S-90086A657 3/8"-16 x 2" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-lasting performance in demanding industrial environments
• Effortless installation in aluminum, brass, cast iron, and sheet metal thanks to the thread-cutting (Type F) design that eliminates the need for pre-tapped holes
• Secure flush mounting with a standard flat head and 82° countersink angle for a clean, professional finish that prevents snagging
• High torque transfer and reduced cam-out with the No. 4 Phillips drive, providing reliable fastening during high-stress assembly
• Maximum thread engagement and holding power from the fully threaded, coarse (UNC) 3/8"-16 design, ideal for heavy-duty applications
• Enhanced durability and compliance with ASME B18.6.3 and RoHS 3 standards, guaranteeing material quality and environmental safety
• Optimized for use with T drill bit (0.358" diameter) ensuring precise hole preparation and reducing installation time

Professional Applications & Engineering Value

These zinc-plated steel tapping screws are engineered to solve common fastening challenges in metalworking and construction. The thread-cutting (Type F) design with a blunt tip allows for direct installation into aluminum, brass, cast iron, and sheet metal without pre-tapping, significantly reducing labor and assembly time. The flat head with an 82° countersink angle ensures a seamless, flush finish that minimizes protrusion risks in dynamic environments. Made from robust zinc-plated steel, these screws resist corrosion, making them ideal for both indoor and outdoor industrial applications. Fully compliant with ASME B18.6.3, they deliver consistent performance in high-vibration settings, providing reliable, long-term fastening solutions for machinery, structural frames, and metal enclosures.

Specification Summary & Compliance

This product adheres to UNC coarse thread standards with a 3/8"-16 thread size and is manufactured to ASME B18.6.3 specifications (referencing SAE J933). The screws feature a standard Class 2A thread fit for reliable engagement and are fully compliant with RoHS 3 (2015/863/EU) environmental regulations. Designed for use with a T drill bit (0.358" diameter), they ensure precise hole alignment and optimal performance in specified materials.