ASTM A193 B7

ASTM A193 B7 Bolts, Specifications & Dimensions

ASTM A193 B7 bolts are externally threaded fasteners with an integral head, with heads to ASME B18.2.1 or ASME B18.2.3.3M unless otherwise specified (ASTM A193/A193M 10.2); ISO 4014/4017 or DIN 933/931 dimensions when specified in the order. TorqBolt produces ASTM A193 B7 bolts in metric (M6–M100) and imperial (1/4"–4") diameters with custom lengths from 10 mm up to 3000 mm.

Head Styles Available

Thread & Shank

ASTM A193 B7 bolts are supplied with full or partial threading. Full-thread (UNC, UNF, ISO metric coarse/fine) for tension-only joints; partial-thread shank for shear loads. Unless otherwise specified, threads are ASME B1.1 Class 2A or ASME B1.13M Class 6g, coarse series for 1 in. and smaller and 8-pitch series for 1-1/8 in. and larger (ASTM A962/A962M 13.4, required by ASTM A193/A193M Section 4); Class 3A on request.

Mechanical & Certification

ASTM A193 B7 bolts meet the tensile, yield, elongation, reduction of area and hardness requirements of ASTM A193/A193M Table 2 (inch) or Table 3 (metric), with hardness testing per ASTM A962/A962M or F606/F606M (9.2.1) and full-size wedge tensile testing of headed bolts where 12.1.3 applies. Each lot ships with EN 10204 3.1 (or 3.2) certificates listing chemistry, mechanicals, hardness, and dimensional inspection. For sour service, ISO 15156-2 (NACE MR0175) Table A.4 lists ASTM A193 B7M, not B7, as the acceptable A193 bolting grade.

: specification facts on this page checked against ASTM A193/A193M, ASTM A962/A962M, ISO 15156-2.

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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