S-99397A677 Length 8 mm Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
• Maximum torque transmission and reduced cam-out through Torx Plus IP15 drive system, ensuring secure fastening and preventing tool slippage
• Excellent thread-forming capability in plastic materials with Tri-Lobe shank design that creates strong, permanent threads without pre-tapping
• Enhanced material displacement control with blunt tip design that minimizes stress cracking in plastic components during installation
• Reliable full-length engagement through fully threaded 8mm length with 1.34mm pitch for consistent holding power across the entire fastener
• Low-profile pan head design provides flush mounting while maintaining sufficient drive engagement for high-torque applications
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

These M3.63 TRS tapping screws deliver exceptional engineering value in plastic fastening applications where material integrity and joint reliability are critical. The thread-forming TRS design with Tri-Lobe shank cross-section eliminates the need for pre-tapped holes, reducing assembly time and costs while creating stronger threads through controlled material displacement. The zinc-plated steel construction provides necessary corrosion protection for industrial environments, while the Torx Plus IP15 drive system ensures high torque transmission without stripping, making them ideal for automated assembly processes. These metric screws are specifically engineered to prevent plastic cracking and stress failure, offering reliable performance in electronics enclosures, automotive plastic components, and consumer products where plastic fasteners must maintain structural integrity under vibration and thermal cycling conditions.

Specification Summary & Compliance

This M3.63 x 8mm tapping screw features precision right-hand threads with approximate 1.34mm pitch and fully threaded design for consistent engagement. The fastener incorporates standard pan head style with 7mm diameter and 2.6mm height profile, compatible with T15/Torx Plus IP15 drive systems. Manufactured to thread-forming TRS standards with Tri-Lobe shank cross-section and blunt tip for plastic applications requiring 1/8" (0.125") drill preparation. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial use.