S-91385A714 1/2"-13 x 1 1/2" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior vibration resistance with nylon patch thread locker that maintains secure fastening from -50°F to 250°F
• Exceptional durability through Rockwell C45 hardness black-oxide alloy steel construction
• Precise thread engagement with Class 3A fit UNC coarse threads for reliable holding power
• Easy installation and removal using the 1/4" hex drive in headless design
• Enhanced grip and positioning with cup tip design for concentrated contact pressure
• Industry-standard compliance meeting ASME B18.3 specifications for guaranteed performance
• Environmental responsibility with RoHS 3 and REACH compliance for global applications

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers critical performance in demanding industrial environments where vibration resistance and permanent positioning are paramount. The nylon patch thread locker embedded in the UNC coarse threads prevents loosening under extreme conditions, while the cup tip design concentrates force for superior grip on shafts, collars, and pulleys. Engineered with Rockwell C45 hardness, this Class 3A thread fit fastener maintains dimensional stability and corrosion resistance in machinery, automotive, and heavy equipment applications where reliability cannot be compromised.

Specification Summary & Compliance

Manufactured to ASME B18.3 standards with Class 3A thread fit precision, this 1/2"-13 UNC set screw features right-hand coarse threads and 1-1/2" length. The construction complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets while maintaining consistent performance specifications.