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Alloy brass CNC machining is a professional precision fabrication method tailored for alloy brass’s unique wear resistance, ductility and anti-oxidation properties. Optimized cooling cutting parameters and wear-resistant tooling enable one-setup production of intricate parts ranging from gear valve cores to hydraulic quick connectors with varied deep-hole and multi-angle geometries. By controlling thermal expansion and minimizing repeated clamping, this process delivers tight dimensional accuracy and premium surface finish for fluid control equipment, new energy electronics, automotive fittings and communication hardware manufacturing sectors.
Free-cutting brass CNC machining is our professional precision custom service focused on C36000, HPb59 free-machining brass materials. Our factory owns complete Swiss precision lathes and multi-axis machining centers, specializing in mass production of miniature brass pins, threaded fittings and conductive hardware. Certified ISO 9001:2015, our brass machined parts feature easy cutting, low burr, excellent electrical conductivity and long-term anti-corrosion performance.
Our automatic CNC production line converts your design files into finished brass components efficiently, solving the processing difficulty of tiny threads and micro thin-wall brass parts. We deliver full-cycle custom brass solutions: material matching, DFM optimization, high-speed CNC cutting, anti-tarnish surface treatment and full dimensional inspection for all custom brass hardware.
• High-Speed Precision Machining: Standard tolerance ±0.02mm, micro parts tolerance up to ±0.003mm, suitable for high-volume electronic terminal mass production.
• Micro Miniature Component Processing: Swiss lathes support ultra-small diameter brass pins, micro threads and thin-wall sleeves without tool breakage or deformation.
• Stable Free-Cutting Brass Raw Materials: C36000, HPb59 brass in stock, each batch with complete MTR test report to guarantee cutting performance and conductivity.
• High Mass Production Efficiency: Standardized fixture and automatic feeding system greatly shorten production cycle, ensure consistent size for thousands of brass parts.
• Full One-Stop Processing Service: Free drawing optimization, rapid sample making, multi-type plating, salt spray testing and full inspection to reduce your secondary processing steps.
• Flexible Order Support: Accept 1pc prototype and 100,000+ mass orders without MOQ, fast sample delivery within 48 hours.
| Item | chnical Parameters |
| Machining Types | Swiss CNC Turning, 3/4-axis Milling, Mill-Turn Integration, Micro Drilling, Fine Tapping, Thread Rolling |
| Tolerance Range | Standard: +0.02mm; Micro Precision: +0.005mm; Ultra-Micro: +0.003mm |
| Surface Roughness | Ra 0.2um - Ra 6.3um (High-gloss mirror polishing, matte sandblasting optional) |
| Applicable Materials | C36000 Free Cutting Brass, HPb59 Lead Brass, H62 Brass, C26000 Yellow Brass |
| Max Processing Size | Milling: 1000600500mm; Swiss Turning: Diameter 0.5-200mm, Length <400mm |
| Acceptable Design Files | CAD, STEP, IGS, STL, DWG, DXF, PDF |
| Surface Finishing | Tin Plating, Nickel Plating, Gold Plating, Passivation, Anti-Tarnish Coating, Mirror Polishing |
| Quality Certification | ISO 9001:2015, CMM Inspection, Salt Spray Test Report, MTR Material Certificate |
| MOQ & Lead Time | Zero MOQ; Sample: 1-3 days; Mass Batch: 4-12 days (Based on part complexity & quantity) |
Every production step is strictly controlled to guarantee low burr, high conductivity and anti-discoloration performance of free-cutting brass finished parts.
1. Drawing Review & DFM Optimization: Professional engineers analyze micro thread, thin-wall and tolerance requirements, provide free optimization to lower processing cost and reduce defect rate.
2. Brass Rod Cutting & Blanking: Select qualified free-cutting brass bars, conduct composition inspection and cut into uniform blanks for automatic feeding.
3. CAM Programming & Virtual Simulation: Programmers design high-speed cutting parameters and run full simulation to avoid tool collision and thread error.
4. High-Speed Brass CNC Machining: Swiss precision lathes and multi-axis equipment finish high-speed turning and milling, reduce burr generation of free-cutting brass.
5. Fine Deburring & Edge Smoothing: Ultrasonic cleaning and manual fine deburring remove micro burrs to ensure smooth contact surface for electronic terminals.
6. Electroplating & Anti-Tarnish Surface Treatment: Tin/nickel/gold plating and passivation treatment improve conductivity, wear resistance and anti-tarnish ability.
7. Full Dimensional & Salt Spray Inspection: Test dimensions via CMM, conduct salt spray aging test for plating layer, issue complete inspection reports.
8. Anti-Oxidation Packaging & Shipment: Anti-tarnish oil + vacuum plastic packaging, pre-delivery recheck, support global sea freight, air freight and express delivery.
Our free-cutting brass CNC micro fittings are widely supplied to high-precision electronic and automotive global manufacturers:
• Consumer & New Energy Electronics: Battery terminals, connector pins, charging brass contacts, PCB conductive posts
• Automotive Wiring System: Car sensor brass terminals, wiring harness connectors, valve micro fittings
• Medical Instrument Auxiliary Parts: Low-lead brass connecting fittings, miniature conductive bushings
• Sensor & Control Equipment: Flow sensor brass housings, signal transmission contact components
• Household Sanitary Hardware: Small brass valve cores, miniature threaded connecting fittings
1. Can you process tiny micro brass pins less than 1mm diameter?
Yes, our Swiss CNC lathes support machining brass parts with minimum diameter 0.5mm, meeting micro precision electronic requirements.
2. Can you provide salt spray test reports for plated brass parts?
We can provide 24h/48h/72h salt spray test reports according to customer requirements to verify plating anti-corrosion performance.
3. Is free-cutting brass easier to machine than ordinary brass?
C36000/HPb59 free-cutting brass contains lead components, with excellent chip breaking performance, less burr and higher mass production efficiency.
4. What’s your delivery cycle for mass brass terminals?
Small mass batches 4–7 days, large mass orders 7–12 days, rush mass production can be arranged.
5. Do you accept sample orders before mass production?
We support 1–10pcs prototype samples for customer testing, samples can be delivered within 1–3 working days.
Upload your 3D drawings, brass material grade and plating requirements now. Our sales and engineering team will send you a competitive factory quotation and free DFM optimization report within 24 hours. We provide stable high-conductivity free-cutting brass CNC machined parts with efficient mass production and on-time delivery to support your global business.
To empower innovators by delivering machined components of exceptional precision and quality, enabling our partners to build superior products and advance their industries.
South Wangjiazhuang Village,Daxin Town,Jimo,Qingdao,Shandong,China,266229
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