S-91375A179 8-32 x 2" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Exceptional holding power with Class 3A thread fit for secure, vibration-resistant fastening in demanding applications
• Superior corrosion resistance due to Black-Oxide surface treatment, extending service life in harsh industrial environments
• High-strength durability from Rockwell C45 hardened alloy steel, preventing deformation under heavy loads
• Secure tamper-resistant installation with headless design and 5/64" hex drive, ideal for permanent assemblies
• Enhanced grip and alignment through cup tip design, minimizing component slippage during operation
• Reliable coarse UNC threading ensuring quick installation and superior resistance to loosening
• Industry-standard compliance meeting ASME B18.3 specifications for consistent performance and interchangeability

Professional Applications & Engineering Value

This 8-32 UNC Class 3A set screw delivers critical engineering solutions for industrial machinery, automotive components, and precision equipment. The Black-Oxide alloy steel construction combined with Rockwell C45 hardness provides exceptional resistance to wear and environmental degradation, addressing common failure points in high-vibration applications. The cup tip design creates concentrated contact pressure, preventing shaft movement in pulleys, gears, and collars. With coarse UNC threads and Class 3A fit, installation is both rapid and precise, maintaining clamping force in right-hand thread assemblies where reliability is paramount for operational safety and reduced maintenance intervals.

Specification Summary & Compliance

Manufactured to exacting ASME B18.3 standards with Class 3A thread fit for superior dimensional accuracy. Features UNC coarse threads (8-32) with 0.164" diameter and 2" length. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.