S-90086A625 10-24 x 2 1/2" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
• Excellent thread-forming capability through Type F thread cutting design that creates strong, permanent threads in various materials
• Optimized for multiple materials including aluminum, brass, cast iron, and sheet metal applications
• Enhanced driving efficiency with Phillips No. 2 drive that provides reliable torque transmission and reduces cam-out
• Complete thread engagement with fully threaded design ensuring maximum holding power across the entire fastener length
• Precise countersinking with 82° flat head profile that sits flush with material surfaces for clean, professional finishes
• Industry-standard compatibility with UNC coarse threads that provide quick assembly and superior vibration resistance

Professional Applications & Engineering Value

These 10-24 UNC tapping screws deliver exceptional performance in metal fabrication and assembly operations. The zinc-plated steel construction provides reliable corrosion protection while maintaining high tensile strength. The thread cutting design (Type F) eliminates the need for pre-tapped holes, significantly reducing installation time and labor costs in aluminum, brass, cast iron, and sheet metal applications. The coarse UNC thread spacing ensures rapid installation and superior resistance to vibration loosening, making these Phillips drive screws ideal for high-volume production environments where efficiency and reliability are critical. The combination of fully threaded design and precise 82° countersink angle creates secure, flush-mounted connections that withstand mechanical stress and environmental challenges.

Specification Summary & Compliance

These tapping screws feature precise UNC Class 2A thread tolerances with 10-24 thread size and 2 1/2" length. Manufactured to meet ASME B18.6.3 specifications and SAE J933 standards for consistent quality and performance. The product is RoHS 3 (2015/863/EU) compliant and designed for use with No. 17 drill bit (0.173" diameter) for optimal hole preparation. The flat head with standard profile and Phillips No. 2 drive ensure compatibility with standard industrial tools and applications.