S-90251A258 10-32 x 1/2" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Vibration-resistant locking with permanent Nylon patch that maintains secure fastening in high-stress applications
• Superior corrosion resistance thanks to 18-8 stainless steel construction for extended service life in harsh environments
• Precise thread engagement with Class 3A fit ensuring reliable, consistent performance in critical assemblies
• Wide temperature tolerance from -50° to 250°F for stable performance across diverse operating conditions
• Enhanced grip and alignment through cup tip design that minimizes component damage during installation
• Space-saving headless design with 3/32" hex drive for applications requiring flush mounting and compact assemblies
• Industry-standard compliance meeting ASME B18.3 specifications for guaranteed interoperability and quality

Professional Applications & Engineering Value

This 10-32 UNF set screw delivers exceptional engineering value in applications where vibration resistance and space constraints are critical concerns. The Nylon patch locking technology creates a permanent chemical bond that prevents loosening under continuous stress, eliminating the need for additional locking components. Manufactured from 18-8 stainless steel with Rockwell B80 hardness, it provides optimal strength-to-weight ratio while resisting corrosion in industrial environments. The headless design with 3/32" hex drive allows for flush installation in tight spaces, while the cup tip ensures positive seating without damaging mating surfaces. Ideal for precision machinery, automotive components, and electronic enclosures requiring reliable fine thread fastening that maintains integrity across temperature extremes.

Specification Summary & Compliance

This set screw features 10-32 UNF fine threads with Class 3A thread fit for precision tolerance, right-hand thread direction, and 1/2" length. The manufacturing process adheres to ASME B18.3 standards ensuring dimensional accuracy and performance reliability. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances. The Nylon patch thread locker maintains effectiveness across the specified temperature range of -50° to 250°F while the Rockwell B80 hardness provides optimal durability for repeated use.