Monel K500 Fasteners

Monel K500 Fasteners — Material Overview & Form Factors

Monel K500 is a high-performance alloy used wherever standard fasteners cannot meet the corrosion, temperature, or strength envelope. TorqBolt manufactures the full Monel K500 fastener range — bolts, nuts, screws, washers, studs, and custom forgings — under one ISO 9001:2015 quality system, with PED 2014/68/EU module-H qualification for pressure-equipment service.

Where Monel K500 Excels

Monel K500 is specified in oil & gas wellhead components, refinery heat exchangers, petrochemical reactors, power-generation turbines, marine offshore platforms, and pharmaceutical / food-grade processing. Its corrosion resistance, high-temperature strength, and weldability make it the default for service conditions outside the carbon and standard-stainless envelope.

Form Factors Available

Standards & Certification

Monel K500 fasteners are supplied with EN 10204 3.1 (mill cert) or 3.2 (third-party witnessed) material test reports as standard. Additional certification packages: NACE MR0175 / ISO 15156, NORSOK M-650, API 6A (wellhead), API 20E (subsea bolting), PED 2014/68/EU. Third-party inspection by TUV, Lloyd's, BV, DNV, SGS, and Intertek arrangeable on order.

Monel — Nickel-Copper Alloys

Monel alloys are 67% Ni / 33% Cu solid-solution alloys distinguished by uniform corrosion resistance in seawater, hydrofluoric acid, alkalis, and salt brines.

Monel 400 (UNS N04400) is the base composition. Monel K-500 (N05500) adds Al + Ti for γ' precipitation hardening, raising yield to ~620 MPa — the standard for high-strength shafting in seawater. Monel R-405 is a free-machining variant.

Monel fasteners are produced per ASTM B164 with EN 10204 3.1 / 3.2 certificates. Galvanic compatibility with copper-nickel piping makes Monel the natural mate for naval, desalination, and salt-evaporator service.

Request a Quote for Monel K500 Fasteners

Get a quotation, lead time, and certification details. Reply within 24 hours, Monday-Saturday.

Or email enquiry@torqbolt.com directly · Call +91-22-6615-7017. We never share your details.