1‑1/4"-7 x 5" Stainless Steel 304 B8 Heavy Hex Head Cap Screw, Partial Thread, ASTM A193 Class 1

This 1‑1/4"-7 x 5" heavy hex head cap screw is manufactured from Type 304 stainless steel and complies with ASTM A193 Grade B8, Class 1, delivering dependable corrosion resistance and strength for large‑diameter, long‑reach industrial fastening applications. The partial‑thread (PT) design includes a substantial unthreaded shank that improves shear performance, supports proper joint alignment, and enhances load transfer in high‑stress bolted connections such as flanges and thick structural assemblies. Its 5" length allows secure fastening through deep material stacks, while the heavy hex head provides increased bearing surface and strong wrench engagement for controlled, high‑torque installation. Commonly used in piping systems, pressure equipment, structural steel fabrication, and heavy machinery assemblies, this fastener offers reliable resistance to rust, oxidation, and environmental exposure for long‑term service in indoor, outdoor, and moderately corrosive environments.