S-99461A951 Length 8 mm Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in demanding environments
• Efficient thread-forming design creates strong, permanent threads in plastic materials without pre-tapping requirements
• Optimized Phillips drive system (No. 1 size) ensures reliable torque transmission and reduces cam-out during installation
• Secure fastening without material damage thanks to the blunt tip design that prevents plastic splitting or cracking
• Consistent 1.57mm thread pitch provides uniform load distribution and vibration resistance in plastic assemblies
• Full threading along the 8mm length maximizes grip strength and pull-out resistance in plastic applications
• Environmental compliance assurance with RoHS 3 and REACH regulations for global industrial applications

Professional Applications & Engineering Value

These M3.5 TRS thread-forming screws deliver exceptional engineering value in plastic fastening applications where material integrity is paramount. The 18-8 stainless steel construction provides excellent corrosion resistance while the thread-forming design eliminates the need for separate tapping operations, reducing assembly time and costs. The Phillips pan head with No. 1 drive size offers reliable installation with standard tools, while the blunt tip prevents plastic material damage during insertion. These metric tapping screws are specifically engineered for plastic components in electronics, automotive trim, consumer products, and industrial equipment where vibration resistance and long-term reliability are critical requirements.

Specification Summary & Compliance

This M3.5 x 8mm TRS tapping screw features full threading with 1.57mm pitch and standard metric tolerances. The screw utilizes thread-forming technology specifically designed for plastic materials, requiring No. 34 drill bit (0.111") for proper hole preparation. Manufactured from 18-8 stainless steel with Phillips pan head drive, these fasteners comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring they meet international standards for industrial applications in plastic assembly operations.