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Brian Fasteners is a Houston manufacturing and supplying company that is well-known for providing high-grade Copper Nickel 90/10 Nuts across the USA. Supported by decades of engineering expertise and quality orientation, we employ advanced cold forming and precision machining to supply nuts that comply with rigorous industry standards. Our in–house chemical laboratory and mechanical testing guarantee consistent performance, corrosion resistance and dimensional accuracy. From Gulf of Mexico offshore platforms to chemical processing facilities across the country, our Copper Nickel 90/10 Nuts provide reliable fastening solutions in even the most challenging environments.
Our Copper Nickel 90/10 Nuts are made up of about 90% copper and 10% nickel with small amounts of iron and manganese. The alloy is highly resistant to corrosion in seawater, chlorides, and acidic surroundings. They have a tensile strength of around 320 MPa and a yield strength of about 160 MPa. The moderate thermal conductivity of the material (~30 W/m·K) and excellent ductility (elongation of about 40%) further qualify it for cold forming. Annealing hardness is usually between 80 and 95 HV, with the usual Brinell hardness being 70–100 HB—guaranteeing stable mechanical performance under severe stress.
| Grade | Cu | Mn | Pb | Ni | Fe | Zn |
| Cupro Nickel 90/10 | 88.6 min | 1.0 max | 0.05 max | 9-11 max | 1.8 max | 1 max |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Cupro Nickel 90/10 | 0.323 lb/in3 at 68 F | 2260 F | 50000 psi | 20000 psi | 30 % |
| Specifications | ASTM B151 / ASME SB151 |
| Standard | DIN, ISO ,JIS ,GB, IS, BS, ASTM and all International Standards |
| Size | M3 – M100 | 3/6″ – 4″ | Custom Sizes |
| Length | 3 mm – 200 mm | Custom Sizes |
| Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
| Threads available | UNF, BSW, BSF, METRIC, UNC, or as required |
| Threads Configuration | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
| Form | Hex, Threading, Square, Round as per Gauge Etc. |
| Head | Hex, Square, Round, Hex flange, Flat, T-head & Triangular etc. |
| Neck type | Hex, Square, Triangular, Oval & Knurled etc. |
| Surface Treatment | Passivation /plain |
| Others Factor | OEM, ODM, ±0.03MM tolerance |
| Manufacturing Process | Wire Drawing, Cold Heading, Insert tapping, Heat Treatment, Surface Plating, Inspection, Packing. |
| Packing | IN BULK: carton, pallet, Small Boxes or customer request |
| Surface Coating | Black Oxide, Cadmium, Galvanized, Teflon, Xylan, Zinc, Others Upon Request |
| Test Certificate | As per EN 10204 / 3.1 Manufacturer Test Certificate, PED 97/23/EC Certified, Merk blatt AD 2000 W2 Certified |
| Certification | Dual Certified As per ASTM & ASME Codes |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Copper Nickel 90/10 Nuts are used extensively in marine engineering, shipbuilding, and offshore drilling platforms because of their higher resistance to corrosion from seawater and biofouling. They’re critical in building pipelines, heat exchangers, and desalination plants, where they’re exposed to saline conditions that can destroy inferior materials. Their high strength and endurance make them suitable for securing structural parts on oil rigs and submersible equipment. Further, these nuts are also suitable in chemical processing facilities, power plants, and seashore infrastructure projects, providing long-lasting, minimal-maintenance connections under extreme, saline or corrosive conditions.
Our Copper Nickel 90/10 Nuts at Brian Fasteners are properly packed so that they do not reach the client in a damaged state. Every nut is covered and packed separately in strong and moisture-proof packets to avoid the spoilage and deterioration. Proper labeling helps in quick identification and management of the items. Our packing process ensures that the nuts do not lose their quality and are ready for use, which is a clear depiction of our quality products and excellent customer relations.
Brian Fasteners is a leading manufacturer and supplier of high-quality fasteners in Houston , USA, with over 8 years of experience serving global industries.
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