Item	Details
Product Type	Custom CNC Machined Parts, Precision CNC Components, OEM Machined Parts
CNC Processes	CNC Turning, CNC Milling, 5-Axis CNC Machining, CNC Turn-Mill Machining
Part Types	Shafts, Pins, Bushings, Sleeves, Spacers, Flanges, Fittings, Brackets, Plates, Housings, Manifolds, Valve Bodies and other custom components
Materials	Aluminum, Stainless Steel, Carbon Steel, Alloy Steel, Brass, Copper, Titanium and other engineering metals
Part Size	Custom dimensions according to customer drawings and machining requirements
Machining Tolerance	Standard and tight tolerances available according to part geometry, material and customer drawings
Surface Finishes	As Machined, Anodizing, Hard Anodizing, Bead Blasting, Polishing, Brushing, Passivation, Black Oxide, Plating and other finishes
Production Volume	Prototypes, Low-Volume Production, Small Batch and Production Runs
Drawing & CAD Files	2D Drawings, 3D CAD Files, STEP, STP, IGES, X_T, DWG, DXF and other commonly used formats
Inspection	Dimensional Inspection, Caliper & Micrometer Inspection, CMM Inspection, Thread Inspection and other inspection methods
Quality Documents	Inspection Reports, Material Test Certificates (MTC), Certificates of Conformity and other documentation as required
Customization	Custom dimensions, materials, tolerances, surface finishes and production requirements
Applications	Aerospace, Automotive, Medical, Robotics, Industrial Equipment, Electronics, Industrial Automation, Hydraulic, Marine and Semiconductor Equipment
Packaging	Individual Protection, Foam/Bubble Wrap, Cartons, Pallets and Export Wooden Cases according to part requirements
Ordering	Quote based on drawings, specifications, material, quantity and production requirements

 

Need a custom CNC machined part? Send us your drawing, CAD file, material requirement and quantity for a production review and quotation.

 

Our CNC machined parts are manufactured to customer drawings and controlled through dimensional inspection, GD&T verification and material traceability. Standard tolerances are applied to general features, while tighter tolerances are available for critical dimensions and functional surfaces.

Quality Requirement	Typical Capability / Specification
General Machining Tolerance	±0.01 mm to ±0.05 mm, depending on part size, material and machining process
Precision Machining	Tolerances down to ±0.005 mm available for selected features and suitable materials
Hole Diameter Tolerance	Typically ±0.01 mm for precision holes
Shaft Diameter Tolerance	Typically ±0.01 mm for precision turned shafts
Flatness	Controlled according to drawing; tighter flatness available for machined reference surfaces
Parallelism	Controlled according to specified GD&T requirements
Perpendicularity	Controlled according to drawing and GD&T requirements
Concentricity / Runout	Controlled for shafts, bores and other rotating components
Position Tolerance	Controlled according to customer GD&T requirements
Thread Accuracy	Metric, UNC, UNF and other specified thread standards available
Surface Roughness	Typically Ra 0.8–3.2 μm for machined surfaces; finer finishes available
Dimensional Inspection	Calipers, micrometers, height gauges, bore gauges and precision gauges
CMM Inspection	Available for complex parts, critical dimensions and GD&T inspection
Material Verification	Material grade verification and MTC / material certificates available according to order requirements
Final Inspection	Dimensional inspection, visual inspection and functional checks according to inspection requirements
Inspection Documentation	Inspection reports, dimensional reports, MTC and COC available according to customer requirements

 

We offer a range of surface finishing options for CNC machined metal parts to improve appearance, corrosion resistance, wear resistance and functional performance. Surface finishes are selected according to the material, application and customer requirements.

Surface Finish	Typical Materials	Main Benefits	Typical Appearance / Application
As Machined	Aluminum, Steel, Stainless Steel, Brass, Copper, Titanium	Cost-effective, maintains the machined surface	Natural machining marks; suitable for functional components
Anodizing	Aluminum	Corrosion resistance, surface hardness and appearance	Clear, black or colored finish
Hard Anodizing	Aluminum	Higher wear resistance and surface hardness	Hard protective oxide layer; commonly used for industrial components
Bead Blasting	Aluminum, Stainless Steel, Steel	Removes machining marks and creates a uniform texture	Matte or satin surface
Polishing	Stainless Steel, Aluminum, Brass, Copper	Improves surface smoothness and appearance	Smooth or bright finish
Brushing	Stainless Steel, Aluminum, Brass	Creates a consistent directional texture	Satin / brushed appearance
Passivation	Stainless Steel	Improves corrosion resistance and removes free iron from the surface	Natural metallic appearance
Black Oxide	Carbon Steel, Alloy Steel, Stainless Steel	Corrosion protection and reduced light reflection	Black or dark finish
Zinc Plating	Carbon Steel, Alloy Steel	Corrosion protection	Zinc-coated metallic finish
Nickel Plating	Steel, Copper, Brass	Corrosion resistance, wear resistance and appearance	Bright or semi-bright metallic finish
Powder Coating	Aluminum, Steel, Stainless Steel	Durable protection and color options	Uniform colored coating

