Stainless Steel A182 F44 Screws

A182 F44 Screws — Specifications & Dimensions

A182 F44 screws are externally threaded fasteners typically driven into a tapped hole. TorqBolt manufactures A182 F44 screws per ASME B18.3 (socket products), ASME B18.6.3 (machine screws), DIN 912 / 7991 / 6912, and ISO 4762 / 10642, in metric M3–M48 and imperial 0–1/2".

Drive Types

Head Styles

A182 F44 screws are available in cap, button, countersunk / flat (82° or 90°), pan, fillister, truss, and shoulder configurations.

Specialty Screws

TorqBolt produces A182 F44 set screws (cup-point, cone-point, dog-point, flat-point, hex-socket DIN 913/914/915/916), shoulder screws, and self-tapping screws. Each lot certified per EN 10204 3.1 / 3.2 with optional NACE MR0175 sour-service compliance.

Duplex & Super Duplex Stainless Steels

Duplex stainless steels have ~50/50 ferrite-austenite microstructure, doubling yield strength of 304/316 grades while improving chloride pitting resistance.

Duplex 2205 (UNS S32205) is standard with PREN ~35. Super Duplex 2507 (S32750) and Zeron 100 (S32760) push PREN to 41-42. SA-182 F51 / F53 / F55 / F60 are the ASME forged-flange equivalents.

Phase balance is critical: ferrite must stay 35-65% in weld + HAZ (ASTM A923 testing). Solution anneal at 1040-1100°C followed by water quench. Fasteners ship per ASTM A276 / A479 with EN 10204 3.1 / 3.2 certs including ferrite count and Charpy at -46°C.

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