Brass CNC Machined Parts

Brass CNC machined parts are precision components manufactured from brass alloys using CNC turning, milling, 5-axis machining, and turn-mill processes. Brass is widely selected for CNC machining because of its excellent machinability, good corrosion resistance, low friction, and attractive surface appearance.

 

We machine brass parts including fittings, bushings, connectors, valve components, pins, shafts, inserts, and custom precision components for plumbing, electrical, automotive, industrial, and automation applications. Common grades include C36000, C26000, C26800, C27000, and C28000.

 

Key Benefits of Brass CNC Machining:

Excellent machinability for efficient precision machining

Good corrosion and wear resistance

Low friction for moving and mating components

Good electrical and thermal conductivity

Suitable for complex, threaded, and small precision parts

 

We provide custom brass CNC turning, CNC milling, 5-axis machining, and turn-mill machining for prototypes, small batches, and production runs. Our capabilities cover complex geometries, precision holes, threads, grooves, pockets, and multi-face features.

Capability	Typical Specification
CNC Turning	Ø2–300 mm
CNC Milling	Up to 800 × 500 × 500 mm
5-Axis Machining	Complex multi-face and angled features
Turn-Mill Machining	Turning and milling in one setup
Machining Tolerance	±0.01 mm
Precision Tolerance	Up to ±0.005 mm
Surface Roughness	Ra 0.8–3.2 μm
Thread Machining	Metric, UNC, UNF, BSP
Production Volume	Prototypes to mass production

Actual capabilities depend on part geometry, dimensions, brass grade, and machining requirements.

 

Need Custom Brass CNC Parts? Send us your 2D drawing or 3D CAD file. We'll review the machining requirements and provide a quotation.

 

Brass grades behave differently during CNC machining. Lead-containing free-machining brass such as C36000 provides excellent chip breaking and high cutting efficiency, making it a preferred choice for precision turned parts. Lead-free or lower-lead grades offer different combinations of strength, ductility, corrosion resistance, and regulatory suitability. Grade selection should therefore consider both machinability and the functional requirements of the finished part.

Brass Grade	Machinability	Key Properties	Best Suited For
C36000	Excellent	Excellent chip control, high cutting efficiency, good strength	Precision fittings, valve parts, bushings, connectors, threaded components
C26000	Good	High ductility, good corrosion resistance, good forming capability	Bushings, terminals, electrical components, formed & machined parts
C26800	Good	Good machinability, ductility and corrosion resistance	Connectors, hardware, fittings, general precision components
C27000	Good	Balanced strength, ductility and machinability	Pins, spacers, bushings, general CNC components
C28000	Good	Higher strength, good corrosion resistance	Fittings, valve components, industrial hardware

 

How to choose:
For high-volume precision turning and complex threaded parts, C36000 is often the first choice because of its superior machinability. For parts requiring more ductility or forming, C26000 and C26800 can be more suitable. Where higher strength is needed, C28000 may be preferred.

 

Not sure which brass grade to use? Send us your drawing, application, and required performance, and we can help select the appropriate material.

 

CNC Machining Process	Typical Parts	Key Features	Suitable Materials
CNC Turning	Shafts, Pins, Bushings, Sleeves, Fittings	OD/ID turning, threading, grooves, tapers	Aluminum, Brass, Stainless Steel, Steel, Copper, Titanium
CNC Milling	Plates, Blocks, Brackets, Housings, Manifolds	Pockets, slots, holes, contours, threads	Aluminum, Brass, Stainless Steel, Steel, Copper, Titanium
5-Axis CNC Machining	Complex Housings, Impellers, Blades, Manifolds	Multi-face machining, angled holes, complex surfaces	Aluminum, Stainless Steel, Steel, Titanium, Brass
Swiss CNC Machining	Small Shafts, Pins, Connectors, Bushings, Inserts	Small diameters, long slender parts, high-volume precision machining	Brass, Stainless Steel, Aluminum, Steel, Copper
CNC Turn-Mill Machining	Complex Shafts, Fittings, Connectors, Valve Components	Turning + milling, drilling, threading, multiple features in one setup	Aluminum, Brass, Stainless Steel, Steel, Titanium
CNC Grinding	Precision Shafts, Pins, Bushings, Bearing Components	Tight tolerances, fine surface finish, precision OD/ID grinding	Hardened Steel, Stainless Steel, Tool Steel, Carbide

 

Brass is highly machinable and can maintain tight dimensional accuracy when the machining process, tooling, and inspection method are properly controlled. Our CNC machining capability supports standard production tolerances as well as tighter tolerances for critical brass components.

