1‑1/4"-7 x 3" Stainless Steel 304 B8 Heavy Hex Head Cap Screw, Full Thread, ASTM A193 Class 1

This 1‑1/4"-7 x 3" full‑thread heavy hex head cap screw is manufactured from Type 304 stainless steel and produced to ASTM A193 Grade B8, Class 1, offering dependable strength and corrosion resistance for large‑diameter industrial fastening applications. The full‑thread (FT) configuration provides continuous thread engagement along the entire shank, supporting uniform clamp load and flexibility in nut placement for high‑load assemblies. The heavy hex head increases bearing surface and provides enhanced wrench engagement, allowing controlled torque application during installation. Commonly specified for flanged joints, piping systems, pressure connections, and heavy equipment assemblies, this stainless fastener resists rust, oxidation, and environmental exposure, delivering reliable long‑term performance in indoor, outdoor, and moderately corrosive environments.