 

Inspection Stage	Inspection Items	Inspection Methods / Equipment
Incoming Material Inspection	Material grade, dimensions, surface condition	Material certificates, dimensional measurement, visual inspection
Material Verification	Chemical composition and material identification	Material Certificate (MTC), PMI / material verification when required
First Article Inspection	Critical dimensions, tolerances, threads, holes and geometry	CMM, micrometers, calipers, gauges and other precision instruments
In-Process Inspection	Key dimensions and machining features	Calipers, micrometers, bore gauges, height gauges and gauges
Dimensional Inspection	Length, diameter, hole size, thickness and other dimensions	Precision measuring instruments and CMM
GD&T Inspection	Flatness, parallelism, perpendicularity, position, concentricity and runout	CMM and dedicated inspection gauges
Thread Inspection	Thread size, pitch and fit	Thread gauges, plug gauges and ring gauges
Surface Inspection	Surface defects, machining marks and finish quality	Visual inspection and surface roughness measurement
Surface Finish Inspection	Coating, anodizing, plating or other treatments	Visual inspection, coating thickness measurement when required
Final Inspection	Overall dimensions, appearance and specified requirements	Drawing-based final inspection
Packaging Inspection	Part protection, quantity, labeling and packaging condition	Visual inspection and shipment verification
Inspection Documentation	Dimensional results, material information and conformity	Inspection Reports, MTC, COC and other documents as required

 

Quality Documentation

For qualified orders, the following documents can be provided according to customer requirements:

Document	Purpose
Dimensional Inspection Report	Records actual measured dimensions against drawing requirements
Material Test Certificate (MTC)	Verifies material grade and material properties
Certificate of Conformity (COC)	Confirms compliance with specified requirements
FAI Report	Documents first article inspection results for new or critical parts
Material Traceability Records	Links supplied material to the production order when required

Request Inspection Details

 

We manufacture custom CNC machined parts according to customer drawings, CAD files, samples and technical specifications. From prototypes and small batches to production orders, machining processes, materials, tolerances and surface finishes can be customized to meet specific application requirements.

Custom Requirement	Available Options
Part Design	Customer 2D drawings, 3D CAD files, samples or technical specifications
CNC Processes	CNC Turning, CNC Milling, 5-Axis Machining, Turn-Mill Machining
Materials	Aluminum, Stainless Steel, Carbon Steel, Alloy Steel, Brass, Copper, Titanium
Dimensions	Custom dimensions according to drawings and part requirements
Tolerances	Standard and tight tolerances according to drawing and functional requirements
Threads & Holes	Metric, UNC, UNF and other specified thread and hole requirements
Surface Finishes	Anodizing, Hard Anodizing, Bead Blasting, Polishing, Brushing, Passivation, Plating and more
Production Volume	Prototypes, Small Batch, Low-Volume Production and Production Runs
Assembly	Component assembly available when required
Inspection	Dimensional inspection, CMM inspection and other inspection methods according to requirements
Documentation	Inspection Reports, MTC, COC and other quality documents as required

 

 

Packaging Item	Packaging Method / Details
Part Cleaning	Remove machining chips, oil and contaminants before packaging
Individual Protection	Plastic bags, protective film, foam or other suitable materials
Surface Protection	Rust prevention or protective coating for parts requiring corrosion protection
Small Parts	Compartment trays, bags or cartons to prevent mixing and damage
Precision Parts	Individual wrapping with foam or protective materials to prevent scratches and impact
Bulk Parts	Cartons with suitable internal protection based on part size and quantity
Heavy / Large Parts	Reinforced cartons, pallets or export wooden cases
Surface-Finished Parts	Additional protective packaging to prevent scratches, dents and surface damage
Labeling	Part number, quantity, PO number and other customer-specified information
Palletizing	Pallets used for larger quantities or consolidated shipments
Export Packaging	Suitable export packaging according to destination and transportation requirements
Shipping Documents	Commercial invoice, packing list and other required shipping documents
Quality Documents	MTC, inspection reports, COC and other documents supplied according to order requirements

 

Shipping Options

Shipping Method	Typical Use
Express / Courier	Prototypes, samples and small urgent orders
Air Freight	Time-sensitive production orders
Sea Freight	Larger or heavier production shipments
Customer's Freight Account	Shipment using the customer's nominated carrier or forwarder

 

Lead time and shipping costs are calculated from the actual production requirements of each CNC machined part. The following ranges can be used as a reference for standard orders. Final lead time and freight cost are confirmed before order placement.

 

Production Lead Time

Order Type	Typical Quantity	Production Lead Time	Notes
Prototype / Sample	1–10 pcs	5–10 business days	Standard materials and machining processes
Small Batch	10–100 pcs	7–15 business days	Depending on part complexity and material availability
Medium Batch	100–1,000 pcs	10–20 business days	Includes machining and standard inspection
Production Order	1,000+ pcs	15–30+ business days	Production schedule confirmed according to quantity and process
Surface Finishing	—	+2–7 business days	Depends on anodizing, plating, polishing and other finishing requirements
Special Materials	—	+3–10 business days	May require additional material sourcing time
Complex / 5-Axis Parts	—	Case by case	Depends on geometry, programming and inspection requirements

Important

Lead time starts after drawing approval, material confirmation and order confirmation. Actual production time may vary depending on material availability, part complexity, quantity, surface finishing and inspection requirements.

