General Tolerances
Metals: ISO 2768-m. Plastics: ISO 2768-c.
CNC Machining Services for Custom OEM Parts
Precision CNC milling, turning, and post-machining support for prototypes, production parts, and assembly-ready components.
From prototype validation to repeat production, FSD supports CNC parts with engineering review, surface finishing, inspection, and export-ready delivery.
FSD CNC Workshop
Milling
Turning
Post-machining
From RFQ Review to CNC Machined Parts Delivery
Drawing Review
Material Confirmation
CNC Machining
Surface Finishing
Final Inspection
Export Packaging
CNC Machining from Prototype to Production
Reliable machining, stable quality and scalable production for global OEM projects.
CNC Machining Services for OEM Parts
FSD Precision provides CNC machining services for custom metal and plastic parts, including milling, turning, drilling, tapping, surface finishing, inspection and export-ready delivery. Parts can be produced from drawings, 3D files, samples, material requirements and tolerance notes for prototype, low-volume and repeat production projects.
Metal & Plastic Parts
Prototype to Production
Drawing-Based Review
Core CNC Machining Processes for OEM Parts
From milling and turning to drilling, tapping and post-machining, FSD Precision supports prototype and production programs with practical shop-floor capability.
CNC MACHINING WORKSHOP
Precision machining for custom OEM components
CNC Milling
Precision milling for housings, brackets, plates, fixtures and structural OEM components.
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CNC Turning
Turning support for shafts, bushings, threaded parts and rotational components.
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3-Axis / 4-Axis / 5-Axis Machining
Multi-axis machining for complex geometries, tighter access and reduced setup transitions.
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Drilling & Tapping
Threaded holes, drilling patterns and assembly-critical features matched to drawing requirements.
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Post-Machining for Die Cast Parts
Secondary machining for cast parts that require critical surfaces, datums, threads or final-fit features.
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Prototype & Batch Production
Flexible routing for prototype validation, low-volume orders and repeat OEM production schedules.
Learn moreTolerances for CNC Machining
Our CNC machining services are designed to support consistent dimensional control for OEM parts, from general production tolerances to tighter precision features based on drawings and inspection requirements.
Final achievable tolerances depend on material, geometry, wall thickness, tooling access, and inspection method.
Precision Tolerances
Tighter tolerances can be achieved based on drawing requirements, GD&T callouts, part geometry, and inspection method. Typical precision features can reach up to +/-0.005 mm for selected applications.
Min Wall Thickness
0.5 mm
Min End Mill Size
0.5 mm
Min Drill Size
1 mm
Maximum Part Size
CNC Milling: 4000 × 1500 × 600 mm. CNC Turning: Ø200 × 500 mm.
Minimum Part Size
CNC Milling: 5 × 5 × 5 mm. CNC Turning: Ø2 × 2 mm.
Production Volume
Prototyping: 1-100 pcs. Low volume: 101-10,000 pcs. High volume: Above 10,001 pcs.
Lead Time
Most projects: about 5 business days. Simple parts can be delivered as fast as 1 day depending on geometry, material, and workshop load.
CNC Machining Materials
Click a material to review common grades, finishing options, applications, and RFQ details. Hovering over the material list only highlights the item, so the right-side detail stays stable until you select a material.
Metal Material
Aluminum
Lightweight and machinable material for housings, brackets, heat sinks, covers, fixtures, and prototype-to-production CNC parts.
Common Grades6061, 6063, 6082, 7075
Finish OptionsAnodizing, hard anodizing, powder coating, polishing
Typical UsesLightweight housings, brackets, panels, heat sink parts
Specification CheckConfirm tolerance, flatness, thread details, surface finish and cosmetic requirements.
For quotation, send drawings, material grade, quantity, tolerance notes, surface finish requirement, and application details.
CNC Machining Surface Finishes
Select surface finishes according to part function, appearance, corrosion resistance, wear requirement, conductivity, assembly interface and customer drawing notes.
