Brass Screw Nuts
Product Overview
Brass screw nuts are precision-machined from free-cutting brass alloys C36000 and C38500. Produced through cold forming and thread tapping per DIN 934 and ISO 4032 standards. Available in hex, wing, cap, and lock nut configurations. The natural corrosion resistance of brass, combined with its electrical conductivity and non-sparking properties, makes these nuts suitable for plumbing, electrical, and general industrial applications. Passivation and anti-tarnish treatments are available upon request.
Key Features
- Corrosion resistance in water and mild chemical environments.
- Good electrical conductivity for grounding applications.
- Non-sparking properties for hazardous environments.
- Available in multiple styles and thread pitches.
- Suitable for decorative and functional applications.
| Attribute | Specification |
| Material alloys | C36000 (free-cutting brass), C38500 (architectural brass) |
| Diameter range (metric) | M2 – M24 (coarse and fine pitch) |
| Diameter range (inch) | #4 – 1 inch (UNC/UNF) |
| Nut styles | Hex (DIN 934), wing (DIN 315), cap, lock (prevailing torque) |
| Surface treatments | Bright, tinned, nickel-plated, anti-tarnish lacquer |
| Standards | DIN 934, ISO 4032, DIN 315, custom specifications |
| Hardness (as-supplied) | 70 – 90 HRB (as-rolled), 90 – 105 HRB (half-hard) |
Plumbing
- Pipe and fitting connections
- Valve assemblies
- Water heater components
Electrical
- Ground terminal nuts
- Busbar fastening
- Switchgear assemblies
General Industry
- Pump and compressor
- Machinery adjustment
- Decorative hardware
Use the formula T = K × d × F to determine tightening torque (K = nut factor, d = nominal diameter, F = preload). For brass nuts, lubricated threads (K ≈ 0.14–0.17) require lower torque than dry threads (K ≈ 0.22–0.26). Avoid over-torquing to prevent thread stripping. For assembly with stainless steel bolts, apply anti-seize compound to prevent galling and seizing.
Frequently Asked Questions
Production & Customization
Chance & Union utilizes CNC machining and cold forming processes to produce brass screw nuts in both standard and custom dimensions. We offer material selection support, prototype development, and high-volume production with full quality control per ISO 9001. Custom finishes, special hardness levels, and non-standard nut geometries are available. Our engineering team can assist with design modifications for specific assembly requirements.
Storage & Handling
- Store in a clean, dry area with relative humidity below 50% to prevent tarnishing.
- Avoid contact with steel tools or acidic materials to prevent galvanic corrosion.
- Use plastic or coated containers; separate by grade, size, and finish.
- Implement FIFO rotation; recommended shelf life up to 24 months in original packaging.
- Inspect for discoloration or oxide spots before use; clean with a non-abrasive cloth if necessary.
Leveraging the factory's robust R&D and production capabilities, we specialize in high-strength rivets bolts, nuts, washers, pins, screws, and various non-standard custom parts. As experienced Custom Brass Screw Nuts Suppliers, we provide flexible manufacturing solutions for different customer requirements. Our product range covers materials including stainless steel, alloy steel, aluminum alloy, copper, and special alloys, utilizing processes such as cold heading, hot forging, and CNC machining. Our products are exported to over 25 countries, serving more than 200 clients.
Chance & Union is committed to seamlessly connecting "Manufactured in China" with the international market, providing global customers with one-stop fastening solutions from R&D to mass production through professional technology and exceptional quality.
