S-90251A173 6-32 x 1/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Permanent vibration resistance with nylon patch thread locker that maintains secure fastening under dynamic loads
• Superior corrosion resistance in harsh environments thanks to 316 Stainless Steel construction
• Maximum thread engagement with Class 3A fit ensuring precise, reliable connections
• Exceptional temperature tolerance from -50°F to 250°F for stable performance in extreme conditions
• Optimized torque transmission through hex drive design preventing tool slippage during installation
• Enhanced material durability with Rockwell B80 hardness providing excellent wear resistance
• Wide industrial compliance meeting ASME B18.3 standards and environmental regulations

Professional Applications & Engineering Value

This 6-32 UNC set screw delivers critical engineering solutions where vibration resistance and corrosion protection are paramount. The 316 Stainless Steel construction combined with the nylon patch thread locker prevents loosening in high-vibration machinery, automotive assemblies, and marine equipment. The coarse UNC thread with Class 3A fit ensures rapid installation and maximum holding power in production environments. The cup tip design provides concentrated contact pressure for secure shaft positioning in pulleys, gears, and collars. Ideal for industrial applications requiring permanent fastening solutions that withstand temperature fluctuations and corrosive conditions while maintaining regulatory compliance.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit for precision tolerance. Features 6-32 UNC coarse threads with right-hand direction and 1/4" length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The nylon patch thread locker maintains effectiveness across the specified temperature range of -50°F to 250°F.