Inconel 718 Bolts

Inconel 718 Bolts, Specifications & Dimensions

Inconel 718 bolts are externally threaded fasteners with an integral head, manufactured per ASME B18.2.1, ISO 4014/4017, and DIN 933/931. TorqBolt produces Inconel 718 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

Inconel 718 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. Thread fits per ASME B1.1 (Class 2A) or ISO 965 (6g) by default; tighter Class 3A / 4h6h on request.

Mechanical & Certification

Inconel 718 bolts achieve characteristic tensile, yield, and elongation per the source-material spec, with proof-load testing and hardness verification per ASTM F606 / ISO 898-1. Each lot ships with EN 10204 3.1 (or 3.2) certificates listing chemistry, mechanicals, hardness, and dimensional inspection. NACE MR0175 / ISO 15156 sour-service certification on request.

Inconel, Nickel-Chromium Superalloys

Inconel alloys are nickel-chromium-based superalloys engineered for service where standard stainless steels cannot survive. The Inconel family combines high-temperature strength (700-1100°C depending on grade) with outstanding oxidation and chloride-pitting resistance.

Inconel 718 is age-hardenable Ni-Cr-Fe-Mo-Nb strengthened by γ' and γ'' precipitates after solution + double-age treatment per AMS 5662. Inconel 625 is solid-solution strengthened by Mo+Nb. Inconel X-750 uses Ti+Al precipitation hardening for spring + bolt applications. Inconel 600 / 601 are general-purpose grades for furnace and heat-exchanger fasteners.

Specifications: ASTM B637 (forged bar), AMS 5662/5663 (rod/bar), ASTM B446 (625 bar). NACE MR0175 / ISO 15156 sour-service envelopes available on most grades. PREN values typically exceed 50 across the Inconel range.

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