Stainless Steel SMO 254 Screws

Stainless Steel SMO 254 Screws — Specifications & Dimensions

Stainless Steel SMO 254 screws are externally threaded fasteners typically driven into a tapped hole. TorqBolt manufactures Stainless Steel SMO 254 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

Stainless Steel SMO 254 screws are available in cap, button, countersunk / flat (82° or 90°), pan, fillister, truss, and shoulder configurations.

Specialty Screws

TorqBolt produces Stainless Steel SMO 254 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.

Austenitic Stainless Steel (300-series)

Austenitic stainless steels are the workhorse 300-series Fe-Cr-Ni alloys delivering excellent corrosion resistance, formability, weldability, and toughness from cryogenic to ~600°C.

AISI 304 is the baseline; 304L prevents weld sensitization. 316 adds Mo for chloride pitting; 316L is the marine welding-grade. 309 / 310 are high-Cr for ~1100°C. 321 / 347 are Ti / Nb-stabilized.

Austenitic fasteners are supplied per ASTM A193 grade B8 (304), B8M (316), B8T (321), B8C (347). EN 10204 3.1 / 3.2 certs cover mechanicals, hardness (HB ~150-217), and ASTM A262 Practice E intergranular corrosion testing.

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