01 mm
Mounting bracket and base plate hole patterns positioned by CNC to ±0.01 mm — not drilled by hand or on a manual drill press. Position accuracy determines whether bolted assemblies align or need shimming and slotted holes.
±0.01mm positionNo shimming neededCNC all holes
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Multi-Face Parts — Single Coordinate System
Connector blocks and frame parts with features on multiple faces machined in one or two setups from a single datum. All faces share a common coordinate system — no accumulated error from multiple re-fixtures. Inter-face perpendicularity ≤0.02 mm as standard.
Single datumInter-face ≤0.02mmMinimal re-fixture
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Matched Sets — CMM-Verified Assembly
Frame structural parts and crossbeam sets supplied as matched assemblies with inter-part position tolerances verified by CMM. You receive a set of parts that assembles correctly — not parts that each pass individual inspection but accumulate error when assembled.
Matched setsCMM inter-partAssembly-ready
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Clamp Block Bore H7 — Contact Ra ≤0.8 μm
Clamp block bores machined to H7 tolerance with bore surface Ra ≤0.8 μm — controlling slip-stick behaviour and clamping force distribution on shafts and rails. Clamping slot geometry sized for design clamp force at specified bolt torque.
H7 bore toleranceRa ≤0.8μm contactSlot force-designed
📊
Stress-Relieved Plate — No Post-Machining Distortion
Large base plates and frame parts machined from stress-relieved T651 aluminium plate or normalised structural steel to eliminate residual stress-driven distortion after machining. A base plate that is flat when machined must remain flat in service — this requires stress-relieved starting material.
T651 Al plateNormalised steelNo warp in service
⚙
Surface Treatment — Every Material Covered
Hard anodize Type III (Al — wear and corrosion), zinc phosphate + primer (steel — corrosion protection), passivation ASTM A967 (SS), and black anodize (Al — appearance). All surface treatments in-house. Parts delivered treatment-complete — no need to source finishing separately.
Hard anodize T3Zinc phosphatePassivation
Precision Specifications
Tolerances by Part Type — Structural Components
📐
Dimensional Tolerances by Feature
Hole Pos. (CNC)
±0.01 mm
Face Flatness
±0.02 mm
Face Parallel.
±0.02 mm
Face Perp.
≤0.02 mm
Clamp Bore
H7 / H8
Base Flatness Prec.
±0.005 mm
General Dims
±0.05 mm
Angular Tolerance
±0.1°
🏭
Grade & Material Reference
Standard Grade
±0.05mm
General structural dimensions, hole positions, and external profiles.
Precision Grade
±0.01mm
Critical hole patterns, mating faces, and base plate surfaces.
Al Plate Stock
T651
Stress-relieved plate. No post-machining bow or warp on large plates.
Steel Plate Stock
Norm.
Normalised structural steel. S235 / S355 / Q235 / Q345 stocked.
MOQ
1 pc
Prototype to production batch. No minimum order quantity.
Lead Time
7–14 days
Standard parts. Complex multi-face assemblies quoted individually.
Material Selection
Materials for Structural Components
Scroll to browse all stocked structural materials — selected for strength, weight, surface treatability, and application environment.
MAT / 01
Al6061-T651
310 MPa · 2.70 g/cm³ · Stress-Relieved
Standard structural aluminium for mounting brackets, base plates, and frame parts. T651 stress-relieved plate avoids post-machining distortion. Hard anodize Type III for wear and corrosion protection. 70% lighter than steel.
MAT / 02
Al7075-T6
503 MPa · 2.81 g/cm³ · Highest Strength Al
Highest-strength aluminium for structural frame parts, crossbeams, and load-critical brackets where 6061 strength is insufficient. Used where weight must be kept low but loads are high — automation gantries, robot arm links, aerospace brackets.
MAT / 03
Q235 / S235 Mild Steel
370 MPa · 7.85 g/cm³ · Weldable
Low-cost general structural steel for heavy-duty mounting brackets, base plates, and machine frame parts where weight is not a constraint. Zinc phosphate + primer for corrosion protection. Weldable if secondary welding operations required.
MAT / 04
S355 / Q345 Steel
490 MPa · 7.85 g/cm³ · High Strength
High-strength structural steel for heavy-load frames, crossbeams, and machine base parts. 30% stronger than S235/Q235 — allows lighter sections at same load. Normalised plate stock for consistent properties and minimum residual stress.
MAT / 05
SS304 / SS316
515 MPa (304) · 570 MPa (316) · Passivatable
Stainless steel for structural parts in corrosive, food-grade, pharmaceutical, or marine environments. SS304 for general corrosion resistance; SS316 for chloride environments. Passivated per ASTM A967. No coating delamination risk.
MAT / 06
4140 / 42CrMo Alloy Steel
650–1100 MPa (Q+T) · High Fatigue Life
Alloy steel for high-stress connector blocks, clamp blocks, and machine frame parts under dynamic or impact loading. Quench and temper to target hardness after rough machining. Case hardening available for clamp bore surfaces.
Surface Treatments
Surface Treatments for Structural Component Durability
In-house surface treatment capabilities — no outsourcing delay. Treatment completed before delivery.
