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

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