3/8"-16 UNC-3A x 5/8" Socket Head Cap Screw
ASTM A320 Grade B8M Class 2. Machined to the customer's drawing in our Houston shop.
3/8"-16 UNC-3A x 5/8" · A320 Grade B8M Class 2 · ASME B18.3 Manufactured from ASTM A320 Grade B8M Class 2 material, this socket head cap screw is produced in accordance with ASME B18.3 specifications.
Special socket products are machined from bar where the specification allows, with the socket broached and the threads rolled, or cut where the specification or order allows, then heat treated and plated as the specification requires. Shoulder, low-head, flat-head and set-screw patterns follow ASME B18.3 unless the drawing says otherwise.
About the material: Strain-hardened 316 bolting certified to A320 — 110 ksi tensile in ¾ in. and under, for cold-service joints that need chloride resistance and bolt strength together. Read the A320 B8M Class 2 data page →
