S-99397A182 Length 4 mm Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ensuring long-term reliability in humid or demanding environments
• Enhanced torque transmission and reduced cam-out thanks to the Torx Plus IP6 drive, allowing for higher tightening precision and tool longevity
• Secure, vibration-resistant fastening in plastics achieved through the Tri-Lobe shank design, which forms durable threads without pre-tapping
• Consistent, full-length engagement with fully threaded construction, providing uniform clamping force across the entire screw length
• Streamlined installation process featuring a blunt tip and standard pan head for easy alignment and flush seating in plastic components
• Environmental and regulatory compliance meeting RoHS 3 and REACH standards, ensuring safe use in global markets and sensitive applications
• Precision metric sizing (M2.26 x 4mm) with 0.91mm thread pitch, delivering exact fit and repeatable performance in metric-based assemblies

Professional Applications & Engineering Value

This M2.26 TRS thread forming screw is specifically engineered for high-performance plastic fastening applications, where material integrity and assembly speed are critical. The 18-8 Stainless Steel material offers excellent resistance to oxidation and chemical exposure, making it ideal for electronics enclosures, automotive trim, and consumer appliances. The Tri-Lobe shank cross-section displaces plastic material during installation, creating strong, load-bearing threads that resist loosening under vibration—eliminating the need for inserts or adhesives. Combined with the Torx Plus drive system, installers benefit from higher torque capability and reduced wear on driving tools, streamlining production lines and minimizing rework. Its fully threaded, blunt-tip design ensures smooth entry and consistent holding power in thermoplastics and other non-ferrous materials, providing a reliable, cost-effective alternative to traditional thread-cutting screws.

Specification Summary & Compliance

This screw conforms to standard metric dimensions (M2.26 x 4mm) with an approximate thread pitch of 0.91mm, manufactured with a Class 2A thread fit for consistent engagement. It features a right-hand thread direction, fully threaded shank, and pan head style with a standard rounded profile. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of restricted hazardous substances and safe for use in industrial and consumer products worldwide.