ASTM Standard Fasteners
ASTM Standard Fasteners — Material Overview & Form Factors
ASTM Standard is a high-performance alloy used wherever standard fasteners cannot meet the corrosion, temperature, or strength envelope. TorqBolt manufactures the full ASTM Standard 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 ASTM Standard Excels
ASTM Standard 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
- Bolts — hex, heavy hex, socket, button, countersunk; M6–M100 / 1/4"–4"
- Nuts — standard, heavy, jam, locking variants (nyloc, all-metal, flange)
- Screws — cap, machine, set, shoulder, self-tapping; all common drive types
- Washers — plain, spring, lock, Belleville, fender, tab
- Studs & threaded rod — ASTM A193 / A320 / A453 / A540
- Custom forgings — rings, blanks, shaped components to drawing
Standards & Certification
ASTM Standard 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.
Specialty Fastener Alloys
TorqBolt manufactures specialty fasteners across the full range of corrosion-resistant alloys, high-temperature superalloys, and engineered metallurgies required by process industries. Beyond high-volume Inconel, Hastelloy, Duplex, and stainless grades, our supply chain covers the long tail of specification-driven alloys for unique service envelopes.
Each specialty alloy is sourced from approved mills with full melt traceability through a closed forging route. Heat-treat condition, mechanical properties, and corrosion testing are controlled to the customer's drawing or governing specification — ASTM, ASME, AMS, MIL, NORSOK, NACE, or proprietary end-user codes. EN 10204 3.1 / 3.2 material test certificates issued with every lot.
Third-party inspection by TUV, Lloyd's, BV, DNV, SGS, and Intertek arrangeable. NACE MR0175 / ISO 15156, NORSOK M-650, API 6A, API 20E, and PED 2014/68/EU compliance available across the alloy range.
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