ISO 9001:2015 Certified Precision Manufacturer

Custom Precision
Machine Parts
Manufacturing

CNC Machining, Turning & Milling | Prototype to Mass Production

We manufacture high-precision custom machine parts for industrial, automotive, aerospace, and electronics applications. From simple components to complex multi-axis parts — we deliver accuracy, durability, and consistency at every volume level.

±0.01mm
CNC Tolerance
50+
Materials
3–15d
Lead Time
40+
Countries
ISO 9001:2015
Global Delivery
In-House CMM Lab
CE & SGS Compliant
Technical Specifications

Machine Parts Manufacturing
Capability Table

Detailed specifications covering CNC machining accuracy, material options, surface treatments, and production limits for custom mechanical components.

Category Specification Value / Range Process Type Use Case
CNC Machining Tolerance Dimensional Accuracy ± 0.01 mm 3-Axis / 4-Axis / 5-Axis CNC Precision mechanical parts, housings, brackets
Turning Tolerance Roundness / Diameter ± 0.005 mm CNC Turning / Swiss Turning Shafts, pins, bushings, rotary components
Milling Flatness Surface Flatness ≤ 0.02 mm CNC Milling Plates, brackets, housings, structural parts
Surface Finish Ra Level Ra 0.2 – 3.2 μm CNC / Grinding / Polishing High-finish functional and cosmetic parts
Heat Treatment Hardness Steel Hardness Range 28 – 62 HRC Quenching / Tempering Structural and load-bearing wear parts
Material Types Metals & Plastics Al / Steel / Brass / SUS / POM / PEEK Machining / Turning / Milling All custom machine part applications
Coating Options Protective Coatings Anodizing / Zinc / Nickel / Powder / Black Oxide Surface Treatment Corrosion & wear protection layers
Max Part Size (CNC) Machining Envelope 800 × 500 × 400 mm CNC Milling Medium–large mechanical structures
Max Turning Size Diameter Capacity Ø 5 mm – Ø 300 mm CNC Turning Shafts, rings, flanges, rotary parts
CAD File Formats Supported Data STEP, IGES, STL, PDF, DWG Engineering Review All custom machined component quoting
Product Showcase

Custom Machine Parts
Portfolio

Our portfolio of custom machine parts demonstrates precision machining, complex geometry capability, and reliable production quality across industries. Click any part to view full specifications.

CNC Machined Aluminum Housing
01 — CNC Milling
CNC Machined Aluminum Housing
View Specs
Precision Stainless Steel Shaft
02 — CNC Turning
Precision Stainless Steel Shaft
View Specs
Brass Connector Pin
03 — Swiss Turning
Brass Connector Pin
View Specs
CNC Milled Bracket
04 — 4-Axis Milling
CNC Milled Structural Bracket
View Specs
Custom Gear Component
05 — 5-Axis CNC
Custom Gear Component
View Specs
Threaded Fastener Part
06 — CNC Turning
Threaded Fastener Component
View Specs
Aerospace Structural Component
07 — 5-Axis CNC
Aerospace Structural Component
View Specs
Medical Device Part
08 — CNC Turning
Medical Device Precision Part
View Specs
Multi-axis Complex Machined Part
09 — 5-Axis CNC
Multi-Axis Complex Machined Part
View Specs
Stainless Steel Enclosure
10 — CNC Milling
Stainless Steel Precision Enclosure
View Specs
Titanium Aerospace Fitting
11 — 5-Axis CNC
Titanium Aerospace Fitting
View Specs
Copper Electrical Component
12 — CNC Turning
Copper Electrical Component
View Specs
Manufacturing Capabilities

Machine Parts
Capabilities

From single-axis turning to complex 5-axis simultaneous machining — our in-house capabilities cover the full spectrum of precision part manufacturing from prototype through mass production.

01
3 / 4 / 5-Axis CNC Machining

Full simultaneous multi-axis machining for complex geometries. 5-axis enables undercuts, compound angles, and complex contours in a single setup — reducing setup error and cycle time.

