Brass Swiss Screw
Machined Parts for OEM Applications
CNCPioneer manufactures high-precision brass swiss screw machined parts on 78+ Swiss CNC lathes — from prototype to high-volume production, with tolerances as tight as ±0.005mm.
What Are Brass Swiss
Screw Machined Parts?
Brass swiss screw machined parts are precision components produced on Swiss-type automatic screw machines using brass bar stock. The term "screw machined" originates from the automatic screw machine — designed for continuous, automated production of small turned parts. Swiss-type screw machines combine high-output screw machining with Swiss-style guide bushing support.
The brass bar stock feeds through a guide bushing positioned immediately at the cutting zone, eliminating workpiece deflection. This enables long, slender brass parts with exceptional straightness, tight tolerances, and complex features — all completed in a single automated cycle.
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Guide-bushing support Brass bar held close to the cut — eliminates deflection on slender geometries.
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Tight tolerances ±0.005mm high-precision capability with CMM verification.
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Single-cycle multi-feature Threading, knurling, cross-drilling, milling — no re-fixturing needed.
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High-volume throughput Continuous automated cycles for millions of parts per year.
Why Choose Brass for
Swiss Screw Machining?
Brass is the benchmark material for screw machining. C3604/C36000 free-cutting brass holds a machinability rating of 100 — the reference point against which all other metals are measured. This delivers faster cycles, longer tool life, and lower per-part costs.
Unmatched machinability
C3604 brass machines at machinability index 100 — the highest of any metal — maximizing output and minimizing tool wear in continuous screw machine production.
Burr-free surface finish
Brass produces naturally smooth, clean surfaces in screw machining, eliminating secondary deburring operations in most applications and reducing total cost.
Corrosion resistance
Inherently resistant to atmospheric and fluid corrosion; further enhanced with nickel, tin, or chrome plating to meet specific environmental requirements.
Electrical conductivity
Essential for screw machined electrical contacts, terminals, and connector pins where conductivity is a core functional requirement of the part.
Dimensional consistency
Brass's low work-hardening rate ensures stable dimensions across millions of parts in continuous screw machine production runs without drift.
Thread quality
Brass threads cut cleanly and precisely, producing leak-free sealing surfaces critical for fluid control fittings and hydraulic connectors.
Brass Swiss Screw Machined Parts We Commonly Produce
Swiss screw machining is used wherever small, precise, high-volume brass components are required. Representative part types we manufacture include:
Electrical Connectors & Terminals
Crimp terminals, PCB pins, socket contacts, pogo pins, and battery contacts for cable assemblies, consumer electronics, and industrial controls.
Threaded Fittings & Adapters
Compression fittings, push-in connectors, hydraulic adapters, barbed fittings, and nipples for plumbing and fluid control applications.
Precision Fasteners & Inserts
Brass screws, standoffs, spacers, threaded inserts, and specialty fasteners for mechanical assemblies and PCB mounting.
Valve Bodies & Flow Control
Precision brass valve bodies, stems, seats, orifices, and flow control components for fluid systems and pressure regulation.
Medical & Instrument Components
Miniature brass fittings, cannula hubs, diagnostic instrument parts, and fluid delivery components requiring tight tolerances and clean finishing.
Decorative & Consumer Hardware
Watch components, camera hardware, luxury goods fittings, architectural fasteners, and decorative brass hardware for consumer-facing products.
Industries We Serve
Brass swiss screw machined parts are found in critical applications across electronics, plumbing, automotive, medical, and aerospace sectors. CNCPioneer's certified quality systems and high-volume capacity make us a trusted OEM supply partner.
Electronics & Electrical
Brass connectors, terminals, pogo pins, contact pins, and PCB inserts for cable assemblies and consumer electronics. We supply Canon, Kyocera, Amphenol, and ZTE supply chains.
Plumbing & Fluid Control
Brass valve bodies, compression fittings, nipples, adapters, and flow control components. Swiss screw machining ensures thread accuracy and leak-free sealing surfaces.
Automotive & New Energy
Sensor housings, fuel system fittings, EV charging terminals, and transmission components. IATF 16949:2016 certified production with full traceability and AQL inspection.
Medical Devices
Miniature brass screw machined components for diagnostic equipment, dental instruments, and fluid delivery systems. Cleanroom-compatible packaging available on request.
Aerospace
Brass fittings, standoffs, and electrical contact components for avionics and ground support equipment. Full AS9100D documentation, FAIR reports, and material certifications provided.
