S-90380A273 Length 7/16" Tapping Screws

Key Features & Benefits at a Glance

• Superior vibration resistance with the Tri-Lobe shank cross-section that prevents loosening in plastic assemblies
• Exceptional corrosion protection from zinc-plated steel construction, ensuring long-term reliability in industrial environments
• Reduced installation stress thanks to the thread forming (TRS) design that creates strong, clean threads without chip removal
• Optimized for plastic materials with blunt tip design to prevent material cracking during insertion
• Enhanced driving efficiency with Phillips No. 1 drive that provides reliable torque transfer and prevents cam-out
• Maximum holding power through fully threaded design that ensures complete engagement along the entire fastener length
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global manufacturing applications

Professional Applications & Engineering Value

These zinc-plated steel TRS tapping screws are specifically engineered for plastic assembly applications where traditional fasteners fail. The thread forming design eliminates material chipping and stress concentration points that commonly cause plastic failure. With 20 TPI thread pitch and Tri-Lobe shank cross-section, these screws create permanent, high-retention threads that withstand vibration and thermal cycling. The Phillips drive system ensures consistent installation torque, while the blunt tip prevents material splitting - making them ideal for electronic enclosures, automotive trim, and consumer products where plastic integrity is critical. The combination of thread forming technology and corrosion-resistant zinc plating delivers reliable performance in demanding industrial environments.

Specification Summary & Compliance

This No. 4-20 x 7/16" tapping screw features precision right-hand threads with 0.112" thread diameter and fully threaded construction for maximum engagement. Manufactured to industry standards with pan head style and Phillips No. 1 drive compatibility. Designed for use with No. 37 drill bit (0.104" diameter) in plastic materials. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for global manufacturing applications.