S-91274A336 3/8"-16 x 2 3/4" ASME B18.3, ASTM A574, ASTM B117 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with zinc-flake coating, ideal for harsh industrial environments
• Superior tensile strength of 170,000 psi for reliable performance in high-stress applications
• Precise Class 3A thread fit ensures secure, vibration-resistant assemblies with minimal backlash
• High hardness (Rockwell C37) provides excellent wear resistance and long service life
• 5/16" hex drive design allows for high-torque installation in confined spaces
• Partially threaded shank offers optimal grip and clamping force for specific joint requirements
• Comprehensive compliance with ASME, ASTM, RoHS 3, and REACH standards for guaranteed quality and safety

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these socket head cap screws deliver exceptional reliability in machinery, automotive, and heavy equipment assemblies. The zinc-flake-coated alloy steel construction provides superior corrosion resistance, significantly extending service life in challenging environments. With 170,000 psi tensile strength and Rockwell C37 hardness, these fasteners maintain structural integrity under extreme loads and vibrations. The 3/8"-16 UNC coarse thread and Class 3A thread fit ensure quick installation and secure fastening, while the 5/16" hex drive enables efficient torque application in space-constrained applications, reducing assembly time and improving productivity.

Specification Summary & Compliance

This socket head cap screw features precise Class 3A thread fit with 3/8"-16 UNC coarse threads and right-hand thread direction. Manufactured to ASME B18.3 specifications using ASTM A574 alloy steel, with corrosion testing per ASTM B117. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for global industrial applications.