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Lead Free Brass Screw Machine Parts
Lead Free Brass Screw Machine Parts
Electrical Accessories India manufactures high-precision Lead Free Brass screw machine parts using certified lead-free Brass alloys including CW724R (CuZn21Si3P), UNS C69300 (ECO BRASS), CW511L, and bismuth-modified lead-free Brass grades. Our screw machine components are produced on multi-spindle automatic lathes, Swiss-type CNC lathes, and CNC turning centres for electrical OEMs, EPC contractors, power utilities, plumbing manufacturers, and industrial distributors worldwide. All alloys contain lead below 0.09% and comply with RoHS 2, REACH, NSF/ANSI 61, California AB1953, and ELV Directive requirements. Pricing: US$ 11.50/kg ex-works India.
Product Overview
What Are Lead Free Brass Screw Machine Parts?
Screw machine parts are precision turned components produced in high volumes on automatic screw machines (multi-spindle or single-spindle lathes), Swiss-type CNC lathes, or CNC turning centres from bar-fed stock. Lead Free Brass screw machine parts are identical in function and geometry to conventional Brass screw machined parts, but are produced from alloys with lead content reduced to <0.09% to comply with RoHS 2, potable water standards, and green procurement mandates. Common part types include pins, nipples, connectors, terminals, bushings, spacers, inserts, adaptor bodies, valve stems, coupling bodies, fasteners, and contact bodies.
Lead Free Brass Alloy Grades Used
Electrical Accessories India produces lead-free screw machine parts from the following certified lead-free Brass alloys: CW724R (CuZn21Si3P, EN 12164, Pb <0.09%), UNS C69300 (ECO BRASS, ASTM B16, Pb <0.09%), CW511L (CuZn36Pb1As, Pb 0.7–2.0% – reduced lead DZR grade), bismuth Brass (CuZnBi, Pb <0.09%, SeBiLOY grade), and tellurium Copper (CW118C, C14500) for contact-grade components. Selection of alloy is based on application, regulatory requirement, machinability target, and conductivity specification.
Electrical and Electronic Component Parts
Lead Free Brass screw machine parts for electrical applications include contact pins, socket pins, banana plug bodies, terminal screw bodies, M3–M12 earth terminal bodies, compression cable lug bodies, grounding connector bodies, DIN rail terminal blocks, cable gland bodies (PG, Metric, NPT, and BSP thread), conduit locknuts, conduit nipples, cable entry bushings, socket contact inserts, and coaxial connector shells. All are produced to IEC 60884, IEC 60947, or customer-specific dimensional drawings.
Plumbing and Water System Parts
NSF/ANSI 61 and AB1953 compliant screw machine parts for plumbing systems include: compression sleeve nuts (olive compression), compression body inserts, push-fit coupling inserts, meter nipples, union bodies, pipe nipples (BSP, NPT, G), cross-pipe fittings, service valve stems, ball valve stems, check valve bodies, and backflow preventer bodies. Parts are produced from C69300 ECO BRASS or CW724R as preferred potable-water grades.
Fasteners, Inserts, and Threaded Components
Lead Free Brass screw machine fasteners include: M2–M48 hex head bolts, socket head cap screws (ISO 4762), machine screws (ISO 4762), grub screws, hex nuts (ISO 4032, 4033), flanged nuts, barrel nuts, studbolts, threaded rods, threaded inserts (helical, solid flanged), press-fit inserts, riveting inserts, and standoffs. Thread forms: ISO metric, UNC, UNF, UNEF, BSP (BSPP/BSPT), NPT, Pg (conduit), G (ISO 228). Thread rolling and thread grinding available for fine-pitch precision threads.
Hydraulic and Pneumatic Fittings
Lead Free Brass screw machine fittings for hydraulic and pneumatic systems: straight connectors, male BSP adaptors, female BSP adaptors, elbow fittings (90°, 45°), tee fittings, cross fittings, union elbows, union tees, banjo fittings, banjo bolts, hydraulic nipples, barb fittings, push-in fittings, compression sleeves, and ferrules. All manufactured to ISO 8434-1, BSP (BS EN ISO 228), DIN 3901/3902, and SAE J514 (JIC) thread standards. Pressure rated to 250 bar hydraulic working pressure.
Automotive and ELV-Compliant Parts
Lead Free Brass screw machine parts compliant with ELV Directive (2000/53/EC) for automotive OEM applications: fuel system connectors, fuel line banjo bolts, coolant system fittings, oil system adaptors, HVAC refrigerant fittings, ABS sensor housings, gearbox control fittings, brake line adaptors, EGR (exhaust gas recirculation) fittings, and EVAP system connectors. IMDS (International Material Data System) data and PPAP Level 1–3 documentation available.
