S-92220A263 1/2"-13 x 1 1/2" ASTM A574 Alloy Steel Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional strength and durability with 140,000 psi tensile strength and Rockwell C39 hardness for reliable performance in demanding applications
• Precise Class 3A thread fit ensures superior engagement and vibration resistance in critical assemblies
• Low-profile socket head design provides maximum clearance in confined spaces while maintaining high torque capability
• Black-oxide surface treatment offers corrosion resistance and enhanced appearance for industrial environments
• Fully threaded construction allows for maximum adjustability and consistent clamping force along the entire length
• Coarse UNC thread pattern enables quick installation and reduced cross-threading risks
• Comprehensive compliance with ASTM A574, RoHS 3, and REACH standards ensures material quality and environmental responsibility

Professional Applications & Engineering Value

These low profile socket head cap screws deliver critical engineering advantages where space constraints and high-strength requirements intersect. The black-oxide alloy steel construction provides excellent corrosion resistance while maintaining the 140,000 psi tensile strength needed for heavy machinery, automotive assemblies, and industrial equipment. The Class 3A thread fit ensures precise mating with tapped holes, reducing the risk of thread stripping and maintaining joint integrity under vibration and dynamic loads. The combination of coarse UNC threads and fully threaded design allows for rapid assembly in production environments while providing consistent clamping force distribution. These socket head cap screws are particularly valuable in applications requiring flush mounting without compromising on fastener strength or installation torque capabilities.

Specification Summary & Compliance

Manufactured to exacting ASTM A574 specifications, these screws feature precision Class 3A thread fit with 1/2"-13 UNC coarse threads and right-hand thread direction. The low profile socket head accommodates a standard 1/4" hex drive with dimensions of 3/4" head diameter and 1/4" head height. The 1-1/2" length provides optimal engagement for various material thicknesses. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures these fasteners meet international standards for restricted substances and chemical safety.