As Machined
- ✓Visible machining marks
- ✓Fast prototype and functional part option
- ✓Cost-sensitive production support
Anodizing
- ✓Common for aluminum CNC parts
- ✓Improves appearance and corrosion resistance
- ✓Clear, black or custom color options
Plating
- ✓Nickel, zinc or other project-specific plating
- ✓Supports corrosion and wear requirements
- ✓Suitable for selected steel, copper and brass parts
Powder Coating / Painting
- ✓Color and appearance control
- ✓Protective coating for housings and panels
- ✓Useful for customer-facing industrial components
Sandblasting / Brushing
- ✓Matte or directional texture options
- ✓Often combined with anodizing or coating
- ✓Improves visual consistency for CNC surfaces
Polishing / Custom Finish
- ✓Appearance or surface smoothness improvement
- ✓Custom finish reviewed by drawing or sample
- ✓Finish selection based on application requirement
Manufacturing Route and Tolerance Review
| Buyer Situation | Recommended Route | Precision / Tolerance Focus | Why It Fits |
|---|---|---|---|
| Prototype or low-volume metal parts | CNC Machining | ±0.01 mm | No mold required, faster design validation, suitable for engineering changes. |
| Critical holes, threads, mating surfaces | CNC Machining / Post-Machining | ±0.01 mm | Best for functional features where assembly fit or sealing surface quality matters. |
| High-volume aluminum housings | Die Casting + CNC Post-Machining | ±0.05 mm | Balances volume efficiency, tooling investment, and precision on key interfaces. |
| Sheet metal brackets or covers | Stamping / Sheet Metal Fabrication | ±0.10 mm | More suitable for sheet metal structures, brackets, clips, covers and repeat parts. |
| Plastic housings in repeat production | Injection Molding | ±0.05 mm | Good for repeat plastic production after structure, material and tooling route are confirmed. |
Prototype or low-volume metal parts
Recommended RouteCNC Machining
Precision / Tolerance Focus±0.01 mm
Why It FitsNo mold required, faster design validation, suitable for engineering changes.
Critical holes, threads, mating surfaces
Recommended RouteCNC Machining / Post-Machining
Precision / Tolerance Focus±0.01 mm
Why It FitsBest for functional features where assembly fit or sealing surface quality matters.
High-volume aluminum housings
Recommended RouteDie Casting + CNC Post-Machining
Precision / Tolerance Focus±0.05 mm
Why It FitsBalances volume efficiency, tooling investment, and precision on key interfaces.
Sheet metal brackets or covers
Recommended RouteStamping / Sheet Metal Fabrication
Precision / Tolerance Focus±0.10 mm
Why It FitsMore suitable for sheet metal structures, brackets, clips, covers and repeat parts.
Plastic housings in repeat production
Recommended RouteInjection Molding
Precision / Tolerance Focus±0.05 mm
Why It FitsGood for repeat plastic production after structure, material and tooling route are confirmed.
Tolerance values are early buyer-review references, not fixed guarantees. FSD Precision confirms manufacturability, tolerance, inspection method, and process route after reviewing drawings, samples, material, quantity, and application requirements.
Representative part categories and machining applications
Common machined part families supported across prototype validation, bridge builds, and repeat production programs.
CNC Machined Housings
Precision housings for control units, electronics, thermal modules, and assembly-facing OEM products.
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Aluminum Brackets
Lightweight brackets and support parts for fixtures, enclosures, frames, and mounting systems.
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Precision Shafts
Turned shafts, pins, and round components with stable concentricity and fit requirements.
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Post-machined Die Cast Parts
Cast parts finished with machined datums, bores, and sealing interfaces for final assembly.
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Machined Heat Sinks
Thermal management parts for power electronics, battery systems, and equipment cooling.
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Assembly-ready Metal Components
Machined parts prepared for final fitting, packaging, and repeat production handoff.
View detailsCNC Machining for Various Industries
FSD Precision provides CNC machining support for a wide range of OEM industries, from prototype development to batch production. We help buyers improve precision, delivery efficiency, and manufacturing consistency.
Our CNC machining services are commonly used for structural parts, precision housings, functional components, fixtures, and custom mechanical assemblies.
From prototype validation to repeat production, we support practical machining needs across multiple industrial sectors.
Automotive
Machined brackets, housings, and structural parts for automotive systems.
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Robotics & Automation
Precision parts for fixtures, bases, and automated equipment modules.
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Semiconductor Equipment
Tight-tolerance machined parts for semiconductor tools and assemblies.
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Medical Devices
Precision components for medical housings, fixtures, and support systems.
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Industrial Equipment
Custom machined parts for industrial machinery and mechanical assemblies.
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New Energy
Machined parts for battery, thermal management, and energy equipment systems.
View IndustryEquipment, Inspection and Delivery Support
FSD Precision supports CNC machining projects with coordinated manufacturing resources, drawing-based inspection planning and export-ready project follow-up. Specific capacity and inspection scope should be confirmed by project requirements.
Capacity
CNC Machining Resources
300+ CNC machines coordinated for milling, turning, drilling, tapping, fixture machining and repeat production support.
Inspection
Quality Report Options
FAI, dimensional inspection report, CMM report, material certificate, surface finish check and final inspection report available upon request.
