S-91385A244 10-24 x 3/4" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Vibration-resistant performance with permanent Nylon Patch thread locker that maintains secure fastening from -50°F to 250°F
• Superior durability through Black-Oxide Alloy Steel construction with Rockwell C45 hardness for extended service life
• Precise thread engagement with Class 3A thread fit ensuring reliable installation and consistent clamping force
• Easy installation and removal using standard 3/32" hex drive tooling while maintaining headless design for space-constrained applications
• Enhanced grip and positioning with cup tip design that provides concentrated contact pressure on mating surfaces
• Industry compliance assurance meeting ASME B18.3 specifications for dimensional accuracy and performance reliability
• Environmental regulation compliance with RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

This 10-24 UNC set screw delivers critical vibration resistance in demanding industrial environments where loosening under dynamic loads compromises equipment safety and performance. The permanent Nylon Patch locking mechanism creates a chemical bond that withstands temperature extremes from -50°F to 250°F, eliminating the need for secondary locking devices. Manufactured from Black-Oxide Alloy Steel with Rockwell C45 hardness, these headless set screws provide exceptional shear strength while resisting corrosion in various operating conditions. The coarse UNC thread pattern with Class 3A fit ensures rapid installation and reliable engagement in industrial machinery, automotive assemblies, and precision equipment where space constraints demand compact fastening solutions. The cup tip design concentrates clamping force for secure shaft positioning in collars, gears, and pulleys.

Specification Summary & Compliance

This set screw features precision 10-24 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy and engagement. Manufacturing complies with ASME B18.3 specifications governing dimensional standards for socket set screws. The product meets RoHS 3 (2015/863/EU) compliance for restricted hazardous substances and REACH (EC 1907/2006) regulations governing chemical substances. The Black-Oxide surface treatment provides corrosion resistance while maintaining the mechanical properties of the underlying Alloy Steel material with Rockwell C45 hardness rating.