🔩
Hard Anodize Type III
25–75 μm oxide layer on aluminium. Hardness 400–600 HV. Wear resistance for clamp bores, base plate surfaces, and bracket mounting faces. PTFE impregnation option for corrosion sealing.
Al BracketsBase Plates
🎨
Black Anodize (Type II)
Decorative and functional black oxide on aluminium. Ra ≤ slightly increased vs machined. UV-stable colour. Used for appearance-critical brackets and frame parts requiring low reflectivity.
Al FramesEnclosures
🛡
Zinc Phosphate + Primer
Manganese zinc phosphate conversion coating + epoxy primer on steel structural parts. Excellent corrosion protection for indoor and sheltered outdoor environments. Top-coat painting optional.
Steel FramesBase Plates
⚗
Passivation (ASTM A967)
Citric acid passivation for SS304/316 structural parts. Removes free iron from machined surface; restores Cr₂O₃ passive layer for maximum corrosion resistance in food-grade and chemical environments.
SS BracketsFood Grade
💧
Electroless Nickel (EN)
Uniform 25–75 μm electroless nickel coating on aluminium or steel. Excellent corrosion resistance, hardness ~500 HV, and low friction. Used for clamp bores, base plate surfaces, and corrosive-environment structural parts.
Clamp BoresCorrosive Env.
✦
Powder Coat
Electrostatic powder coat in any RAL colour for aluminium and steel structural frame parts and enclosure components. Typical 60–120 μm dry film. Impact-resistant finish for industrial machine frames.
Machine FramesEnclosures
🔲
Blasting + Clear Coat
Glass bead or alumina blasting for uniform matte finish on aluminium and steel. Followed by clear lacquer for oxidation protection. Provides consistent, aesthetically clean appearance on visible structural frame components.
Frame PartsVisible Parts
Production Workflow
From Drawing to Dimensionally Verified Structural Part
01
DFM Review — Tolerance & Material Confirmation
Drawing reviewed for achievable tolerances, material grade, and surface treatment selection. Stress-relieved vs standard plate stock decision confirmed. Hole pattern complexity and multi-face feasibility reviewed. Quotation and DFM feedback within 24 hours.
02
Material Procurement & Stock Verification
T651 aluminium plate or normalised steel plate selected and verified — stress-relief and material grade confirmed from mill certificate before cutting. No substitution of non-stress-relieved stock on large plate orders.
03
CNC Machining — All Features from Single Datum
Mounting faces, hole patterns, and connector features machined in minimum number of setups from a single datum coordinate. Multi-face connector blocks machined in one or two indexed setups to maintain inter-face accuracy.
04
Deburring & Edge Treatment
All sharp edges chamfered or radiused to ≥R0.3 mm. All internal corners verified burr-free. Threaded holes tested with go/no-go gauge. Parts washed before inspection and surface treatment.
05
CMM Inspection
Critical hole positions, face flatness/parallelism/perpendicularity measured by CMM. Matched frame sets inspected as a set with inter-part positions verified. Dimensional report generated and archived. Precision-grade parts receive full GD&T CMM report.
06
Surface Treatment & Delivery
Surface treatment applied — hard anodize, zinc phosphate, passivation, EN, or powder coat as specified. Parts inspected post-treatment for coating thickness and appearance. CMM report and material certificate enclosed. VCI packaging for steel parts.
Our Advantage
Why Engineers Specify Our Structural Components
±0.01
Hole Position ±0.01 mm — CNC, Not Drilled
Every hole pattern positioned by CNC to ±0.01 mm tolerance — not drilled by hand or on a manual drill press. The difference between an assembly that aligns first time and one that needs slotted holes and shimming to accommodate position error.
Set
Matched Sets — Assembly Verified, Not Just Individual Parts
Frame structural sets inspected as assembled sets — inter-part positions verified by CMM. Parts that each pass individual inspection can still accumulate error that prevents correct assembly. We verify the set, not just the parts.
T651
Stress-Relieved Plate — Flat When Machined, Stays Flat
All large plates machined from T651 stress-relieved aluminium or normalised structural steel. Residual stress in non-stress-relieved stock relaxes after machining, causing the plate to bow. T651 eliminates this. A flat base plate in machining must remain flat in your equipment.
1 pc
MOQ 1 — Prototype to Production, No Minimum
Single prototype to full production run — same machining quality, same CMM inspection, same documentation. No minimum order quantity, no "batch pricing only" for structural components. Custom parts when you need them, in the quantity you need.
Get a Quote
Send Your Drawing.
Get a Quote.
Every enquiry includes a DFM review — tolerance feasibility, material confirmation, and process approach confirmed before production starts. MOQ 1 piece.
24hr
Quote Response
MOQ 1
Prototypes OK
ISO
9001:2015
📐
DFM Review on Every Enquiry
Tolerance feasibility, fixturing strategy, and material confirmation. Specific, actionable feedback — not generic pushback.
🎯
First Article Inspection — Standard
FAI report on every new run. Material certs and surface treatment certs included with every shipment.
🔄
Same Process: Prototype to Production
Process plan from your prototype applies to production batches. No re-qualification when you scale.
⚙
3 / 4 / 5-Axis CNC + Turning
Complex structural parts, shafts, housings, and transmission components. Metals and engineering plastics.
ISO 9001:2015
3/4/5-Axis Milling
CNC Turning
CMM Inspection
Global Delivery