S-90087A849 5-40 x 3/8" 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 with Type F tapping design creates precise threads in aluminum, brass, cast iron, and sheet metal without pre-tapping
• Enhanced driving efficiency through Phillips No. 2 drive system that minimizes cam-out and ensures secure installation
• Optimized material engagement with coarse UNC thread spacing and full threading for maximum holding power in various metals
• Reliable seating and distribution from standard pan head design that provides consistent clamping force across fastened surfaces
• Streamlined installation process with compatible No. 35 drill bit (0.11") specification for precise hole preparation and faster assembly
• Industry-standard compliance meeting ASME B18.6.3 specifications ensures consistent quality and interchangeability

Professional Applications & Engineering Value

These 5-40 UNC thread cutting screws deliver exceptional value in metal fabrication and assembly operations. The zinc-plated steel construction provides essential corrosion protection while maintaining high tensile strength for durable fastening solutions. The Type F thread cutting design with blunt tip eliminates the need for separate tapping operations, significantly reducing installation time and labor costs in aluminum, brass, cast iron, and sheet metal applications. The coarse UNC thread form ensures rapid installation and superior resistance to vibration loosening, while the fully threaded configuration allows for adjustable engagement depth across varying material thicknesses. These self-tapping screws are engineered to solve common assembly challenges including stripped threads, cross-threading, and inconsistent clamping force in industrial manufacturing environments.

Specification Summary & Compliance

These tapping screws feature 5-40 UNC coarse threads with standard Class 2A tolerance for reliable fit and performance. The manufacturing process strictly adheres to ASME B18.6.3 specifications (SAE J933) ensuring dimensional accuracy and mechanical properties. The zinc-plated steel material provides RoHS and REACH compliance for environmental regulations. With right-hand thread direction, fully threaded design, and compatibility with No. 35 drill bit (0.11"), these screws deliver consistent performance meeting industrial fastening standards for quality and reliability.