S-91274A360 3/8"-16 x 5" ASME B18.3, ASTM A574, ASTM B117 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance provided by zinc-flake coating, ensuring long-term reliability in harsh industrial environments
• Superior tensile strength of 170,000 psi delivers reliable performance in high-stress applications and heavy-duty assemblies
• Precision Class 3A thread fit ensures secure, vibration-resistant fastening with minimal risk of loosening
• Rockwell C37 hardness provides excellent durability and resistance to wear during repeated installation and removal
• Hex socket drive design allows for high-torque application and easy installation in confined spaces
• Coarse UNC thread profile enables quick assembly and reduced cross-threading risks in industrial applications
• Partially threaded shank design provides optimal clamping force distribution and prevents joint slippage

Professional Applications & Engineering Value

This zinc-flake-coated socket head cap screw addresses critical engineering challenges in demanding industrial environments where corrosion resistance and structural integrity are paramount. The alloy steel construction combined with Rockwell C37 hardness ensures exceptional durability against mechanical stress and wear, while the 170,000 psi tensile strength provides reliable performance in heavy machinery, automotive assemblies, and structural frameworks. The UNC coarse thread design facilitates rapid installation in production lines, reducing assembly time while maintaining secure fastening. The zinc-flake coating offers superior protection against corrosion, making these socket head cap screws ideal for outdoor equipment, marine applications, and manufacturing facilities exposed to moisture and chemicals. The hex drive socket enables high-torque application without stripping, ensuring consistent performance in maintenance and repair operations.

Specification Summary & Compliance

This socket head cap screw features precision Class 3A thread fit with UNC 3/8"-16 coarse threads and right-hand thread direction. Manufactured to ASME B18.3 specifications with material compliance to ASTM A574. The product meets ASTM B117 salt spray testing requirements and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for global industrial applications.