S-90086A621 10-24 x 5/8" 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
• Effortless installation in aluminum, brass, cast iron, and sheet metal without pre-tapped holes, saving time and labor costs
• Secure fastening with coarse UNC threads and full threading that provide excellent holding power in various materials
• Streamlined assembly with standard flat head design and No. 2 Phillips drive for flush mounting and compatibility with common tools
• Reliable performance meeting ASME B18.6.3 specifications, ensuring consistent quality and dimensional accuracy
• Environmental compliance with RoHS 3 standards, making them suitable for regulated industries and global supply chains
• Optimized material compatibility with recommended No. 17 drill bit and 82° countersink angle for precise, professional results

Professional Applications & Engineering Value

These 10-24 UNC zinc-plated steel tapping screws deliver exceptional engineering value in metal fabrication and assembly operations. The thread cutting design (Type F) eliminates the need for separate tapping operations, significantly reducing installation time and tooling requirements in aluminum, brass, cast iron, and sheet metal applications. The combination of coarse thread spacing and fully threaded shank ensures maximum thread engagement and pull-out resistance, addressing common vibration loosening issues in industrial equipment. The zinc-plated finish provides reliable corrosion protection, while the standard flat head with No. 2 Phillips drive offers compatibility with automated assembly systems and manual installation tools alike, making these tapping screws ideal for high-volume manufacturing environments where reliability and efficiency are critical.

Specification Summary & Compliance

These screws feature 10-24 UNC coarse threads with standard Class 2A tolerances for consistent fit and performance. Manufacturing complies with ASME B18.6.3 specifications (SAE J933) ensuring dimensional accuracy and mechanical properties. The products are RoHS 3 (2015/863/EU) compliant and meet relevant industry standards for material composition and environmental safety. Threading is fully extended along the 5/8" length with blunt tip design, optimized for use with No. 17 drill bit (0.173" diameter) and 82° countersink angle in various metal substrates.