Specialty and OEM Screw Machine Parts
Electrical Accessories India also produces specialty Lead Free Brass screw machine parts: instrument fittings (thermocouple wells, pressure tap connectors), precision bushings (plain, flanged, bi-metallic), optical instrument mounts, medical device components (non-implant), RF and microwave connector components, test and measurement connectors, PCB spacers, electronic chassis standoffs, and custom-profile turned components to ±0.005 mm tolerance. All specialty parts are supplied with full dimensional inspection report and material certificate.
Key Features
- Multiple Lead-Free Alloy Options: CW724R, C69300 ECO BRASS, bismuth Brass, and others — alloy selected to optimise performance vs. compliance requirement.
- High Volume Capability: Multi-spindle automatic lathes up to 8 spindles; production rates up to 600,000 pcs/month per machine.
- Tight Tolerances: Swiss-type CNC for ±0.005 mm; multi-spindle for ±0.025 mm on diameter; thread gauging 100% on go/no-go.
- Full RoHS / REACH / NSF Compliance: Lead <0.09%; NSF/ANSI 61; AB1953; California Prop 65 compliant.
- ISO 9001:2015 Certified: Full quality management system with XRF material verification, CMM inspection, and certificate of conformity.
- Competitive Pricing: US$ 11.50/kg ex-works India; volume discounts available from 10,000 pcs/run.
Screw Machine Production Technology
Production uses a combination of Davenport multi-spindle automatic screw machines (8-spindle), Brown & Sharpe-type single-spindle automatics, Swiss-type CNC lathes (Citizen L-series, Star SB, Tsugami B), and CNC turning centres with bar-feeders. Swiss-type machines handle small-diameter precision parts (Ø1–32 mm) with length-to-diameter ratios up to 30:1. Multi-spindle automatics achieve highest output rates for simpler geometries (Ø6–50 mm). Bar stock diameters 2–65 mm; bar length 3–4 m standard. Fully automated parts-handling with bowl feeders, tray loaders, and conveyor systems for unmanned overnight operation.
Quality Control and Inspection
Incoming Brass bar stock is 100% verified by portable XRF spectrometer (Olympus Delta, Bruker) for alloy composition and lead content quantification. First-article parts are fully dimension-reported on CMM (Mitutoyo Crysta-Apex) with 3D GD&T reporting. Thread gauging using calibrated TESA go/no-go thread plug gauges and ring gauges verified by NPL-traceable calibration. Surface finish measurement by Taylor Hobson Surtronic profilometer. Outgoing inspection lot sizes per AQL 1.0 (critical dimensions) and AQL 2.5 (general dimensions) per ISO 2859-1. Full traceability maintained via batch-level material records linked to shipment documentation.
Materials Traceability and Certification
Each production lot of Lead Free Brass screw machine parts is accompanied by: EN 10204 3.1 Mill Test Certificate (MTC), XRF alloy composition report, RoHS 2 conformity declaration (Directive 2011/65/EU), REACH SVHC non-presence declaration (ECHA Candidate List), NSF/ANSI 61 material letter (for water contact applications), California AB1953 / Vermont Act 193 <0.25% weighted average Pb compliance statement, and shipment documentation (invoice, packing list, certificate of origin, phytosanitary certificate where required). All documentation is available digitally (PDF) for regulatory audit purposes.
Surface Finishing and Secondary Operations
Lead Free Brass screw machine parts are supplied in the following surface conditions as standard: as-machined (natural Brass colour), bright polished (barrel finishing or belt polishing), or with applied surface treatment. Available plating and coating options: bright nickel electroplating (EN/ISO 1456), matte nickel, electroless nickel (EN/ISO 4527), tin plating (matte or bright, ROHS-compliant, Pb-free), silver plating, gold plating (flash or thick gold), tin-silver alloy plating, zinc-nickel plating, chromate conversion coating (trivalent, RoHS-compliant), and lacquering. Plating thicknesses certified to customer specification.
Packaging and Export Logistics
Standard packaging: polybag with desiccant silica gel, placed in corrugated carton boxes. Bulk packing in steel drums or wooden cases available for larger parts or fragile assemblies. All export packages comply with ISPM-15 for wood packaging materials. International shipping via air freight (DHL, FedEx, UPS – 3–5 days to Europe/USA) and sea freight (FCL/LCL – 20–35 days). Export documentation: commercial invoice, packing list, Bill of Lading, Certificate of Origin (Chamber of Commerce), E-Form (GST/export rebate), and MSDS/SDS where required for surface-treated parts.
