3/8"-16 x 1 1/2" Socket Head Cap Screws / Alloy Steel / Black Oxide / Made in USA

3/8"-16 x 1 1/2" socket head cap screw in Alloy Steel, black oxide finish. For tooling, jigs and machine builds where the head must counterbore flush.

• SOCKET HEAD — a cylindrical head driven by hex key — high torque capacity in a small footprint, and it counterbores flush
• HEX SOCKET DRIVE — an internal hex taking an Allen key; high torque in a compact head that counterbores flush
• BLACK OXIDE — a conversion coating that adds almost no dimension, so thread fit is unchanged; it is a mild rust inhibitor when oiled, not a weather coating
• ALLOY STEEL — quenched and tempered for high tensile strength; nearly always supplied with a protective finish since the base metal rusts readily
• COARSE THREAD (UNC) — the default inch thread — faster to run down, more tolerant of dirt, damage and plating build-up