S-91375A663 7/16"-14 x 7/16" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in harsh industrial environments
• Exceptional thread precision with Class 3A fit ensuring reliable, vibration-resistant fastening in critical assemblies
• High-strength performance from Rockwell C45 hardened alloy steel, resisting deformation under heavy loads
• Secure installation and removal through 7/32" hex drive design, preventing tool slippage during torque application
• Effective component positioning with cup tip design that creates positive engagement on shaft surfaces
• Optimized for rapid assembly using coarse UNC threads that reduce cross-threading risks in production environments
• Space-saving headless configuration allowing flush mounting where clearance is limited

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers critical engineering advantages for industrial applications where vibration resistance and precise component positioning are paramount. The Class 3A thread fit maintains tight tolerances in machinery, automotive, and manufacturing equipment, preventing loosening under dynamic loads. The cup tip design bites securely into shaft materials, creating permanent alignment in pulley systems, gears, and collars. With coarse UNC threads, installation efficiency improves significantly in production lines while the hex drive accommodates standard tools for maintenance accessibility. The Rockwell C45 hardness ensures the fastener withstands repeated adjustments without thread degradation, making it ideal for permanent assemblies requiring reliable set screw performance.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications and ASTM F912 material standards, this set screw maintains precise Class 3A thread fit with 7/16"-14 UNC coarse thread configuration. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets. Dimensional accuracy includes 7/16" length, 0.438" thread diameter, and right-hand thread direction per inch measurement system requirements.