Consumer Products
Decorative brass hardware, watch components, camera parts, and precision fasteners for consumer-facing products. We supply components to RED Digital Cinema and Longchamp.
Brass Swiss Screw Machining
Capabilities at CNCPioneer
CNCPioneer operates a dedicated Swiss screw machining facility in Shenzhen, China, with purpose-built production lines optimized for brass precision components. Our capacity supports both prototype and multi-million-part annual production contracts.
78+ Swiss CNC Lathes
Star SR-32J, Citizen A20/A16, Tsugami B206, and Nomura machines with up to 9-axis simultaneous machining per cycle.
Diameter Range
Ø1mm to Ø32mm brass bar stock capacity, covering connector pins, fittings, valve bodies, and complex multi-feature parts.
Tolerance Capability
Standard ±0.01mm; high-precision ±0.005mm with Mitutoyo CMM verification. Roundness ±0.002mm, surface finish Ra 0.4μm.
Brass Alloys
C3604/C36000, C3602, C2680, C2600, C46400 Naval Brass, and CuZn37Mn3Al2PbSi — selected to match your application and compliance needs.
Single-Setup Operations
Turning, threading, knurling, cross-drilling, milling, and grooving completed in one uninterrupted cycle — no re-fixturing errors.
3-Day Prototype Delivery
In-stock C3604 and C3602 bar stock supports 3-day prototype delivery. Standard production volumes: 2–4 weeks.
Brass Grades for Swiss Screw Machined Parts
CNCPioneer works with a comprehensive range of brass alloys, selected based on your application's mechanical requirements, machinability rating, compliance needs, and end-use environment. All bar stock undergoes XRF verification before entering production.
C3604 (JIS) / C36000
Machinability index 100 · Industry benchmark for Swiss screw machining · Connectors, terminals, fittings, fasteners
C3602 (JIS)
High machinability · Good mechanical strength · Valve bodies, hydraulic adapters, bushings
C2680
Good machinability · High ductility · RoHS-compliant · Electronic pins, rivets, connectors
C2600
High ductility · Excellent cold-forming properties · Deep-drawn housings, cartridge components
C46400 (Naval Brass)
Outstanding seawater corrosion resistance · Marine fittings, offshore valve components
CuZn37Mn3Al2PbSi
High-strength naval brass · Wear-resistant · Heavy-duty valve seats, fluid control
C11000 Copper
High electrical & thermal conductivity · Used in contacts, busbars, and high-conductivity connectors
Beryllium Copper
High strength + high conductivity · Springs, contacts, connectors requiring fatigue resistance
Surface Finishing Options for
Brass Swiss Screw Machined Parts
Brass swiss screw machined parts are frequently finished to enhance corrosion resistance, electrical performance, solderability, or aesthetic appearance. We provide a full range of finishing options through in-house capabilities and verified finishing partners.
Nickel Plating
Excellent corrosion and wear resistance. Widely used for brass connectors, terminals, and valve components requiring durable surface protection.
Tin Plating
Superior solderability for PCB connectors, crimp terminals, and electronic contacts. The most common finish for brass electronic components. RoHS compliant.
Gold Plating
Ultra-low contact resistance for high-reliability brass electrical connectors and precision contacts. Specified for aerospace and mission-critical connector applications.
Electroless Nickel Plating
Uniform coating on complex geometries including internal bores and threaded features. Ideal for brass valve bodies, fittings, and parts requiring consistent coverage.
Chrome Plating & Lacquering
Decorative chrome finish for consumer-facing brass hardware. Lacquering prevents tarnishing for architectural components and decorative fittings.
Passivation & Bead Blasting
Passivation for brass parts in high-purity fluid and gas systems. Bead blasting creates a uniform matte texture for decorative and consumer-facing brass components.
Surface finish requirements often affect part performance as much as machining quality. Our team reviews finishing specifications together with brass alloy selection, tolerance, and geometry at the quoting stage to ensure the best outcome for your application.
From Drawing Review to Finished Brass Parts
Our workflow is designed to help OEM customers move from drawing to qualified brass swiss screw machined parts with fast turnaround and reliable engineering communication.
Drawing Review & DFM Assessment
Send your CAD file, 2D drawing, or physical sample. Our team reviews geometry, brass alloy selection, tolerances, and critical features — and provides a free DFM report within 24 hours.
Brass Alloy Selection & Quotation
We confirm the optimal brass grade for your application, provide a competitive quote, and suggest DFM improvements to reduce cost or improve manufacturability.