Tolerance ±0.01mm
02
CNC Turning & Swiss Machining

High-precision CNC turning for shafts, pins, bushings, and rotary components. Swiss turning handles micro-precision parts down to Ø5mm with superior surface finish and concentricity.

Tolerance ±0.005mm
03
Precision Milling

Face milling, pocket milling, contour milling, and surface finishing for flat, complex, and free-form surfaces. Flatness ≤0.02mm consistently achieved on hardened and soft materials.

Flatness ≤ 0.02mm
04
Prototype to Mass Production

Single prototypes through full mass production runs on the same equipment with identical quality controls. Short-run flexibility with high-volume cost efficiency — no minimum order constraint.

Low MOQ · High Volume
05
Complex Geometry Machining

Deep pockets, undercuts, thin walls (<0.5mm), compound angles, and freeform surfaces. CAD/CAM simulation validates toolpath before machining to eliminate scrap on complex parts.

5-Axis Simultaneous
06
CMM VERIFIED
Assembly Support

Sub-assembly, press-fit, thread insertion, and component integration services available. CMM-verified assembly dimensions ensure mating part compatibility without secondary fitment.

Full Assembly Available
±0.01mm
CNC Tolerance
±0.005mm
Turning Tolerance
800×500mm
Max Part Size
5-Axis
Max CNC Axes
3–15d
Lead Time
Machining Operations

Manufacturing Processes

We integrate core metal forming and machining operations to produce complete, ready-to-use components in a single production flow.

CNC Milling

3, 4 and 5-axis milling for complex surfaces, pockets, and contours. Indexable cutters and solid carbide endmills for roughing to finishing passes.

±0.005mm
CNC Turning

Single and multi-spindle turning for shafts, sleeves, and rotational components. Tight diameter and roundness tolerances achieved with live tooling capability.

Drilling & Tapping

Precision hole drilling with positional accuracy ±0.01mm. Thread milling and tapping for M1.6–M64 threads. CNC-controlled for consistent pitch and depth.

Ra 0.2μm
Precision Grinding

Surface, cylindrical, and internal grinding for mirror-quality surfaces. Final Ra ≤ 0.2μm achievable with diamond dressing and CBN wheels on hardened components.

±0.003mm
Wire & Sinker EDM

Wire EDM for precision profiles and sharp internal corners. Sinker EDM for blind cavities and complex 3D geometries. ±0.003mm accuracy on hardened materials.

TiN / DLC / CrN
Surface Finishing

Polishing, anodizing, electroplating, powder coating, nitriding, DLC, TiN/TiCN coating. Full post-machining finishing in-house — no outsourcing, full quality control.

End-to-End Process

Engineering &
Production Workflow

A structured 8-step process from drawing review to certified delivery — with engineering checkpoints and quality verification at every stage.

8 STEPS REVIEW MATERIAL CNC 2ND OPS FINISH INSPECT PACK PROGRAM
01
Drawing Review & DFM

2D/3D drawings reviewed for manufacturability — radii, wall thickness, feature accessibility, tolerance feasibility, and material compatibility evaluated before quoting.

02
Material Selection

Engineering grade selection by application: hardness requirements, temperature range, corrosion environment, and machinability. Material certification provided with every order.

03
CNC Programming

CAM programming with toolpath simulation in Mastercam/CATIA. Collision detection and stock verification before cutting. Optimal fixture and datum setup defined.

04
CNC Machining

Multi-axis CNC milling, turning, drilling, and tapping on calibrated production machines. First-article inspection at start of every run to verify setup accuracy.

05
Secondary Operations

Heat treatment, EDM, precision grinding, thread rolling, and press operations performed in-house after primary machining. Full dimensional recheck after each process.

06
Surface Finishing

Anodizing, electroplating, polishing, DLC/TiN coating, and black oxide applied as specified. Surface roughness verified by profilometer after every finish operation.

