Brass Parts – Brass CNC Machined Parts

Brass Parts – Brass CNC Machined Parts

Brass CNC machined parts — also referred to as brass precision parts, brass turned-milled components, brass CNC components, or brass automatic screw machine parts — are high-accuracy metal components produced on computer-controlled turning centres, machining centres, and multi-spindle automatics from free-cutting brass rod and bar stock. Electrical Accessories India manufactures precision brass parts in CW614N (CuZn39Pb3), CW602N (CuZn36Pb2As), CW617N (CuZn40Pb2), IS 319 free-cutting brass, and other alloys to tight dimensional tolerances for electrical OEMs, instrumentation builders, EPC contractors, panel board manufacturers, and export distributors worldwide.

Product Overview

What Are Brass CNC Machined Parts?

Brass CNC machined parts are components produced using Computer Numerical Control turning, milling, drilling, threading, and grinding operations on brass billets, bars, or rods. The CNC process allows repeatable production of complex geometries — threaded inserts, hex bodies, knurled shanks, hollow bores, eccentric profiles — to tolerances of ±0.01 mm or better. Free-cutting brass grades (containing 1.5–3.5% lead or bismuth) provide excellent chip formation, surface finish, and tool life in high-volume CNC production. Applications span cable gland bodies, terminal pins, connector housings, panel board fittings, busbar connectors, grounding components, and instrumentation fittings.

Alloy Selection for CNC Brass Parts

The choice of brass alloy governs machinability, strength, and corrosion performance. CW614N (CuZn39Pb3) is the most widely used free-cutting brass in Europe and globally, offering machinability index of 100 and excellent corrosion resistance. CW617N (CuZn40Pb2) provides slightly higher zinc content for better forgeability combined with good machinability. IS 319 Type 1 (Indian standard free-cutting brass with ~3% lead) is the equivalent domestic grade. For dezincification-resistant applications — marine, gas, and water fittings — CW602N (CuZn36Pb2As) is used. Electrical Accessories India sources certified brass rod from primary Indian and European producers and maintains grade segregation throughout production.

Manufacturing Capabilities

Electrical Accessories India operates a range of CNC turning centres (single-spindle and twin-spindle), multi-spindle automatic lathes, VMCs (Vertical Machining Centres), and secondary operations including tapping, drilling, reaming, slotting, and surface finishing. Component sizes range from M3 to M64 thread diameters and from 2 mm to 150 mm OD. Batch sizes from prototype (1–10 pieces) to high-volume runs (1 million+ pieces/year) are accommodated. Secondary finishing — nickel plating, tin plating, passivation, annealing — can be applied as per customer specification.

Quality and Dimensional Control

Each brass CNC machined part undergoes in-process and final inspection using calibrated instruments: CMM (Coordinate Measuring Machine), digital micrometers, thread gauges, plug gauges, ring gauges, and surface roughness testers. Electrical Accessories India maintains ISO 9001 quality management systems with full traceability of raw material heat numbers to finished components. Material test reports (MTR), certificates of conformance, and RoHS compliance certificates are available on request. Dimensional tolerances are maintained to ISO 286 fit system (h6, h8, H7, etc.) as specified.

Surface Finish Options

Brass CNC machined parts can be supplied in natural (machined) finish, bright polished, barrel tumbled and polished, electroless nickel plated (ENP), bright nickel plated, tin plated (hot dip or electrolytic), chrome plated, or passivated. Plating thickness and adhesion testing is performed per ASTM B733, ASTM B545, or customer specifications. Packaging in moisture-barrier polythene bags with desiccants is standard for export shipments.

Export and Global Supply

Electrical Accessories India exports brass CNC machined parts to the United Kingdom, Germany, USA, UAE, Australia, South Africa, Singapore, Malaysia, Netherlands, Poland, and Brazil. Export documentation includes commercial invoice, packing list, certificate of origin (COO), material test reports, and conformance certificates. HS code for brass machined parts: 7415.39 (screws, bolts, nuts, and similar), 7419.80 (other articles of copper/brass). Lead times for standard production runs: 3–6 weeks. Sample lead time: 1–2 weeks.