Sample or First Article Production
For new projects, we provide prototype parts or first articles — available in as little as 3 days for in-stock C3604/C3602 brass — for dimensional review before volume production.
Swiss Screw Machine Production
Parts are produced on 78+ Swiss CNC lathes with up to 9-axis simultaneous machining — threading, knurling, cross-drilling, and milling completed in a single automated cycle.
Finishing & Plating
Brass parts proceed to finishing — nickel plating, tin plating, gold plating, chrome, electroless nickel, passivation, or bead blasting — as specified for your application.
Inspection, Documentation & Shipment
Parts are inspected with Mitutoyo CMM, packed with surface-protective packaging, and shipped with material certificates, RoHS compliance certificates, and FAIR reports as required.
Quality Assurance for
Brass Swiss Screw Machined Parts
Every brass swiss screw machined part shipped from CNCPioneer undergoes a rigorous multi-stage quality control process designed to meet the most demanding industry standards — AS9100D, IATF 16949, and ISO 10012 certified.
Incoming Material Verification
SII X-ray fluorescence (XRF) analyzer confirms brass alloy composition and lead/cadmium content compliance. Hardness testing on every incoming batch.
- XRF brass alloy verification
- Lead & cadmium content check
- Hardness testing per batch
In-Process Inspection
CCD automatic sorting and real-time dimensional monitoring with Mitutoyo micrometers throughout production. First-article verification at the start of every production run.
- CCD automatic sorting
- First-article dimensional check
- Real-time batch monitoring
Final Inspection
Mitutoyo CMM (±0.001mm) for complex 3D geometries; 2.5D measuring systems for 2D features; profile projector for thread form and pitch; surface roughness testing.
- CMM & optical measurement
- Thread form & pitch verification
- Surface roughness testing
Documentation & Delivery
Parts ship with full documentation packages. 100% inspection for aerospace and medical; AQL sampling for high-volume automotive and electronics orders.
- Material & CMM certificates
- RoHS compliance certificates
- FAIR reports for aerospace
Brass Swiss Screw Machined Parts FAQ
Common questions from engineers and buyers about our brass swiss screw machining service.
Brass swiss screw machined parts are precision components produced on Swiss-type automatic screw machines using brass bar stock. The guide bushing supports the material immediately at the cutting zone, enabling tight tolerances, complex features, and high-volume output in a single automated cycle.
Swiss screw machining uses a guide bushing positioned immediately adjacent to the cutting tool, providing workpiece support at the point of cutting rather than only at the chuck. This eliminates deflection on small-diameter brass parts, enables tighter tolerances, better surface finishes, and higher length-to-diameter ratios than conventional CNC turning — all in a single uninterrupted multi-operation cycle.
C3604 (JIS) / C36000 free-cutting brass is the industry standard, rated at machinability index 100 — the highest of any metal. It machines cleanly, produces excellent surface finishes, and is available in precision-ground bar stock across a wide range of diameters. For RoHS or lead-free applications, we recommend C2680. For marine or high-corrosion environments, C46400 naval brass is preferred.
Our standard production tolerance is ±0.01mm. For precision-critical applications such as electrical contacts, medical fittings, or semiconductor connectors, we achieve ±0.005mm with full CMM verification using Mitutoyo equipment. Roundness tolerance of ±0.002mm is achievable on brass parts.
Prototype orders using in-stock C3604 or C3602 brass bar stock are available in 3 days. Standard production volumes typically complete in 2–4 weeks, depending on part complexity, order quantity, and finishing requirements.
Yes. We verify RoHS compliance using our SII XRF analyzer to measure lead, cadmium, and other restricted substances. For electronics applications requiring lead-free brass, we machine C2680 and other compliant alloys and provide full RoHS documentation with each order.
No. CNCPioneer accepts orders from single prototype pieces through to millions of parts annually. Our Swiss screw machine setup is equally optimized for prototype validation runs and long-run production contracts with no minimum order quantity for standard brass materials.
Yes. Our multi-axis Swiss lathes perform turning, threading, cross-drilling, milling, knurling, and grooving simultaneously in a single setup, eliminating re-fixturing errors, improving accuracy, and reducing lead time compared to conventional multi-operation turning.
Need a Reliable Supplier for Brass Swiss Screw Machined Parts?
Upload your CAD file and receive a free DFM review and competitive quote within 24 hours. CNCPioneer's engineering team will review your design for manufacturability, confirm the optimal brass alloy for your application, and verify achievable tolerances for your part geometry.