S-90086A661 3/8"-16 x 5" 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 design that creates precise mating threads in aluminum, brass, cast iron, and sheet metal
• Enhanced driving efficiency through No. 4 Phillips drive that prevents cam-out and ensures secure installation
• Optimal flush mounting with standard flat head profile and 82° countersink angle for smooth surface finishes
• Maximum holding power achieved through full threading along the entire 5" length for superior grip strength
• Reliable coarse thread engagement with 3/8"-16 UNC configuration that resists vibration loosening in heavy-duty applications
• Industry compliance assurance meeting ASME B18.6.3 standards and RoHS 3 regulations for quality and environmental safety

Professional Applications & Engineering Value

These heavy-duty tapping screws are engineered to solve critical fastening challenges in metalworking and industrial assembly. The zinc-plated steel construction provides essential corrosion protection while maintaining high tensile strength for demanding applications. The Type F thread cutting design eliminates the need for pre-tapped holes, significantly reducing installation time and labor costs when working with aluminum, brass, cast iron, and sheet metal. The 3/8"-16 UNC coarse thread configuration ensures rapid installation and superior resistance to vibration-induced loosening, making these 5" fully threaded screws ideal for structural assemblies, machinery frames, and heavy equipment where reliability is paramount. The flat head with 82° countersink angle provides flush mounting capabilities for applications requiring smooth surface profiles.

Specification Summary & Compliance

These tapping screws feature precise 3/8"-16 UNC coarse threads with standard Class 2A tolerances for consistent performance. Manufacturing complies with ASME B18.6.3 specifications (referencing SAE J933 standards) ensuring dimensional accuracy and mechanical properties. The products are RoHS 3 (2015/863/EU) compliant for environmental safety and contain no restricted substances. The zinc-plated surface treatment provides corrosion resistance while the Type F thread cutting design and fully threaded 5" length deliver optimal fastening performance in various metal substrates.