1‑1/2"-6 x 8" Stainless Steel 304 B8 Heavy Hex Head Cap Screw, Partial Thread, ASTM A193 Class 1

This 1‑1/2"-6 x 8" heavy hex head cap screw is manufactured from Type 304 stainless steel and produced to ASTM A193 Grade B8, Class 1, making it a dependable fastener for very large‑diameter, long‑length industrial and structural applications where corrosion resistance is essential. The partial‑thread (PT) configuration incorporates a long, unthreaded shank that enhances shear strength, improves joint alignment, and supports efficient load transfer in high‑stress bolted connections such as heavy flanges and thick structural assemblies. Its extended 8" length allows secure fastening through substantial material stacks, while the heavy hex head provides increased bearing surface and excellent wrench engagement for controlled, high‑torque installation. Commonly used in piping systems, pressure vessels, structural steel fabrication, and heavy equipment installations, this stainless fastener delivers reliable resistance to rust, oxidation, and environmental exposure for long‑term performance in indoor, outdoor, and moderately corrosive environments.