Brass C360 Fasteners
C360 is the most widely used brass alloy for precision fasteners. Its 3% lead content provides exceptional machinability — up to 100% machinability rating — making it ideal for high-volume CNC production of bolts, screws, nuts and inserts.
Technical Specifications
| Composition | 61.5% Cu, 35.5% Zn, 3% Pb |
| Tensile Strength | 340–470 MPa |
| Yield Strength | 140–310 MPa |
| Hardness | 55–80 HRB |
| Elongation | 15–53% |
| Machinability | 100% (reference standard) |
| Conductivity | 28% IACS |
| Melting Point | 885–900°C |
| Standard | ASTM B16, ASTM B124 |
Key Properties
- Excellent machinability (100% machinability rating)
- Free-cutting — minimal tool wear
- Good corrosion resistance in most environments
- Superior surface finish after machining
- Good electrical conductivity
- Cost-effective for high-volume production
Typical Applications
Precision Fasteners
Bolts, screws, nuts and inserts requiring tight tolerances and fine surface finish.
Electrical Components
Terminal blocks, connectors and switchgear parts requiring conductivity.
Automotive Parts
Fuel system fittings, sensor housings and instrument panel hardware.
Hydraulic Fittings
Valve bodies and hydraulic connectors requiring precise machining.
Plumbing Fittings
Compression fittings and valve stems for water systems.
Available Fasteners in C360 Brass
Frequently Asked Questions
Why is C360 the most popular brass grade for fasteners?
C360 has a 100% machinability rating — the reference standard for all other metals. Its lead content acts as a chip-breaker during machining, reducing tool wear and enabling high-speed production of precision parts.
Is C360 brass RoHS compliant?
Standard C360 contains 3% lead and is not RoHS compliant. For RoHS applications, RKIC Group offers C260 or C270 lead-free alternatives. Contact our technical team for guidance.
What sizes are available in C360 brass fasteners?
C360 brass fasteners are available from M2 to M36 in metric and #2 to 3/4" in UNC/UNF thread sizes. Custom sizes are available on request.
Need C360 Brass Fasteners?
Contact our technical team for specifications, samples and bulk order pricing.