1‑1/8"-7 x 3" Stainless Steel 316 B8M Heavy Hex Head Cap Screw, Full Thread, ASTM A193 Class 1

Manufactured from 316 stainless steel and meeting ASTM A193 Grade B8M, Class 1 specifications, the 1‑1/8"-7 x 3" heavy hex head cap screw is designed for high‑strength, corrosion‑resistant fastening in demanding industrial and structural applications. The full‑thread (FT) configuration provides complete thread engagement along the entire shank, supporting uniform clamping force and reliable joint integrity in medium‑to‑heavy duty assemblies. The heavy hex head offers a larger bearing surface and improved wrench engagement compared to standard hex heads, allowing precise torque control during installation. Commonly used in marine environments, chemical processing equipment, pressure systems, and outdoor structural assemblies, this fastener delivers dependable performance and long service life in corrosive and moisture‑exposed conditions.