S-91375A606 5/16"-24 x 1 1/2" 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
• Precise thread engagement with UNF Class 3A fine threads ensuring vibration-resistant, secure fastening
• High-strength performance from alloy steel with Rockwell C45 hardness for reliable load-bearing capacity
• Secure installation with 5/32" hex drive preventing tool slippage and damage during tightening
• Enhanced gripping power from cup tip design providing excellent bite into mating surfaces
• Space-saving headless design allowing flush mounting in confined applications
• Industry compliance assurance meeting ASME B18.3 standards for dimensional accuracy and performance

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers exceptional engineering value in demanding industrial applications where vibration resistance and corrosion protection are critical. The UNF Class 3A fine threads provide superior holding power in precision assemblies, while the cup tip design ensures maximum surface contact for secure component positioning. The headless configuration with 5/32" hex drive enables installation in space-constrained environments without compromising accessibility. Ideal for securing gears, pulleys, and collars on shafts in machinery, automotive, and manufacturing equipment, this high-strength set screw maintains integrity under continuous stress and rotational forces.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit for precise dimensional accuracy. Features 5/16"-24 UNF fine threads with right-hand direction and 1 1/2" length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets. The Rockwell C45 hardness rating confirms consistent mechanical properties for reliable performance in high-stress applications.