S-91375A666 7/16"-14 x 5/8" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating for extended service life in demanding industrial environments
• Exceptional holding power from Class 3A thread fit ensuring secure, vibration-resistant fastening in critical applications
• Optimized torque transmission through hex drive design preventing tool slippage and damage during installation
• Enhanced material strength with Rockwell C45 hardness alloy steel providing reliable performance under heavy loads
• Maximum surface contact from cup tip design creating deep indentation for superior anti-rotation security
• Industry-standard compatibility with UNC coarse threads enabling easy installation and replacement in existing systems
• Regulatory compliance assurance meeting RoHS 3 and REACH environmental standards for global manufacturing applications

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers exceptional engineering value in industrial applications where vibration resistance and precise component positioning are critical. The headless design with cup tip provides maximum surface contact, creating permanent indentations that prevent shaft slippage in pulleys, gears, and collars. The Class 3A thread fit ensures tighter tolerances than standard fasteners, maintaining secure fastening in high-vibration environments like machinery, automotive systems, and power transmission equipment. The 7/16"-14 UNC coarse thread configuration allows for rapid installation while the hex drive design enables high torque application without cam-out issues. The Rockwell C45 hardness combined with black-oxide treatment provides both mechanical strength and corrosion protection, making these set screws ideal for demanding applications where reliability cannot be compromised.

Specification Summary & Compliance

This set screw features precision 7/16"-14 UNC Class 3A threads with coarse spacing, manufactured to exacting dimensional standards. The fastener complies with ASME B18.3 specifications (ASTM F912) for consistent quality and performance. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring suitability for global industrial applications. The right-hand thread direction and 5/8" length provide standardized installation across compatible components and assemblies.