7/8"-9 x 3" Stainless Steel 316 B8M Heavy Hex Head Cap Screw, Partial Thread, ASTM A193 Class 1

Manufactured from 316 stainless steel and compliant with ASTM A193 Grade B8M, Class 1, the 7/8"-9 x 3" heavy hex head cap screw is engineered for corrosion‑resistant fastening in demanding industrial and structural applications. The partial‑thread (PT) design includes an unthreaded shank section that enhances shear strength and ensures effective load transfer in high‑stress bolted joints, making it especially suitable for flanged connections and thicker material assemblies. Its 3" length provides balanced grip and alignment, while the heavy hex head offers increased bearing surface and improved wrench engagement for controlled torque application 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.