07
Inspection & QC

CMM dimensional verification, hardness testing, surface roughness measurement, and visual inspection. Full inspection report with measured values vs. drawings issued with every delivery.

08
Packaging & Global Delivery

Anti-rust paper, foam cushioning, and custom packaging per part geometry. Export documentation, certificates, and inspection reports included. DHL/FedEx/sea freight available.

Quality System

Quality Assurance

Every machine part undergoes multi-stage inspection. We measure, document, and certify before any part ships — full traceability from raw material to delivery.

Inspection Equipment
CMM — Coordinate Measuring Machine
3D dimensional verification to ±0.001mm resolution. All critical dimensions measured and documented before release.
Vision Measurement System
Non-contact optical measurement for complex 2D profiles and micro-feature inspection down to 0.002mm.
Surface Roughness Tester
Ra measurement on all machined and finished surfaces. Verifies Ra 0.2–3.2μm range as specified on drawing.
Hardness Tester
Rockwell HRC verification post heat treatment. Confirms hardness is within specification range before assembly or delivery.
Inspection Protocol
Incoming Material Inspection

Mill certificates verified against specification. Chemical composition and hardness spot-tested before machining begins.

100% Material Traceability
First Article Inspection (FAI)

Full dimensional check on first part off every setup. CMM-verified before production run approval. FAI report issued to customer on request.

FAI on Every Setup
In-Process Sampling

Periodic dimensional sampling throughout production run. Statistical process control for high-volume runs maintains capability Cpk ≥ 1.33.

SPC / Cpk ≥ 1.33
Final Dimensional Report

Full inspection report with CMM printout for every critical dimension. Includes measured value, tolerance, and conformance status. Shipped with every order.

Full Inspection Report Included
Material Expertise

50+ Materials
We Machine

Correct material selection is fundamental to part performance and longevity. We stock, source, and certify the right grade for every application, volume, and environment.

Metals & Alloys
Structural metals for precision machined components
Aluminum 6061 / 7075
Lightweight · High strength-to-weight · Anodizable · CNC & turning
Stainless Steel 303 / 304 / 316
Corrosion resistant · Food/medical grade available · High finish
Carbon Steel / Alloy Steel
High strength · Heat-treatable · 1045 / 4140 / 4340 · Shafts, gears
Brass C2600 / Copper C1100
Excellent machinability · Electrical conductivity · Connector components
Titanium Ti-6Al-4V
High strength · Biocompatible · Aerospace & medical grade · Low weight
Tool Steel SKD11 / H13 / DC53
HRC 58–62 · Die and mold components · Wear-resistant applications
Engineering Plastics
High-performance polymers for non-metallic machined parts
POM (Delrin / Acetal)
Low friction · Dimensional stability · Gears, bushings, guides
Nylon PA6 / PA66
Tough · Self-lubricating · Impact resistant · Structural components
PEEK
High temp (250°C) · Chemical resistant · Aerospace / medical
PTFE (Teflon)
Lowest friction coefficient · Chemical inert · Seals, bearings, gaskets
ABS / PC
Good impact resistance · Easy to machine · Enclosures, housings
UHMW-PE / Polycarbonate
High abrasion resistance · Transparent PC for optical or inspection windows
Post-Processing

Surface Finishes
& Coatings

The right surface treatment extends part life, reduces friction, prevents corrosion, and directly improves the functional and cosmetic quality of your machined components.

Anodizing

Type II & Type III hard anodizing for aluminum. Creates hard oxide layer up to 25μm — improves wear, corrosion resistance, and cosmetics. Color options available.

Corrosion resistance +300%
Sandblasting

Uniform matte texture by abrasive blasting. Removes tool marks, improves adhesion for coatings, and provides a consistent cosmetic appearance across all surfaces.

Uniform Ra 1.6–3.2μm
POWDER
Powder Coating

Electrostatic powder application with oven curing. Durable, chip-resistant finish in any RAL colour. Excellent corrosion and UV resistance for outdoor/industrial use.

