S-90086A630 12-24 x 3/4" 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-cutting performance in aluminum, brass, cast iron, and sheet metal without requiring pre-tapped holes
• Enhanced driving efficiency with Phillips No. 3 drive design for secure installation and reduced cam-out risk
• Optimal material engagement through fully threaded design and coarse UNC thread pattern for maximum holding power
• Precision flush mounting with standard flat head profile and 82° countersink angle for clean, professional finishes
• Reliable industrial compliance meeting ASME B18.6.3 specifications and RoHS 3 environmental standards
• Versatile application capability across multiple materials with recommended No. 8 drill bit for proper hole preparation

Professional Applications & Engineering Value

These 12-24 UNC thread cutting screws deliver exceptional engineering value in industrial fastening applications where material integrity and installation efficiency are paramount. The zinc-plated steel construction provides essential corrosion protection while maintaining the high-strength characteristics required for demanding environments. As Type F tapping screws with thread cutting capability, they eliminate the need for separate tapping operations in aluminum, brass, cast iron, and sheet metal assemblies, significantly reducing installation time and labor costs. The coarse UNC thread pattern ensures rapid installation and superior resistance to vibration loosening, while the fully threaded design maximizes grip length and distributes clamping forces evenly. The Phillips drive system offers familiar, efficient installation with reduced tool slippage compared to alternative drive types.

Specification Summary & Compliance

These tapping screws feature precise 12-24 UNC coarse threads with standard Class 2A thread tolerances for consistent performance. The manufacturing process strictly adheres to ASME B18.6.3 specifications (SAE J933), ensuring dimensional accuracy and mechanical reliability. Environmental compliance is maintained through RoHS 3 (2015/863/EU) certification, confirming the absence of restricted hazardous substances. The zinc-plated surface treatment provides corrosion resistance while the 82° countersink angle matches standard chamfered holes for proper seating in prepared applications.