1"-8 x 2‑1/2" 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"-8 x 2‑1/2" heavy hex head cap screw is designed for corrosion‑resistant fastening in demanding industrial and structural applications. The full‑thread (FT) configuration provides continuous thread engagement along the entire shank, ensuring uniform clamping force and reliable joint integrity where consistent load distribution is required. The heavy hex head offers increased 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 strength and long service life in corrosive and moisture‑exposed conditions.