S-90380A291 Length 1 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
• Excellent thread-forming capability in plastic materials through the tri-lobe shank design, ensuring secure, vibration-resistant fastening
• Enhanced driving efficiency with No. 2 Phillips drive, reducing cam-out and tool slippage during installation
• Maximum material engagement from fully threaded design and 19 TPI, providing consistent holding power along the entire screw length
• Reduced cracking risk in plastic components thanks to blunt tip design and thread forming (TRS) tapping method
• Broad compatibility with standard 1/8" drill bits, simplifying installation processes and reducing preparation time
• Regulatory compliance assurance meeting RoHS 3 and REACH standards, ensuring safe use in regulated industries

Professional Applications & Engineering Value

These zinc-plated steel TRS tapping screws deliver exceptional performance in plastic assembly applications where traditional fasteners often fail. The specialized tri-lobe shank cross-section and thread forming design create precise, secure threads in plastic materials without requiring pre-tapped holes, eliminating stripping issues and reducing installation time. The 0.138" thread diameter with 19 TPI provides optimal balance between thread engagement and material integrity, while the pan head style with Phillips drive offers reliable clamping force distribution. Engineered specifically for plastic fastening applications, these screws prevent material cracking and maintain joint integrity under vibration and thermal cycling conditions common in automotive, electronics, and industrial equipment assemblies.

Specification Summary & Compliance

These No. 6 x 1-1/2" TRS tapping screws feature precision 0.138" thread diameter with 19 threads per inch and fully threaded design for maximum engagement. Manufactured to exacting standards with Class 2A thread tolerances for consistent performance. The zinc-plated steel construction provides durable corrosion protection. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.