S-91375A630 3/8"-16 x 1 3/4" 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 torque transmission through hex drive design, preventing tool slippage during installation
• Precise Class 3A thread fit ensuring secure fastening with minimal vibration loosening
• High-strength Rockwell C45 hardness providing reliable performance under heavy mechanical stress
• Coarse UNC threads enabling quick installation and superior holding power
• Cup tip design creating positive seating and preventing component damage
• Headless construction allowing for flush mounting in space-constrained applications

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers critical engineering solutions for industrial applications where vibration resistance and corrosion protection are paramount. The 3/8"-16 UNC Class 3A coarse threads provide superior grip strength in machinery components, while the hex drive ensures maximum torque application without stripping. The cup tip design minimizes surface damage to shafts and collars, making it ideal for permanent positioning applications in power transmission systems, automotive assemblies, and heavy equipment. The Rockwell C45 hardness maintains structural integrity under repeated stress cycles, solving common failure points in high-vibration environments.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit for precision tolerance. Features 3/8"-16 UNC coarse threads with right-hand direction and 1 3/4" length. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe use across global industrial markets.