1"-8 x 5" Stainless Steel 304 B8 Heavy Hex Head Cap Screw, Partial Thread, ASTM A193 Class 1

This 1"-8 x 5" heavy hex head cap screw is manufactured from Type 304 stainless steel and certified to ASTM A193 Grade B8, Class 1, providing dependable strength and corrosion resistance for long‑reach industrial and structural fastening applications. The partial‑thread (PT) configuration includes an extended unthreaded shank that improves shear capability and maintains proper alignment in high‑load bolted joints, particularly in flanged connections and thick structural assemblies. The 5" length allows secure fastening through substantial material stacks, while the heavy hex head offers increased bearing surface and enhanced wrench engagement for precise torque control. Commonly used in piping systems, pressure assemblies, equipment supports, and heavy fabrication, this stainless fastener delivers reliable resistance to rust, oxidation, and environmental exposure for consistent, long‑term performance in indoor, outdoor, and moderately corrosive environments.