1‑1/8"-7 x 5" Stainless Steel 304 B8 Heavy Hex Head Cap Screw, Partial Thread, ASTM A193 Class 1

This 1‑1/8"-7 x 5" heavy hex head cap screw is manufactured from Type 304 stainless steel and meets ASTM A193 Grade B8, Class 1 specifications, making it a dependable fastener for large‑diameter, long‑reach industrial and structural applications requiring corrosion resistance. The partial‑thread (PT) design incorporates an extended unthreaded shank that enhances shear strength, improves load transfer, and supports proper alignment in high‑stress bolted joints, particularly in flanged connections and thick structural assemblies. Its 5" length allows secure fastening through substantial material sections, while the heavy hex head provides increased bearing surface and superior wrench engagement for controlled, high‑torque installation. Commonly used in piping systems, pressure vessels, structural steel connections, and heavy equipment fabrication, this fastener delivers reliable resistance to rust, oxidation, and environmental exposure for long‑term performance in indoor, outdoor, and moderately corrosive environments.