 

Shipping Cost Calculation

Shipping Factor	Calculation / Example
Actual Weight	Net weight of finished CNC parts + packaging weight
Package Dimensions	Length × Width × Height of the packed shipment
Volumetric Weight	Calculated according to the carrier's dimensional-weight formula
Billable Weight	Usually based on the higher of actual weight or volumetric weight
Shipping Method	Express / Air Freight / Sea Freight
Destination	Country, city and ZIP/postal code
Number of Packages	Total cartons, pallets or wooden cases
Packaging Type	Carton / Pallet / Wooden Case
Delivery Terms	EXW / FOB / CIF / DAP and other agreed terms

 

Send us your drawing, material, quantity and delivery destination. We will calculate the production lead time and shipping cost for your order.

 

1. What CNC machining services do you offer?

We provide CNC turning, CNC milling, 5-axis CNC machining and CNC turn-mill machining for custom metal parts. Machining processes are selected according to part geometry, tolerances, material and production requirements.

 

2. What materials can you CNC machine?

We machine aluminum, stainless steel, carbon steel, alloy steel, brass, copper and titanium, including common grades such as Aluminum 6061/7075, Stainless Steel 304/316, Brass C36000, Copper C11000/C12200 and Titanium Grade 2/Grade 5.

 

3. Can you manufacture CNC parts according to my drawings?

Yes. We manufacture custom CNC machined parts based on 2D drawings, 3D CAD files, samples or technical specifications. Drawings can include dimensions, tolerances, GD&T, materials, threads and surface finish requirements.

 

4. What file formats do you accept?

We commonly accept PDF, DWG, DXF, STEP, STP, IGES and X_T files. A 2D drawing with dimensions and tolerances is recommended for accurate quotation and inspection.

 

5. What CNC machining tolerances can you achieve?

Typical machining tolerance depends on part size, material, geometry and machining process. Standard and tight tolerances can be produced according to customer drawings. Critical dimensions should be clearly identified on the drawing.

 

6. Can you manufacture parts with tight tolerances and GD&T?

Yes. We can manufacture and inspect parts with requirements for flatness, parallelism, perpendicularity, concentricity, position, runout and other GD&T characteristics, subject to part geometry and machining capability.

 

7. What surface finishes are available for CNC machined parts?

Available finishes include as machined, anodizing, hard anodizing, bead blasting, polishing, brushing, passivation, black oxide, zinc plating, nickel plating and powder coating. Finish availability depends on the material and application.

 

8. Do you provide prototypes and small-batch CNC machining?

Yes. We support prototype, sample, small-batch, low-volume and production CNC machining. Quantity requirements can be discussed according to the part and production process.

 

9. Can you handle high-volume CNC production?

Yes. Production orders can be arranged according to part complexity, quantity, material availability, machining process and required delivery schedule. Production planning is confirmed after drawing and order review.

 

10. How do you inspect CNC machined parts?

Inspection can include dimensional inspection, thread inspection, surface inspection, GD&T inspection and CMM measurement depending on the part requirements. Inspection methods are selected according to the customer drawing and critical dimensions.

 

11. Can you provide inspection reports and material certificates?

Yes. Depending on order requirements, we can provide dimensional inspection reports, Material Test Certificates (MTC), Certificates of Conformity (COC) and other agreed quality documentation.

 

12. How long does CNC machining take?

Lead time depends on part complexity, material, quantity, machining process, surface finishing and inspection requirements. Prototype and small-batch orders generally have shorter production cycles, while larger production orders require additional manufacturing time.

 

13. Can you provide surface finishing and packaging?

Yes. Surface finishing and packaging can be arranged according to the part requirements. Finished parts can be individually protected, packed in cartons, palletized or placed in export wooden cases when required.

 

14. How is the shipping cost calculated?

Shipping cost is calculated based on actual or volumetric weight, package dimensions, number of packages, shipping method and delivery destination. Express, air freight and sea freight options can be quoted according to the order.

 

15. What information do I need to request a CNC machining quote?

For an accurate quotation, please provide:

Part drawing or CAD file + Material + Quantity + Surface Finish + Inspection Requirements + Delivery Destination

The more complete the technical information, the more accurately we can calculate machining cost, lead time and shipping cost.

 

16. Can you manufacture custom OEM CNC parts?

Yes. We provide OEM CNC machining according to customer drawings and specifications, including custom dimensions, materials, tolerances, surface finishes, inspection requirements and packaging.

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We're professional cnc machined parts manufacturers and suppliers in China, specialized in providing high quality customized titanium products. We warmly welcome you to buy discount cnc machined parts for sale here from our factory. For price consultation, contact us.