7/8"-9 x 5" Stainless Steel 316 B8M Heavy Hex Head Cap Screw, Partial Thread, ASTM A193 Class 1

Manufactured from 316 stainless steel and certified to ASTM A193 Grade B8M, Class 1, the 7/8"-9 x 5" heavy hex head cap screw is designed for corrosion‑resistant fastening in heavy‑duty industrial and structural applications. The partial‑thread (PT) configuration features a long unthreaded shank that enhances shear strength and promotes efficient load transfer across high‑stress bolted joints, making it ideal for flanged connections and thick material assemblies. Its 5" length provides deep engagement through substantial components, while the heavy hex head offers increased bearing surface and enhanced wrench engagement for controlled, high‑torque installation. Commonly specified for 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.