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

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