1‑1/8"-8 x 3" Stainless Steel 304 B8 Heavy Hex Head Cap Screw, Full Thread, ASTM A193 Class 1

This 1‑1/8"-8 x 3" full‑thread heavy hex head cap screw is manufactured from Type 304 stainless steel and produced in accordance with ASTM A193 Grade B8, Class 1, providing dependable strength and corrosion resistance for large‑diameter industrial fastening applications. The full‑thread (FT) construction allows continuous thread engagement along the entire shank, making it ideal for high‑load assemblies that require consistent clamping force and flexibility in nut placement. The heavy hex head delivers a larger bearing surface and improved wrench engagement compared to standard hex heads, supporting controlled torque application during installation. Commonly specified for flanged joints, pressure connections, piping systems, and heavy equipment assemblies, this fastener resists rust, oxidation, and environmental exposure, ensuring long‑term performance in indoor, outdoor, and moderately corrosive service conditions.