Key Features

• Alloys: CW614N (CuZn39Pb3), CW617N (CuZn40Pb2), CW602N (CuZn36Pb2As), IS 319 — grade selection per application
• Tolerances to ±0.01 mm on critical dimensions; threads to 6g/6H tolerance class
• CNC turning centres and multi-spindle automatics for volumes from 100 to 1,000,000+ pieces
• Secondary operations: tapping, drilling, milling, knurling, slotting, deburring
• Surface finishing: natural brass, nickel plated, tin plated, chrome plated, passivated
• Full material traceability: heat numbers linked to finished component batch records
• CMM inspection, thread gauging, and surface finish measurement on every batch
• ISO 9001 certified QMS; RoHS and REACH compliant alloys available
• Component sizes: M3 to M64 threads; 2 mm to 150 mm OD
• Export-ready packaging with moisture barriers and desiccants

Material Grades and International Equivalents

Technical Specifications

Product Types and Variants

Brass CNC machined parts from Electrical Accessories India cover a broad range of component types: Threaded inserts and brass nuts (hex, square, round) in M3–M64; Brass terminal pins and contact pins for electrical connectors; Cable gland bodies and locknuts machined from brass rod; Busbar connectors and copper-brass connectors with precision bored holes; Panel board fittings including brass studs, standoffs, and spacers; Instrumentation fittings — compression fittings, adapters, unions; Brass hollow bolts, banjo bolts for hydraulic and pneumatic applications; Custom profiles machined to customer drawings in any quantity.

Applications in Industry

Brass CNC machined parts are used across diverse industrial sectors. In the electrical industry, brass components form the bodies of cable glands, terminals, connectors, busbar fittings, and panel board fittings. In instrumentation and process control, precision brass parts are used in flow meters, pressure gauges, solenoid valve bodies, and actuator fittings. In the automotive sector, brass machined parts serve as fuel system fittings, pneumatic connectors, and sensor housings. Plumbing and HVAC applications include compression fittings, valve bodies, and water meter parts. Telecommunications uses brass for antenna connectors, coaxial connectors, and RF components. Defence and aerospace use brass parts for non-magnetic applications and where low-spark properties are required.

Manufacturing Process

1. Raw Material Receipt and Inspection: Certified brass rod/bar received; heat number verified against MTR; OD and straightness checked.
2. CNC Programming: CAD/CAM software generates tool paths from 2D drawing or 3D model; simulation run before production.
3. Bar Loading: Brass rod loaded into magazine or barfeed system on CNC lathe or Swiss-type machine.
4. CNC Turning: OD turning, facing, boring, grooving, threading, and parting operations performed in single or multiple setups.
5. Milling/Drilling: Cross-holes, flats, slots added on live-tool lathes or VMC as required.
6. Deburring: Manual or vibratory deburring; edges chamfered as specified.
7. In-Process Inspection: Dimensional check after first-off and periodically during run; thread gauging on 100% of threaded parts.
8. Surface Finishing: Polishing, plating, or passivation as specified.
9. Final Inspection: CMM measurement of critical dimensions; visual inspection; surface roughness measurement.
10. Packaging and Dispatch: Components packed per customer specification; export documentation prepared.

Quality Standards and Certifications

Electrical Accessories India manufactures brass CNC machined parts in compliance with: ISO 9001:2015 Quality Management System; EN 12164 / EN 12165 / EN 12420 for wrought copper alloy rod, bar, and forgings; ASTM B16 / ASTM B453 for free-cutting brass rod and shapes; IS 319 for free-cutting brass rod and bars; RoHS Directive 2011/65/EU (lead-free alloys available); REACH Regulation (EC) No. 1907/2006; dimensional standards ISO 286 (tolerances) and ISO 1302 (surface texture). Third-party inspection by SGS, Bureau Veritas, or TÜV available on request.

