S-90485A471 Length 25 mm Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in various industrial environments
• Excellent holding power in plastic materials through thread forming (TRS) design that creates strong, permanent threads without chip removal
• Streamlined installation process with Phillips No. 2 drive and standard flat head profile for flush mounting and efficient assembly
• Optimal thread engagement with fully threaded 25mm length and 1.79mm pitch for maximum pull-out resistance in plastic applications
• Precision compatibility with No. 30 drill bit (0.1285") and 90° countersink angle for perfect alignment and professional finish
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for safe use in regulated industries
• Durable performance with blunt tip design that prevents material damage during installation while maintaining structural integrity

Professional Applications & Engineering Value

These M4 x 25mm tapping screws deliver exceptional engineering value for plastic fastening applications across multiple industries. The 18-8 stainless steel composition provides outstanding corrosion resistance, making these TRS screws ideal for electronics enclosures, automotive components, and outdoor equipment where environmental factors threaten fastener integrity. The thread forming design eliminates the need for pre-tapped holes while creating strong, vibration-resistant connections in thermoplastics and other plastic materials. The Phillips flat head configuration ensures flush mounting for aesthetic applications while the precise 1.79mm thread pitch maximizes surface contact for superior holding strength. These metric screws solve common plastic assembly challenges by preventing material stress cracking and maintaining joint integrity under thermal cycling and mechanical loads.

Specification Summary & Compliance

These M4 tapping screws feature metric dimensions with 25mm length and 8.4mm head diameter, manufactured to precise tolerances for consistent performance. The thread forming (TRS) design follows industry standards for plastic fastening applications with right-hand threading and fully threaded shank. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial use. The screws are engineered for use with No. 30 drill bits and feature standard 90° countersink angles for proper installation in plastic components.