S-90390A134 3/8"-16 x 2 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-phosphate steel coating for extended service life in demanding industrial environments
• Enhanced torque transmission through T40 Torx drive design, minimizing cam-out and tool slippage during installation
• Efficient thread cutting performance with Type F tapping design that creates precise mating threads in aluminum, brass, cast iron, and sheet metal
• Optimal flush mounting with standard flat head profile and 82° countersink angle for smooth surface finishes
• Maximum holding power through full-length UNC coarse threading that ensures superior grip across the entire fastener length
• Simplified installation process with compatible T drill bit (0.358") specifications for precise hole preparation
• Reliable performance in various materials specifically engineered for aluminum, brass, cast iron, and sheet metal applications

Professional Applications & Engineering Value

These 3/8"-16 T40 flat head tapping screws deliver exceptional engineering value in industrial fastening applications where reliable thread formation is critical. The black-phosphate steel construction provides superior corrosion protection, while the Type F thread cutting design eliminates the need for pre-tapped holes, significantly reducing installation time and labor costs. The T40 Torx drive system ensures maximum torque transfer without stripping, making these screws ideal for high-production environments working with aluminum, brass, cast iron, and sheet metal components. The 82° countersink angle and flat head profile create seamless surface finishes, while the UNC coarse threading maintains secure fastening even in vibrating applications, preventing loosening and maintaining structural integrity in construction and manufacturing settings.

Specification Summary & Compliance

These industrial-grade tapping screws feature precise 3/8"-16 UNC coarse thread specifications with Class 2A tolerance standards, ensuring consistent performance and interchangeability. The Type F thread cutting design follows established industrial standards for self-tapping fasteners, while the black-phosphate surface treatment provides reliable corrosion protection. Manufactured to meet industry specifications for heavy-duty fasteners, these screws comply with relevant industrial standards and are suitable for various engineering applications requiring robust, reliable fastening solutions in metal assemblies.