S-90485A472 Length 30 mm Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-lasting performance in humid or demanding environments.
• Efficient thread forming design creates strong, permanent threads in plastic materials without pre-tapping, reducing assembly time and tooling costs.
• Secure flush mounting with a standard flat head and 90° countersink angle for a smooth, professional finish that prevents snagging.
• Reliable driving control provided by the No. 2 Phillips drive, minimizing cam-out and ensuring consistent torque application.
• Full threading along the 30mm length offers maximum grip and uniform stress distribution in plastic assemblies.
• Compliance with RoHS 3 and REACH regulations guarantees safe, environmentally responsible use in various industrial applications.
• Precise M4 metric sizing with 1.79mm pitch ensures compatibility with standard plastic components and drill bits (No. 30 / 0.1285").

Professional Applications & Engineering Value

These M4 TRS tapping screws are engineered specifically for plastic applications, where traditional fasteners may strip or fail. The thread forming (TRS) design displaces material to create robust, high-holding-power threads without generating chips, eliminating cleanup and reducing the risk of contamination in sensitive assemblies. Made from 18-8 stainless steel, they resist rust and corrosion, making them ideal for electronics enclosures, automotive trim, and outdoor equipment. The Phillips flat head with a 90° countersink sits flush, providing a clean aesthetic and preventing interference. This combination of material durability and efficient thread forming solves common issues like loosening under vibration and material fatigue, ensuring reliable, long-term performance in industrial settings.

Specification Summary & Compliance

This product features a M4 x 30mm fully threaded shank with an approximate thread pitch of 1.79mm and a blunt tip for controlled insertion. It adheres to standard metric dimensions, including a head diameter of 8.4mm and height of 2.9mm, ensuring precise fit. The screw is manufactured for use with a No. 30 drill bit (0.1285" diameter) and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for global industrial and consumer applications.