S-95893A238 Length 20 mm Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ensuring long-term reliability in various environments.
• High-torque driving capability via the T20 Torx drive, reducing cam-out and tool wear for efficient assembly.
• Excellent thread retention in plastics through the TRS thread forming design, which displaces material without cutting, creating strong, vibration-resistant threads.
• Flush, professional finish with a standard flat head and 90° countersink angle, allowing the screw to sit seamlessly in prepared holes.
• Full-length threading (M4 x 20mm) provides consistent grip along the entire shank, maximizing holding power in plastic substrates.
• Blunt tip design minimizes risk of material cracking or damage during installation in plastic components.
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and suitability for global markets.

Professional Applications & Engineering Value

This M4 thread forming screw is specifically engineered for plastic fastening applications, where traditional threaded fasteners may strip or fail. Made from 18-8 Stainless Steel, it offers excellent resistance to rust and corrosion, making it ideal for electronics enclosures, automotive trim, and outdoor equipment. The TRS thread forming action cold-forms mating threads in plastic, eliminating chips and reducing stress concentration. Combined with a T20 Torx drive and flat head profile, it ensures secure, tamper-resistant installations with a clean aesthetic. The fully threaded design and blunt tip further prevent material splitting, providing reliable performance in brittle or soft plastics.

Specification Summary & Compliance

This M4 x 20mm screw features a fully threaded right-hand design with an approximate thread pitch of 1.79 mm, head diameter of 8.4 mm, and standard flat head with 90° countersink angle. It is designed for use with a No. 30 drill bit (0.1285" diameter) for optimal hole preparation in plastics. Manufactured to common industrial standards for thread forming screws, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for various applications.