Brass & Copper Parts is a leading manufacturer and exporter of copper screw machine parts, supplying precision-engineered components to industries across the USA, Canada, and worldwide. With decades of experience in automatic screw machine production, we deliver copper machined parts that meet the most demanding dimensional and surface finish requirements.
What Are Copper Screw Machine Parts?
Copper screw machine parts are high-precision components manufactured using automatic or CNC screw machines (also called Swiss-type or multi-spindle machines) that rapidly produce turned parts from copper bar stock. These machines are ideal for producing large volumes of small, complex parts with tight tolerances — making them indispensable for the electrical, electronics, plumbing, and automotive industries.
Copper’s outstanding electrical conductivity (second only to silver), excellent thermal conductivity, superior corrosion resistance, and ease of machinability make it the material of choice for critical electrical and mechanical components.
Our Range of Copper Screw Machine Parts
We manufacture a comprehensive range of copper screw machined components tailored to your exact specifications:
Copper Turned Parts & Precision Turned Components
CNC-turned copper parts with tight dimensional tolerances, smooth surface finishes, and complex geometries. Ideal for connectors, terminals, and precision assemblies requiring consistent quality at high volumes.
Copper Threaded Fasteners & Screws
Custom copper screws, bolts, and threaded fasteners machined to ASME/ANSI thread standards. Available in UNC, UNF, metric, and special thread forms for grounding, electrical, and assembly applications.
Copper Bushings & Sleeves
Precision-bored copper bushings and sleeve bearings for low-friction, high-conductivity applications. Popular in electrical switchgear, transformers, and hydraulic systems.
Copper Standoffs & Spacers
Hex, round, and custom copper standoffs and spacers for PCB assemblies, electrical panels, and enclosures. Excellent for grounding and EMI shielding applications.
Copper Electrical Contacts & Terminals
High-conductivity copper contacts, pin terminals, and socket inserts for relays, switches, connectors, and bus bar assemblies. Manufactured to IEC and NEMA standards.
Copper Ferrules & Inserts
Custom copper ferrules, compression inserts, and wire termination components for cable assemblies, lugs, and crimp connections used in power distribution and automotive wiring.
Copper Fittings & Adapters
Precision-machined copper fittings, nipples, and adapters for plumbing, HVAC, refrigeration, and pneumatic systems — produced to ASTM B306, B88, and related specifications.
Copper Pins & Dowel Pins
Solid copper pins for grounding, current transfer, alignment, and die casting ejector applications where high conductivity or thermal performance is required.
Copper Material Grades & International Equivalents
We work with all commercially pure and specialty copper grades. The table below lists the most commonly used grades and their international equivalents:
| Grade / Alloy | UNS (USA) | BS (UK) | DIN (Germany) | JIS (Japan) | Key Property |
|---|---|---|---|---|---|
| Electrolytic Tough Pitch (ETP) Copper | C11000 | C101 | E-Cu 58 (2.0065) | C1100 | Highest conductivity (>100% IACS) |
| Oxygen-Free Copper (OFC) | C10100 / C10200 | C103 | OF-Cu (2.0076) | C1020 | Hydrogen embrittlement resistant |
| Phosphorus Deoxidized Copper | C12200 | C106 | SW-Cu (2.0090) | C1220 | Excellent for welding & brazing |
| Free-Machining Copper (Tellurium) | C14500 | C109 | CuTeP (2.1546) | C1450 | Best machinability of all coppers |
| Zirconium Copper | C15000 | — | CuZr (2.1247) | — | High strength + high conductivity |
| Beryllium Copper (High Strength) | C17200 | CB101 | CuBe2 (2.1247) | C1720 | Spring temper, fatigue resistance |
Why Choose Tellurium Copper (C14500) for Screw Machine Parts?
Tellurium copper (C14500 / UNS C14500) is the preferred alloy for automatic screw machine production. Its free-machining characteristics result in shorter cycle times, excellent chip breakage, superior surface finish, and longer tool life — all while retaining approximately 93–95% of the electrical conductivity of pure copper. This makes it the go-to material for high-volume copper turned parts in the USA.
