S-99397A121 Length 3 mm Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-term durability in various industrial environments.
• Enhanced torque transmission and reduced cam-out thanks to the Torx Plus IP5 drive, allowing for reliable, high-torque fastening without tool slippage.
• Secure, vibration-resistant fastening in plastic materials due to the thread-forming TRS design with tri-lobe shank, which creates strong, permanent threads without pre-tapping.
• Consistent, flush installation with a standard pan head profile and blunt tip, minimizing damage to plastic components during assembly.
• Precise 0.6 mm thread pitch and M1.59 screw size for accurate fit and reliable performance in tight-spaced plastic applications.
• Full compliance with RoHS 3 and REACH regulations, ensuring environmental safety and meeting international standards for hazardous substances.
• Optimized for use with No. 54 drill bit (0.055"), simplifying installation and reducing preparation time in plastic assembly processes.

Professional Applications & Engineering Value

This M1.59 x 3mm zinc-plated steel TRS tapping screw is engineered to address common challenges in plastic assembly, such as material cracking and loose fasteners under vibration. The thread-forming (TRS) design with tri-lobe shank displaces plastic material to form strong, load-bearing threads, eliminating the need for separate inserts and reducing assembly steps. The Torx Plus IP5 drive provides superior torque transfer, minimizing the risk of drive damage and ensuring consistent clamping force in automated or manual applications. With a fully threaded, right-hand configuration and blunt tip, it offers precise alignment and prevents over-penetration in delicate plastic components, making it ideal for electronics, automotive trim, and consumer goods where reliability and environmental compliance (RoHS 3, REACH) are critical.

Specification Summary & Compliance

This screw features a metric M1.59 size with an approximate thread pitch of 0.6 mm and fully threaded, right-hand tri-lobe shank for thread-forming applications in plastic. It adheres to standard dimensional tolerances for precision fit and is manufactured to comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from restricted hazardous substances. The zinc-plated steel material and Torx Plus IP5 drive meet industry requirements for corrosion resistance and drive performance.