Specification	Typical Capability
Linear Tolerance	±0.01 mm
Tight Dimensional Tolerance	±0.005 mm
Hole Diameter Tolerance	±0.01 mm
Shaft Diameter Tolerance	±0.01 mm
Flatness	0.01–0.03 mm
Concentricity	≤0.02 mm
Perpendicularity	≤0.02 mm
Surface Roughness	Ra 0.8–3.2 μm
Internal / External Threads	Metric, UNC, UNF, BSP
Minimum Machined Feature	Approx. 0.5 mm
Production Volume	Prototype to mass production

 

Surface Finish	Typical Result	Suitable Brass Parts
As Machined	Natural brass appearance with visible machining marks	Shafts, bushings, fittings, internal components
Polishing	Smooth, bright, reflective surface	Connectors, decorative hardware, visible components
Brushing	Uniform directional satin texture	Housings, handles, decorative components
Bead Blasting	Fine, uniform matte texture	Housings, brackets, equipment components
Nickel Plating	Improved wear and corrosion resistance	Fittings, connectors, valve components
Chrome Plating	Hard, bright protective surface	Handles, fittings, exposed hardware
Gold Plating	Conductive and decorative finish	Electrical contacts, connectors, electronic components

 

Finish Selection:
For functional brass parts, as-machined or polished finishes are often sufficient. For visible components, polishing or brushing provides a more refined appearance, while nickel, chrome, or gold plating can be selected when additional surface performance is required.

 

Brass is often selected when machinability, corrosion resistance, low friction, and electrical conductivity need to be balanced. The right material depends on the part's function, operating environment, and required performance.

Property	Brass	Aluminum	Stainless Steel	Copper	Carbon Steel
Machinability	Excellent	Excellent	Moderate	Moderate	Good
Strength	Moderate–High	Moderate	High	Moderate	High
Corrosion Resistance	Good	Good	Excellent	Excellent	Low–Moderate
Electrical Conductivity	Good	Moderate	Low	Excellent	Low
Thermal Conductivity	Good	Excellent	Low	Excellent	Moderate
Friction / Wear	Good	Moderate	Good	Moderate	Good
Weight	High	Low	High	High	High
Surface Appearance	Excellent	Good	Excellent	Excellent	Moderate
Typical CNC Parts	Fittings, Bushings, Connectors, Valves	Housings, Brackets, Plates	Shafts, Housings, Machine Parts	Electrical Components, Busbars	Shafts, Gears, Structural Parts

 

When to Choose Brass

Choose Brass for fittings, bushings, connectors, valves, and threaded components requiring excellent machinability and good corrosion resistance.

Choose Aluminum when low weight and high machinability are priorities.

Choose Stainless Steel when high strength and corrosion resistance are more important.

Choose Copper when maximum electrical or thermal conductivity is required.

Choose Carbon Steel when high strength and cost efficiency are the primary considerations.

 

Need help selecting the right material? Send us your part drawing and application requirements for a material recommendation.

 

Brass CNC parts are inspected throughout machining and before shipment to verify material grade, dimensional accuracy, threads, surface quality, and critical features. Inspection requirements can be matched to the function and tolerance of each component.

Quality Control Item	Inspection Method	What We Check
Material Verification	Material certificate / PMI	Brass grade, chemical composition, material traceability
Dimensional Inspection	Micrometers, calipers, height gauges	OD, ID, length, thickness, critical dimensions
Precision Geometry	CMM / optical measuring equipment	Position, concentricity, flatness, perpendicularity
Hole Inspection	Pin gauges / bore gauges	Hole diameter, depth, position
Thread Inspection	Go/No-Go gauges, thread gauges	Internal & external thread size and fit
Surface Roughness	Roughness tester	Ra value and machining finish
Visual Inspection	Visual / magnified inspection	Burrs, scratches, dents, tool marks, surface defects
Final Inspection	Inspection report	Overall dimensional and appearance verification

 

 

 

