S-91410A626 3/8"-16 x 1 1/4" ASME B18.6.2 Set Screws

Key Features & Benefits at a Glance

• Exceptional holding power with cup point design that bites deeply into materials for secure, permanent fastening
• Superior durability from Rockwell B80 hardened steel construction that resists wear and deformation under heavy loads
• Quick installation with coarse UNC threads and Class 2A fit for faster assembly while maintaining precision tolerances
• High torque capability through external square drive design that prevents stripping during installation
• Reliable performance meeting ASME B18.6.2 specifications for consistent quality and dimensional accuracy
• Environmental compliance with RoHS 3 and REACH regulations for safe use in regulated industries
• Versatile application with 1-1/4" length providing ample engagement for various industrial fastening requirements

Professional Applications & Engineering Value

This 3/8"-16 UNC set screw delivers critical engineering solutions for industrial applications requiring permanent, high-strength fastening. The steel construction with Rockwell B80 hardness ensures the fastener maintains its structural integrity under vibration and heavy loads, preventing loosening in machinery components. The cup point design creates concentrated pressure that digs into shaft materials, providing superior resistance to rotational forces in pulley systems, gears, and collars. With coarse thread spacing and Class 2A thread fit, this fastener combines quick installation with precise tolerances, reducing assembly time while maintaining secure connections. The external square drive enables high-torque application without cam-out, making it ideal for maintenance-heavy environments where repeated adjustments are necessary. This set screw addresses common industrial challenges of component slippage and vibration-induced failure in demanding applications across manufacturing, automotive, and heavy equipment sectors.

Specification Summary & Compliance

This precision-engineered set screw features 3/8"-16 UNC coarse threads with Class 2A thread fit ensuring proper clearance and assembly efficiency. Manufactured to ASME B18.6.2 specifications for dimensional accuracy and performance reliability. The fastener is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting international environmental standards for restricted substances. With a 1-1/4" length, 3/8" head width, and 19/64" head height, this set screw maintains consistent dimensions for interchangeable use across industrial applications.