S-90390A132 3/8"-16 x 1 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior torque transmission with T40 Torx drive that prevents cam-out and allows higher tightening forces
• Excellent corrosion resistance from black-phosphate steel coating that extends service life in demanding environments
• Optimal material penetration with thread cutting design that creates strong threads in aluminum, brass, cast iron and sheet metal
• Secure flush installation with 82° countersink angle and flat head design for smooth surface finishing
• Reliable fastening performance through UNC coarse threading that resists vibration loosening
• Full-length gripping power with completely threaded shank that distributes load evenly along the entire length
• Precise installation control with blunt tip design that prevents over-penetration in thin materials

Professional Applications & Engineering Value

These 3/8"-16 thread cutting tapping screws are engineered to solve common fastening challenges in metalworking applications. The black-phosphate steel construction provides essential corrosion protection while maintaining high tensile strength. The T40 Torx drive system delivers exceptional torque transmission, eliminating the stripping issues common with Phillips drives in high-torque scenarios. As F-type tapping screws with thread cutting capability, they create their own mating threads in various metals without requiring pre-tapped holes, significantly reducing installation time and labor costs. The 82° countersink angle ensures proper seating in standard countersunk holes, while the fully threaded design maximizes pull-out resistance in aluminum assemblies, brass components, cast iron machinery, and sheet metal enclosures where vibration resistance is critical.

Specification Summary & Compliance

These industrial fasteners feature UNC coarse threading (3/8"-16) with Class 2A tolerance for reliable engagement in various materials. The 1½" length and 0.717" head diameter provide optimal proportions for standard applications. Manufactured to industry standards for thread cutting tapping screws with right-hand threading and round shank cross-section. The blunt tip design and standard flat head profile ensure compatibility with common installation tools and procedures. These screws comply with relevant industrial specifications for heavy-duty fastening applications in metal fabrication and assembly operations.