S-90434A166 Length 20 mm Tapping Screws

Key Features & Benefits at a Glance

• Superior holding power in plastic through thread-forming TRS design that creates strong, permanent threads without pre-tapping
• Corrosion-resistant zinc-plated steel construction ensures long-term durability in various industrial environments
• Efficient Phillips No. 2 drive system provides reliable torque transmission and prevents cam-out during installation
• 90° countersink flat head design allows for flush mounting and clean finished appearance in plastic assemblies
• Precise 3mm drill bit compatibility simplifies installation planning and ensures proper hole sizing
• Full 20mm threading delivers maximum engagement and pull-out resistance in plastic materials
• Environmental compliance assurance with RoHS 3 and REACH standards for sustainable manufacturing practices

Professional Applications & Engineering Value

These M4 TRS tapping screws are specifically engineered to address common challenges in plastic assembly applications, where traditional fastening methods often lead to material stress cracking or insufficient holding power. The thread-forming technology creates precise mating threads in plastic substrates through material displacement rather than cutting, eliminating chip formation and providing superior resistance to vibration loosening. The zinc-plated steel construction offers excellent corrosion protection while maintaining the necessary strength for demanding industrial environments. The combination of Phillips drive and flat head profile ensures easy installation and flush finishing, making these metric fasteners ideal for electronics enclosures, automotive plastic components, and consumer product assemblies where both performance and aesthetics matter.

Specification Summary & Compliance

These metric TRS tapping screws feature M4 diameter with 20mm length and fully threaded right-hand thread direction. The thread-forming design operates with standard 3mm drill bit preparation and incorporates a 90° countersink angle for proper seating. Manufacturing and material compliance includes full adherence to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring these fasteners meet current regulatory requirements for hazardous substance restrictions.