Technical Specifications
| Alloy Grade | Designation | Pb Max | Machinability % | Standard | Key Compliance |
|---|---|---|---|---|---|
| CW724R | CuZn21Si3P | 0.09% | ~70% | EN 12164 | RoHS, REACH, NSF, ELV |
| C69300 (ECO BRASS) | CuZn21Si3Mn2Al | 0.09% | ~80% | ASTM B16 | RoHS, REACH, NSF, AB1953, ELV |
| Bismuth Brass | CuZnBi (SeBiLOY) | 0.09% | ~85% | ASTM B16 | RoHS, REACH |
| CW511L (DZR reduced Pb) | CuZn36Pb1As | 0.7–2.0% | ~90% | EN 12164 | DZR Class A, WRAS |
| C14500 (Tellurium Copper) | CuTeP | <0.005% | ~85% | ASTM B301 | RoHS, High conductivity |
| Price: US$ 11.50/kg ex-works India (Brass grades) | |||||
Manufacturing Capabilities
| Process | Machine Type | Diameter Range | Tolerance |
|---|---|---|---|
| Swiss-type CNC | Citizen L20, Star SB-16 | Ø1 – 32 mm | ±0.005 mm |
| Multi-spindle Automatic | Davenport (8-spindle) | Ø6 – 50 mm | ±0.025 mm |
| CNC Turning Centre | Mazak Quick Turn, DMG MORI | Ø6 – 100 mm | ±0.01 mm |
| CNC Milling | Haas VF-2, Mazak VCN | Up to 250 mm | ±0.01 mm |
| Thread Rolling | Reed / Fette | M2 – M36 | 6H/6g standard |
| Surface Finish | Barrel / Belt / Tumble | All sizes | Ra 0.4 – 3.2 μm |
Applications by Industry
| Industry | Lead Free Brass Screw Machine Parts Used |
|---|---|
| Electrical / Power Distribution | Cable gland bodies, terminal block screws, earth pins, busbar bolts, compression lugs |
| Potable Water (NSF/AB1953) | Compression olive nuts, valve stems, meter nipples, push-fit inserts |
| Gas Systems | Meter fittings, service valve bodies, regulator spindles |
| Automotive (ELV) | Fuel line banjo bolts, coolant fittings, sensor housings, brake adaptors |
| HVAC | Refrigerant service ports, flare fittings, expansion valve stems |
| Oil & Gas / Industrial | Instrument fittings, thermocouple wells, impulse line adaptors |
| Electronics | PCB standoffs, coaxial connector shells, RF connector pins, terminal pins |
| Medical Devices | Non-implant instrument components, probe bodies, housing components |
Manufacturing Process
The manufacturing process for Lead Free Brass screw machine parts begins with incoming inspection of certified bar stock (XRF spectrometer verification of Pb <0.09% and full alloy composition). Bar stock is loaded into magazine bar-feeders on Swiss-type or multi-spindle machines. CNC programs are developed using CAM software (Esprit, Mastercam) with feed/speed parameters optimised for lead-free Brass tooling (higher cutting speed, positive rake carbide inserts, water-soluble cutting fluid at 8% concentration). First-article parts are 100% dimensionally inspected on CMM before production run approval. Production runs are monitored by SPC (statistical process control) on critical dimensions. Parts exit machines via conveyor into tray collection, then proceed to deburring (vibratory tumbling or hand deburring), cleaning (ultrasonic wash), inspection (AQL sampling), and packing. Surface treatment (plating) is carried out in-house or by approved plating sub-suppliers with EN 10204 2.2 plating certificates.
Quality Standards and Certifications
| Standard | Applicability |
|---|---|
| ISO 9001:2015 | Quality Management System |
| RoHS 2 (2011/65/EU) | Lead-free compliance for EU market |
| REACH (EC 1907/2006) | No SVHC above 0.1% threshold |
| NSF/ANSI 61 | Potable water contact – USA |
| California AB1953 / Prop 65 | Lead-free plumbing – USA West Coast |
| Vermont Act 193 | Lead-free fittings – USA Northeast |
| ELV Directive 2000/53/EC | Automotive ELV compliance |
| EN 10204 3.1 | Mill test certificates per lot |
| ISO 2859-1 | Sampling inspection procedures (AQL) |
| ISO 6509 | Dezincification resistance (DZR test) |
Why Choose Electrical Accessories India for Lead Free Brass Screw Machine Parts
Electrical Accessories India specialises in lead-free Brass precision machining with dedicated production lines, segregated material storage, and documented alloy-change procedures to prevent cross-contamination. Our team of CNC programmers and tooling engineers has specific expertise in lead-free Brass tooling optimisation, minimising cycle time increases compared to leaded Brass while delivering superior corrosion resistance and regulatory compliance. We offer: competitive pricing at US$ 11.50/kg ex-works India; full compliance documentation (RoHS, REACH, NSF, AB1953, ELV); ISO 9001:2015 quality system; CMM-based dimensional inspection; and export logistics to 40+ countries. New part quotation and first article within 3–5 weeks from approved drawing.