Chip resistance +200%
Ni / Zn / Cr
Electroplating

Nickel, zinc, chrome, and gold plating for corrosion protection, conductivity, or cosmetics. Precise plating thickness controlled from 2 to 50μm.

Controlled to ±2μm
Ra ≤ 0.2μm
Polishing

Mirror polish Ra ≤ 0.05μm for optical, medical, and high-wear surfaces. Mechanical and electrolytic polishing available. Reduces friction and adhesion.

Ra ≤ 0.05μm achievable
BLACK OXIDE
Black Oxide

Chemical conversion with zero dimensional change (<1μm). Corrosion inhibition, attractive black finish, suitable for steel and stainless steel components.

Zero dimensional change
DLC μ = 0.05
DLC Coating

Diamond-Like Carbon 1–4μm. Friction coefficient as low as 0.05 — ideal for sliding contact surfaces, cutting tools, and wear-intensive precision parts.

Friction coeff. −70%
Custom finishes
available on request
TiN · TiCN · CrN · Nitriding
Market Sectors

Industries Served

Our precision machine parts serve demanding applications across five major industries — wherever tight tolerances, material integrity, and consistent production quality matter.

Automotive
Brackets · Shafts · Housings · Pins

Engine components, transmission parts, structural brackets, and sensor housings for OEM tier-1 and tier-2 automotive suppliers globally.

Aerospace
Fittings · Brackets · Fasteners

High-precision structural fittings, actuator components, and fastener systems in titanium, Inconel, and aluminum. AS9100-compatible documentation.

Medical
Implants · Instruments · Housings

Surgical instrument components, implant fixtures, and diagnostic device housings in biocompatible stainless, titanium, and PEEK materials.

Electronics
Connectors · PCB Components · Enclosures

Precision CNC machined connector housings, PCB mounting brackets, heat sink components, and EMI shielding enclosures for electronics manufacturers.

Industrial
Gears · Bearings · Fixtures · Arms

Machine enclosures, robotic arm components, conveyor hardware, jig fixtures, and automation tooling for industrial machinery manufacturers.

Why SSPrecision

Why Choose Us
for Machine Parts

Technical capability, proven track record, and engineering partnership — from first drawing review to final certified delivery. No subcontracting, full quality ownership.

01
10+ Years Machining Expertise

Since 2014, delivering precision machine parts to global manufacturers across automotive, aerospace, medical, and electronics sectors. 500+ active clients in 40+ countries.

02
±0.01mm Precision Control

CMM-verified dimensional accuracy on every order. Turning to ±0.005mm, grinding to ±0.002mm. Every critical dimension documented and reported before shipping.

03
Complete In-House Capability

CNC milling, turning, EDM, grinding, heat treatment, surface finishing, and CMM inspection — all under one roof. No subcontracting, no quality gaps, full chain of custody.

04
Fast Lead Time: 3–15 Days

Structured workflow from DFM to delivery in 3–15 business days. Prototype same week for urgent programs. Rush capacity available with dedicated engineering resources.

05
Low MOQ + High Volume Support

No minimum order constraint on custom parts. Single prototypes through full production runs — same tooling, same quality system, same engineering support regardless of volume.

06
50+ Materials Available

Full metals portfolio from aluminum and stainless to titanium, copper, and exotic alloys. Plus engineering plastics — POM, PEEK, PTFE, and more — all stocked and certified.

07
ISO 9001:2015 Certified

Certified quality management system with documented SOPs, first-article inspection, in-process control, and final certification. Full inspection report shipped with every order.

Free DFM Review

Upload a drawing — receive material recommendation, tolerance feasibility, and lead time within 24 hours.

Get Free DFM Review →
24-Hour Response Guarantee

Start Your Custom Machine
Parts Project Today

Upload your CAD files and receive a detailed quotation with engineering review within 24 hours. DFM feedback, material recommendation, and tolerance feasibility included at no cost.

ISO 9001:2015 Certified
NDA Available
STEP / IGES / DWG / PDF Accepted
Prototype to Mass Production
Global Express Shipping