Application	Typical Brass CNC Parts	Common Brass Grades
Plumbing & Fluid Control	Fittings, Adapters, Valve Bodies, Connectors	C36000, C37700, C28000
Electrical & Electronics	Terminals, Contacts, Connectors, Inserts	C36000, C26000, C26800
Automotive	Bushings, Valve Components, Connectors, Pins	C36000, C26000, C27400
Pneumatic & Hydraulic Equipment	Fittings, Manifolds, Valve Components, Adapters	C36000, C37700, C28000
Industrial Machinery	Bushings, Shafts, Spacers, Pins, Couplings	C36000, C27000, C28000
Automation & Robotics	Precision Pins, Bushings, Inserts, Connectors	C36000, C26000, C27400
Instrumentation	Precision Housings, Connectors, Fittings, Shafts	C36000, C26000, C27000
Marine Equipment	Fittings, Bushings, Connectors, Valve Components	C46400, C48500, C28000

 

Why Brass for These Applications?
Brass combines high machinability with good corrosion resistance and low friction, making it particularly suitable for threaded fittings, fluid-control components, bushings, connectors, and other precision parts that require reliable machining and long-term service.

 

Packaging

Individual Protection - Poly bags, PE film, or protective sleeves for individual parts

Surface Protection - Foam, paper, or protective film for polished and plated surfaces

Inner Packaging - Plastic trays, foam inserts, or compartment packaging for small precision parts

Carton Packaging - Strong export cartons for standard production orders

Pallet Packaging - Reinforced pallets for larger or heavier shipments

Custom Packaging - Packaging designed around part geometry and customer requirements

 

Typical Lead Time

Order Type	Typical Lead Time
Prototype / Sample Parts	5–10 working days
Small Batch Production	7–15 working days
Medium Production Orders	10–20 working days
Large Production Orders	15–30 working days
Custom Surface Finishing	Add 3–7 working days

 

Need a delivery estimate for your brass CNC parts? Send your CAD drawing and quantity to get a project-specific lead time and quotation. 

 

1. What brass grades can you CNC machine?
We commonly machine C36000, C26000, C26800, C27000, C27400, C28000, C35300, and C37700 brass. Other grades can be considered based on your part requirements.

 

2. What brass grade is best for CNC machining?
C36000 is one of the most machinable brass grades and is well suited for precision turned parts, fittings, bushings, connectors, and threaded components. Other grades may be better when strength, ductility, or corrosion resistance is more important.

 

3. What types of brass CNC parts can you manufacture?
We manufacture fittings, bushings, connectors, valve components, pins, inserts, spacers, manifolds, shafts, and custom OEM components.

 

4. Can you CNC turn and mill brass parts?
Yes. We provide CNC turning, CNC milling, 5-axis CNC machining, and turn-mill machining for brass components with simple or complex geometries.

 

5. What tolerance can you achieve on brass CNC parts?
Typical machining tolerance is around ±0.01 mm, with tighter tolerances down to approximately ±0.005 mm possible for suitable features and part geometries.

 

6. What surface finishes are available for brass CNC parts?
Options include as-machined, polishing, brushing, bead blasting, nickel plating, chrome plating, and gold plating, depending on the required appearance and performance.

 

7. Can you manufacture brass parts with threads?
Yes. We can machine internal and external threads, including Metric, UNC, UNF, and BSP threads, with thread inspection using appropriate gauges.

 

8. What information is required for a brass CNC machining quote?
Please provide your 2D drawing or 3D CAD file, brass grade, quantity, tolerances, surface finish, and required delivery date. Application and inspection requirements are also helpful.

 

9. Can you provide material certificates and inspection reports?
Yes. Material certificates, dimensional inspection reports, and other quality documentation can be provided according to project requirements.

 

10. What is the typical lead time for brass CNC machined parts?
Prototype and sample orders typically take 5–10 working days, while production orders generally take 7–30 working days, depending on quantity, complexity, finishing, and inspection requirements.

 

11. What is the minimum order quantity for brass CNC parts?
We can support prototype, low-volume, and production orders. The minimum quantity depends on the part and production requirements.

 

12. How do I get a quote for custom brass CNC machined parts?
Upload your CAD drawing or 3D model with the required brass grade and quantity. Our team can review the part and provide a quotation based on the machining requirements.

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