1‑1/2"-8 x 7‑1/2" Stainless Steel 304 B8 Heavy Hex Head Cap Screw, Partial Thread, ASTM A193 Class 1

This 1‑1/2"-8 x 7‑1/2" heavy hex head cap screw is manufactured from Type 304 stainless steel and meets ASTM A193 Grade B8, Class 1 specifications, making it suitable for large‑diameter, extended‑length fastening in high‑load industrial and structural applications where corrosion resistance is required. The partial‑thread (PT) design includes a long unthreaded shank that enhances shear strength, improves joint alignment, and supports proper load transfer in demanding bolted connections such as heavy flanges and thick structural assemblies. Its 7‑1/2" length allows secure engagement through substantial material stacks, while the heavy hex head provides increased bearing surface and excellent wrenching leverage for controlled, high‑torque installation. Commonly specified for piping systems, pressure vessels, structural steel connections, and heavy equipment fabrication, this stainless fastener delivers dependable resistance to rust, oxidation, and environmental exposure for long‑term performance in indoor, outdoor, and moderately corrosive environments.