Frequently Asked Questions (FAQ)
What alloys are used for Lead Free Brass screw machine parts?
The primary alloys used are CW724R (CuZn21Si3P, EN 12164), UNS C69300 (ECO BRASS, ASTM B16), and bismuth Brass (CuZnBi). All contain Pb <0.09%. For reduced-lead (not fully lead-free) applications, CW511L (CuZn36Pb1As, DZR Brass) is also available.
What is the price of Lead Free Brass screw machine parts?
Our standard pricing is US$ 11.50 per kilogram ex-works India for Brass alloys. Volume discounts apply for orders above 10,000 pcs/run. Request a formal quotation with your drawing or part sample.
What is the difference between lead-free and standard Brass screw machine parts?
Lead-free Brass contains <0.09% Pb vs. conventional free-cutting Brass (CW614N) which contains up to 3.5% Pb. Lead-free Brass parts are RoHS, REACH, NSF, and AB1953 compliant but require modified tooling and machining parameters. There is no difference in dimensional specification, function, or performance in most applications.
Can lead-free screw machine parts replace conventional Brass parts?
Yes, as drop-in replacements. Dimensions, thread standards, tolerances, and surface finishes are identical. The material change is transparent to end-users. Only the alloy designation on drawings/specifications needs to be updated to reference the lead-free grade.
What thread standards can you produce in lead-free Brass screw machine parts?
We produce: Metric (M2–M64), UNC (No.2 – 2½”), UNF, UNEF, BSP (G1/8 – G4), BSPT, NPT (1/16 – 4″), NPTF, Pg conduit threads, G (ISO 228), and custom thread profiles. Thread tolerance: 6H/6g metric; Class 2A/2B inch.
What is the minimum order quantity for lead-free screw machine parts?
Minimum order quantity is 500 pieces per part number for standard parts. Prototype/sample lots of 50–100 pieces are available at tooling-absorbed pricing for new part qualification.
How quickly can you deliver lead-free screw machine parts?
Standard lead time for new parts: 3–5 weeks from approved drawing (includes first article inspection). Repeat orders: 2–3 weeks. Air freight to Europe and USA: 5–7 days from dispatch.
Do you supply lead-free screw machine parts for potable water applications?
Yes. We supply C69300 ECO BRASS and CW724R screw machine parts compliant with NSF/ANSI 61, AB1953 (<0.25% weighted average Pb), and EN 15664-1 for use in water systems. Material letters and compliance documentation are supplied with every lot.
What certifications do you hold?
ISO 9001:2015 (quality management system), RoHS 2 compliance, REACH compliance. We supply EN 10204 3.1 material test certificates, XRF composition reports, and country-specific compliance declarations for all export markets.
Do you export lead-free Brass screw machine parts?
Yes — we export to Germany, UK, France, Netherlands, Italy, USA, Canada, UAE, Saudi Arabia, Australia, Singapore, South Africa, and 30+ countries. All export shipments include full compliance documentation for customs clearance and OEM qualification.
International Terms and Equivalents
| Language | Equivalent Terms |
|---|---|
| Spanish (Español) | Piezas de tornillo de latón sin plomo, Tornillería de latón libre de plomo, Componentes torneados de latón sin plomo |
| Russian (Русский) | Детали из безсвинцовой латуни, Токарные детали из латуни без свинца, Латунные детали автоматной обработки |
| French (Français) | Pièces décolletées en laiton sans plomb, Composants laiton sans plomb, Décolletage laiton sans plomb |
| Portuguese (Português) | Peças de latão sem chumbo torneadas, Componentes de latão livre de chumbo, Usinagem automática de latão sem chumbo |
| Italian (Italiano) | Parti tornite in ottone senza piombo, Componenti in ottone ecocompatibile, Tornitura automatica ottone senza piombo |
Related Products / Internal Links
- CW724R (CuZn21Si3P) Lead Free Brass Machined Parts
- UNS C69300 ECO BRASS Lead Free Brass Machined Parts
- Lead Free Brass Forgings
- Lead Free CW724R (CuZn21Si3P) CNC Machined Parts
- Brass Screw Machine Parts (Standard)
- C360 Brass Screw Machine Parts
Request a Quote – Lead Free Brass Screw Machine Parts
Electrical Accessories India – ISO 9001:2015 certified manufacturer of Lead Free Brass screw machine parts. Price: US$ 11.50/kg ex-works India. CW724R, C69300 ECO BRASS, Bismuth Brass. RoHS / REACH / NSF / AB1953 compliant. Export to 40+ countries.
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