S-90044A435 1/2"-13 x 7 1/4" ASME B18.3, ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi for reliable performance in high-stress applications
• Superior corrosion resistance from the black-oxide finish, extending service life in demanding environments
• Precise Class 3A thread fit ensures secure fastening and vibration resistance in industrial assemblies
• Hex socket drive design allows for high-torque installation and removal in confined spaces
• Coarse UNRC threads provide quick assembly and reduced cross-threading risks
• Partially threaded shank offers optimal grip length for controlled clamping force
• Full compliance with ASME B18.3, RoHS 3, and REACH standards for guaranteed quality and safety

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these black-oxide alloy steel socket head cap screws deliver exceptional durability where standard fasteners fail. The Class 3A thread fit and coarse UNRC threads ensure rapid, secure installation in machinery, automotive assemblies, and construction equipment, minimizing assembly time while maximizing joint integrity. The hex socket drive accommodates high torque requirements without stripping, ideal for maintenance and manufacturing operations. With 170,000 psi tensile strength and corrosion-resistant coating, these screws withstand extreme mechanical stress and environmental exposure, providing long-term reliability in critical fastening applications.

Specification Summary & Compliance

This 1/2"-13 x 7 1/4" socket head cap screw features a Class 3A thread fit with coarse UNRC right-hand threads and partial threading. Manufactured from alloy steel with Rockwell C37 hardness, it complies with ASME B18.3 and ASTM A574 specifications. The product is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting international environmental and safety standards for industrial use.