Engineering
Drawing-Based Review
Engineering review covers material fit, tolerance risk, surface finish, thread features, assembly interface and manufacturability before quotation.
Delivery
Prototype to Production
Support for prototypes, low-volume builds, repeat production, packaging coordination and export delivery for OEM projects.
Inspection checkpoints aligned to drawing and delivery requirements
Quality control steps are planned to support dimensional consistency, finish verification, and shipment readiness.
01
Drawing review before quotation
02
Material confirmation
03
In-process dimensional inspection
04
Final dimensional check
05
Surface quality review
06
Packaging confirmation
07
Inspection report if required
Why Choose FSD Precision for CNC Machining?
FSD Precision supports OEM buyers with equipment capacity, inspection control, experienced teams, and one-stop manufacturing coordination from drawing review to final delivery.
300+ CNC Machines
Equipment capacity
ISO 9001 Quality System
Quality system
Engineering Review Support
Pre-quote support
One-Stop Manufacturing Service
Project coordination
01
Equipment Capacity
FSD Precision supports CNC machining projects with scalable machining resources for prototypes, low-volume orders, and repeat OEM production.
- CNC milling, turning, drilling, tapping and post-machining
- Support for prototypes, small batches and production runs
- Flexible capacity for different part sizes and project stages
02
Inspection & Quality Control
Quality control is planned around drawing requirements, critical dimensions, surface finish, and assembly needs.
- CMM, calipers, micrometers and thread gauges
- In-process checks and final inspection
- Inspection reports available upon request
03
Engineering & Production Team
Our team reviews drawings, materials, tolerances, surface finish, and application conditions before confirming the production route.
- Drawing review before quotation
- DFM and machining feasibility support
- Clear communication during project execution
04
One-Stop Manufacturing Service
FSD Precision coordinates machining, secondary processing, finishing, inspection, packaging, and delivery under one project workflow.
- CNC machining + die casting + tooling support
- Surface finishing, assembly and packaging coordination
- Export-ready delivery support for OEM buyers
Need help evaluating your CNC drawings?
Upload your drawings for engineering review and we will check process fit, tolerances, and production readiness.
Helpful references before quotation and design review
These resource pages support process planning, material decisions, and finish selection for CNC parts.
CNC Machining Design Guide
Review design considerations that support manufacturability, tolerances, and stable machining workflows.
CNC Material Selection Guide
Compare common metals and engineering plastics used for custom CNC parts and production components.
CNC Surface Finish Guide
Understand finish options for appearance, corrosion resistance, and assembly-ready part delivery.
What to Send for a CNC Machining Quote
Providing these details helps our team review manufacturability, machining route, inspection scope and quotation more efficiently.
Drawings / 3D files
2D drawings, STEP, IGES or sample photos if available.
2D drawings, STEP, IGES or sample photos if available.
Material and quantity
Aluminum, steel, stainless steel, brass, copper or engineering plastics.
Aluminum, steel, stainless steel, brass, copper or engineering plastics.
Tolerance and inspection
Critical dimensions, GD&T, FAI, CMM or dimensional report requirements.
Critical dimensions, GD&T, FAI, CMM or dimensional report requirements.
Finish and application
Anodizing, plating, painting, polishing, assembly fit and end-use environment.
Anodizing, plating, painting, polishing, assembly fit and end-use environment.
Common questions before CNC quotation
These answers help buyers prepare the right files, confirm process fit, and understand project support scope.
What files should I send for CNC machining quotation?
Please send 2D drawings, 3D files, material requirements, quantity, tolerance notes, surface finish requirements, and target lead time if available.
Can you support both prototypes and production parts?
Yes. FSD Precision supports prototype validation, low-volume builds, and repeat production depending on project requirements.
Can you machine die cast parts after casting?
Yes. We can support post-machining for die cast parts, including drilling, tapping, milling, critical surface machining, and inspection.
What materials can you CNC machine?
We support common metals such as aluminum, steel, stainless steel, brass, copper, and selected engineering plastics such as POM, nylon, ABS, PC, and PEEK.
Can you provide surface finishing for CNC parts?
Yes. Surface finishing options can include anodizing, plating, powder coating, sandblasting, polishing, brushing, painting, and black oxide depending on project needs.
How do you control CNC machining quality?
Quality control can include drawing review, material confirmation, in-process inspection, final dimensional checks, surface quality review, and packaging confirmation.
Need a CNC Machining Quote?
Send drawings, material requirements, tolerance notes, surface finish requirements and quantities. Our team will review manufacturability and quotation scope before production.