Why Choose Electrical Accessories India

Electrical Accessories India has manufactured precision brass components in Jamnagar, Gujarat — India’s brass machining capital — for over 30 years. Our technical strengths include: a dedicated CNC machining facility with multi-axis turning centres and VMCs; in-house metallurgical lab for alloy verification; full traceability from material receipt to final dispatch; experienced engineers for DFM (Design for Manufacturability) review; competitive pricing due to integrated brass supply chain in Jamnagar; ability to supply complete families of brass, copper, and bronze components from one source; and responsive sales and technical support. We export to 30+ countries and carry forward contracts for annual supply programmes with flexible call-off schedules.

Frequently Asked Questions (FAQ)

What is the difference between CW614N and IS 319 brass?

CW614N (CuZn39Pb3) is the European EN designation; IS 319 Type 1 is the Indian equivalent. Both are free-cutting brasses with approximately 3% lead content. CW614N is specified by European OEMs; IS 319 is the applicable standard for domestic Indian supply. Electrically and mechanically, the alloys are essentially equivalent.

Can you manufacture to customer drawings?

Yes. Electrical Accessories India works from 2D engineering drawings (PDF, DXF, DWG) or 3D CAD models (STEP, IGES, SolidWorks). We provide DFM feedback and first-article inspection reports before mass production.

What is the minimum order quantity (MOQ)?

MOQ depends on component complexity. For standard items, MOQ is typically 1,000 pieces. For complex CNC machined parts with multiple operations, MOQ may be 500 pieces. Prototype samples can be supplied in quantities of 10–50 pieces at sample pricing.

Do you offer lead-free brass options?

Yes. CW602N (CuZn36Pb2As) is a DZR (dezincification-resistant) brass with reduced lead suitable for water contact applications. Bismuth-brass and low-lead alloys compliant with EN 17885 are available for applications requiring RoHS lead compliance.

What plating options are available?

Standard options: bright nickel plating (3–8 µm), electroless nickel plating (5–25 µm), tin plating (hot dip or electrolytic, 5–15 µm), chrome plating, and passivation. Custom plating specifications per ASTM, MIL, or IEC standards can be accommodated through our plating partners.

What are your dimensional tolerances?

Standard CNC turning tolerances: ±0.05 mm on general dimensions, ±0.01 mm on precision dimensions, 6g/6H on threads. Tighter tolerances (±0.005 mm) achievable on ground components. All tolerances referenced to ISO 286 fit system.

How long does sample production take?

Prototype samples: 1–2 weeks from drawing approval. First article inspection report (FAIR) is provided with the samples. Production lead time after sample approval: 3–6 weeks depending on batch size and surface finish requirements.

Do you supply material test reports?

Yes. MTRs (Material Test Reports) showing chemical composition and mechanical properties per EN 10204 3.1 or 2.2 are supplied with every production batch. RoHS declarations and REACH SVHC declarations available on request.

What industries are your main customers?

Primary customer segments: electrical equipment manufacturers (cable glands, terminals, connectors), panel board and switchgear builders, instrumentation and process control OEMs, automotive tier-1 and tier-2 suppliers, plumbing and HVAC product manufacturers, and industrial fastener and hardware distributors.

Can you handle long-term supply contracts?

Yes. Electrical Accessories India welcomes annual blanket orders with scheduled call-offs. We maintain safety stock for key customers and can manage VMI (Vendor Managed Inventory) arrangements for high-volume repeating components.

Equivalent Terms – Multilingual Reference

Related Products and Linked Terms

• Brass Screw Machine Parts
• Brass Turned Parts – Brass Turned Components
• CZ121 Brass Turned Parts
• CW614N Brass Components and Parts
• Brass Hot Forged Parts – Brass Hot Stamped Parts
• Brass Forging Parts – Brass Forged Components
• Copper Machined Parts

Request a Quote

Electrical Accessories India engineers are ready to review your drawing or specification and provide a detailed technical and commercial proposal within 24 hours. Send your RFQ with quantity, alloy grade, dimensional drawing (PDF/DXF/STEP), surface finish requirement, and delivery schedule. We export to 30+ countries with full shipping documentation including Certificate of Origin, Packing List, and Material Test Reports.

Contact us: Send your RFQ with quantity, grade, drawing (PDF/DXF/STEP), and delivery requirement. We respond within 24 business hours.