S-90434A208 Length 8 mm Tapping Screws

Key Features & Benefits at a Glance

• Superior plastic retention through thread forming technology that creates strong, vibration-resistant threads without chips
• Enhanced corrosion resistance with zinc-plated steel construction for extended service life in various environments
• Efficient installation with Phillips No. 2 drive and standard flat head profile for quick, flush-mounted fastening
• Optimized plastic fastening featuring 90° countersink angle and blunt tip to prevent material cracking
• Maximum thread engagement with fully threaded design ensuring consistent holding power along the entire 8mm length
• Precision compatibility with 3mm drill bits for accurate hole preparation and secure fastening
• Reliable performance with right-hand threading and 1.79mm pitch providing consistent driving torque

Professional Applications & Engineering Value

These M4 tapping screws are specifically engineered for plastic assembly applications where traditional fastening methods often fail. The thread forming TRS design eliminates the risk of plastic cracking by displacing material rather than cutting it, creating stronger threads that resist vibration loosening. The zinc-plated steel construction provides essential corrosion protection while maintaining the strength required for demanding industrial environments. With their fully threaded configuration and standard flat head profile, these screws deliver flush mounting in plastic enclosures, electronic housings, and automotive plastic components. The combination of 1.79mm thread pitch and blunt tip ensures smooth insertion without material stress concentration, making them ideal for high-volume manufacturing operations where reliability and installation speed are critical.

Specification Summary & Compliance

This metric TRS tapping screw features M4 diameter with 8mm length and 1.79mm approximate thread pitch, designed for use with 3mm drill bits. The screws comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring they meet current industry standards for hazardous substance restrictions. Manufactured with right-hand threading and fully threaded shank configuration, these fasteners provide consistent performance in plastic fastening applications where material compatibility and regulatory compliance are essential requirements.