S-99397A441 Length 8 mm Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Enhanced torque transmission and reduced cam-out using the Torx Plus IP10 drive, ensuring secure fastening and minimal tool wear.
• Excellent thread-forming capability in plastics with the TRS tri-lobe shank design, creating strong, reliable threads without pre-tapping.
• Optimized for plastic assemblies with a blunt tip and fully threaded M3.12 size, preventing material cracking and ensuring consistent hold.
• Wide compatibility and ease of installation using a standard No. 37 drill bit (0.104"), streamlining your assembly process.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safe and sustainable use in global markets.
• Secure and flush fastening with the rounded pan head design, providing a low-profile finish and even pressure distribution.

Professional Applications & Engineering Value

This M3.12 TRS tapping screw is engineered specifically for plastic applications, where traditional fasteners often cause stress cracking or strip threads. The thread forming action of the tri-lobe shank displaces material to create precise, high-strength mating threads, eliminating the need for inserts and reducing assembly steps. Made from 18-8 stainless steel, it offers exceptional resistance to corrosion and oxidation, making it suitable for electronics enclosures, automotive components, and outdoor equipment. The Torx Plus IP10 drive ensures maximum torque transfer with minimal slippage, protecting the screw head and drive tool during high-speed assembly. This combination of material durability and advanced drive technology delivers reliable performance in automated production environments, reducing downtime and improving joint integrity.

Specification Summary & Compliance

This screw conforms to standard metric (M3.12) dimensions with an approximate thread pitch of 1.27 mm and a fully threaded right-hand thread design. The rounded pan head features a diameter of 5.6 mm and height of 2.4 mm. It is designed for use with a No. 37 drill bit (0.104" diameter) and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances and safe for industrial use.