1‑1/2"-8 x 7‑1/2" Stainless Steel 316 B8M Heavy Hex Head Cap Screw, Partial Thread, ASTM A193 Class 1

Manufactured from 316 stainless steel and certified to ASTM A193 Grade B8M, Class 1, the 1‑1/2"-8 x 7‑1/2" heavy hex head cap screw is designed for large‑diameter, high‑load fastening applications requiring exceptional corrosion resistance. The partial‑thread (PT) configuration incorporates a long unthreaded shank that improves shear strength and ensures proper load transfer in heavily stressed bolted joints, making it ideal for flanged connections and thick structural assemblies. Its extended 7‑1/2" length allows deep, secure engagement through substantial material sections, while the heavy hex head provides increased bearing surface and enhanced wrench leverage for controlled, high‑torque installation. Commonly specified for marine environments, chemical processing equipment, pressure systems, and outdoor structural installations, this fastener delivers dependable performance and long service life in corrosive and moisture‑exposed conditions.