S-90380A294 Length 7/16" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in various environments
• Excellent vibration resistance due to the TRS thread forming design, preventing loosening in plastic assemblies
• High driving efficiency with No. 2 Phillips drive, reducing installation time and tool wear
• Maximum material engagement from the fully threaded tri-lobe shank, ensuring superior pull-out strength in plastics
• Reduced risk of material cracking with a blunt tip and thread forming method, ideal for brittle plastic substrates
• Wide compatibility with standard No. 23 drill bits (0.154" diameter), simplifying hole preparation
• Secure regulatory compliance meeting RoHS 3 and REACH standards for safe use in industrial and consumer products

Professional Applications & Engineering Value

This No. 8 x 7/16" zinc-plated steel TRS tapping screw is engineered specifically for plastic applications, where traditional fasteners often fail. The thread forming (rather than cutting) action of the tri-lobe shank displaces plastic material to create strong, permanent internal threads without generating chips. This eliminates the risk of debris interfering with sensitive components in electronics, automotive trim, or appliance assemblies. The zinc-plated finish provides a protective barrier against oxidation and corrosion, ensuring long-term reliability even in humid or mildly corrosive environments. With its Phillips drive and pan head design, it offers a flush finish and efficient installation, making it a preferred choice for high-volume manufacturing lines requiring consistent, reliable performance in thermoplastics and other polymer-based materials.

Specification Summary & Compliance

This screw adheres to standard inch system dimensions: No. 8 thread diameter (0.164"), 16 TPI, and 7/16" length with a Class 2A thread fit for general purpose use. The TRS (Thread Rolling Screw) type is manufactured for thread forming in plastics, requiring a No. 23 drill bit (0.154" diameter) for proper hole preparation. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances and safe for industrial and consumer applications.