S-90434A178 Length 3/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior holding power in plastic materials due to thread-forming Tri-Lobe shank design that displaces material without creating chips
• Enhanced corrosion resistance with zinc-plated steel construction for extended service life in various environments
• Secure and efficient installation with Phillips No. 2 drive that prevents cam-out during torque application
• Optimal flush mounting thanks to standard flat head profile with 82° countersink angle for clean finished appearances
• Maximum thread engagement through fully threaded design that provides consistent clamping force along entire length
• Simplified installation process with compatibility for standard 1/8" drill bits, reducing preparation time
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe industrial usage

Professional Applications & Engineering Value

These TRS tapping screws are specifically engineered to address common fastening challenges in plastic applications where traditional fasteners often fail. The thread-forming Tri-Lobe shank technology creates strong, permanent threads in plastic materials without generating debris that could compromise the assembly. This design prevents stress cracking and material failure common with standard screws. The zinc-plated steel construction provides essential corrosion protection in environments where moisture or chemicals are present, while the Phillips drive ensures reliable installation without the need for specialized tools. These self-tapping screws are ideal for plastic fabrication, electronic enclosures, automotive components, and industrial equipment where vibration resistance and long-term reliability are critical.

Specification Summary & Compliance

This No. 6 x 3/8" TRS tapping screw features a 0.138" thread diameter with 19 TPI (threads per inch) and right-hand threading. The screw meets standard dimensional requirements for thread forming applications in plastic materials. Manufacturing and material compliance includes RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant certifications, ensuring adherence to international environmental and safety standards for industrial components.