1‑1/8"-8 x 6" Stainless Steel 304 B8 Heavy Hex Head Cap Screw, Partial Thread, ASTM A193 Class 1

This 1‑1/8"-8 x 6" heavy hex head cap screw is manufactured from Type 304 stainless steel and meets ASTM A193 Grade B8, Class 1 specifications, making it a reliable solution for large‑diameter, long‑length industrial fastening applications requiring corrosion resistance. The partial‑thread (PT) design features a long, smooth shank that improves shear strength, promotes accurate alignment, and ensures effective load transfer in high‑stress bolted joints, particularly in flanged connections and thick structural assemblies. The extended 6" length allows secure fastening through substantial material stacks, while the heavy hex head provides increased bearing surface and superior wrench engagement for controlled, high‑torque installation. Commonly used in piping systems, pressure equipment, structural steel connections, and heavy fabrication, this fastener delivers dependable resistance to rust, oxidation, and environmental exposure for long‑term service in indoor, outdoor, and moderately corrosive environments.