General Tolerances
Metals: ISO 2768-m. Plastics: ISO 2768-c.
CNC MACHINING SERVICES
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 Capabilities
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 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 moreTECHNICAL TOLERANCES
Tolerances 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: 200 500 mm.
Minimum Part Size
CNC Milling: 5 5 5 mm. CNC Turning: 2 2 mm.
Production Volume
Prototyping: 1-00 pcs. Low volume: 101-0,000 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.
Materials
CNC Machining Materials
Choose from our commonly machined metals and engineering plastics for OEM parts, prototypes, and production projects.
Metal
Aluminum
Aluminum is lightweight, easy to machine, and suitable for structural, enclosure, bracket, and precision OEM parts. It is a common choice for rapid prototypes and repeat production.
Common Grades
6061, 6063, 7075, ADC12
Key Advantages
Lightweight, good machinability, corrosion resistance, and suitable for structural OEM parts.
Typical Applications
Housings, brackets, fixtures, enclosures, heat sinks, and precision components.
Available Finishes
Anodizing, sandblasting, brushing, polishing, powder coating, painting.
Lead Time: Prototype and batch projects available based on drawing review.
View MoreSURFACE FINISHING OPTIONS
CNC Machining Surface Finishes
FSD Precision provides common surface finishing options for CNC machined and die-cast parts, helping improve appearance, corrosion resistance, wear performance, and assembly requirements.
As Machined
Visible machining marks; suitable for functional parts and fast prototypes.
Best for
Prototypes, internal components, and cost-sensitive production runs.
View MoreAnodizing
Corrosion protection and clean color control for aluminum CNC parts.
Best for
Aluminum housings, visible components, and durable OEM parts.
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Sandblasting
Uniform matte texture and surface preparation before coating or anodizing.
Best for
Surface prep, matte texture, and cosmetic baseline finishing.
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Polishing
Improves gloss, touch feel, and visible surface quality on metal parts.
Best for
Visible hardware, decorative parts, and pre-plating surfaces.
View MoreBrushing
Directional grain finish for visible OEM metal faces and enclosure panels.
Best for
Cosmetic metal faces, control panels, and premium enclosure parts.
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Electroplating
Improves corrosion resistance, conductivity, and metallic appearance.
Best for
Connectors, visible hardware, and conductivity-sensitive parts.
View MorePowder Coating
Durable colored finish with strong coverage for industrial OEM parts.
Best for
Enclosures, frames, brackets, and export-ready industrial products.
View MoreBlack Oxide
Dark, low-glare finish on steel parts with light corrosion improvement.
Best for
Steel machine parts, fixtures, and low-glare components.
View MoreNeed a finish for your CNC or die-cast parts?
CNC Parts Gallery
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.
View detailsAluminum Brackets
Lightweight brackets and support parts for fixtures, enclosures, frames, and mounting systems.
View detailsPrecision Shafts
Turned shafts, pins, and round components with stable concentricity and fit requirements.
View detailsPost-machined Die Cast Parts
Cast parts finished with machined datums, bores, and sealing interfaces for final assembly.
View detailsMachined Heat Sinks
Thermal management parts for power electronics, battery systems, and equipment cooling.
View detailsAssembly-ready Metal Components
Machined parts prepared for final fitting, packaging, and repeat production handoff.
View detailsINDUSTRIES WE SERVE
CNC 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 IndustryQUALITY CONTROL
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
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.
CNC Resources / Blog
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.
FAQ
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.
Final CTA
Need engineering feedback on your CNC project?
Use the quote path above when you are ready to continue.