Industries We Serve Across the USA
- Electrical & Electronics: Connectors, contacts, terminals, bus bars, switch components
- Telecommunications: RF connectors, coaxial components, grounding hardware
- Automotive: Battery terminals, starter components, sensor housings
- Plumbing & HVAC: Fittings, valves, adapters, compression ferrules
- Medical Devices: Precision copper parts for diagnostic equipment, surgical tools
- Aerospace & Defense: High-reliability copper connectors and bus components
- Renewable Energy: Solar inverter connections, wind turbine grounding components
Why Brass & Copper Parts for Your Copper Screw Machine Parts?
- Decades of Screw Machining Expertise: Specialized in automatic and CNC screw machine production for over 25 years, with deep knowledge of copper alloy behavior.
- Tight Tolerances: Capable of holding tolerances as tight as ±0.001″ (±0.025 mm) on diameter and ±0.002″ on length for critical applications.
- High-Volume Capacity: Multi-spindle and CNC Swiss machines enabling production runs from 1,000 to 10+ million pieces.
- Full Material Certification: Mill test certificates, RoHS compliance documentation, and full material traceability on every order.
- Competitive Pricing for the US Market: Cost-effective manufacturing with short lead times and DDP (Delivered Duty Paid) shipping to USA locations.
- Custom Engineering Support: Free DFM (Design for Manufacturability) review, prototyping, and reverse engineering capabilities.
- Quality Assurance: ISO 9001:2015 certified facility with CMM inspection, optical comparators, and full dimensional reporting.
Frequently Asked Questions (FAQs) — Copper Screw Machine Parts
Q1: What is the difference between a screw machine part and a CNC turned part?
A: Screw machine parts are produced on automatic screw machines (cam-driven or CNC) designed for high-speed, high-volume production of small turned parts from bar stock. CNC turning centers are more flexible for prototyping and small batches. For large production volumes (10,000+ pieces), automatic screw machines offer the lowest piece price for copper components.
Q2: Which copper alloy is best for electrical connector parts?
A: For electrical connectors, C11000 (ETP copper) or C10200 (oxygen-free copper) offer the highest conductivity. For high-volume machined connectors, C14500 (tellurium copper) is preferred due to its superior machinability while still maintaining excellent conductivity (~93% IACS).
Q3: Can you supply copper screw machine parts to RoHS and REACH standards?
A: Yes. All our copper alloys are compliant with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. We provide full material compliance documentation with every shipment.
Q4: What is the minimum order quantity (MOQ) for copper screw machined parts?
A: Our standard MOQ is 500 pieces for prototype and sample orders, and 5,000 pieces for production runs. We can accommodate smaller quantities for development purposes — please contact us to discuss your requirements.
Q5: Do you offer secondary operations on copper screw machine parts?
A: Yes. We offer full secondary operations including drilling, milling, slotting, knurling, threading, tapping, tinning, silver plating, nickel plating, and passivation — all in-house for a complete, ready-to-assemble part.
Q6: What surface finishes are available for copper machined components?
A: Available finishes include as-machined, polished, electroless nickel, electrolytic nickel, tin plating, silver plating, gold plating, and chemical passivation. We work with certified plating partners for all surface treatment requirements.
Q7: How do I get a quote for custom copper screw machine parts?
A: Send us your part drawings (PDF, DXF, DWG, STEP, or IGES), required quantity, material specification, and any special requirements. We typically respond with a competitive quotation within 24–48 hours.
Certifications & Quality Standards
All copper screw machine parts from Brass & Copper Parts are manufactured under an ISO 9001:2015 certified quality management system. We follow ASTM B301 (free-cutting copper rod), ASTM B124, and relevant ASME/ANSI dimensional standards for threaded components. First Article Inspection (FAI), PPAP documentation, and Cpk studies are available on request.
Request a Quote for Copper Screw Machine Parts
Whether you need prototype quantities or multi-million-piece production runs, Brass & Copper Parts has the expertise, capacity, and quality systems to meet your copper screw machine parts requirements. Contact our USA-focused sales team today for a fast, competitive quotation and free DFM consultation.
