S-99397A074 Length 10 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, providing secure installation and minimizing tool wear.
• Excellent holding power in plastic materials due to the TRS thread forming design, which creates strong, reliable threads without generating chips.
• Optimized for precise plastic assembly with a tri-lobe shank cross-section that prevents screw rotation during installation for consistent performance.
• Full threading for maximum grip length along the entire 10mm length, ensuring a secure fastening in various plastic thicknesses.
• Pan head design with standard rounded profile offers a low-profile, finished appearance and good bearing surface.
• Compliance with strict environmental regulations including RoHS 3 and REACH, making it suitable for global markets and sensitive applications.

Professional Applications & Engineering Value

This M1.91 x 10mm TRS thread forming screw is engineered to address common challenges in plastic assembly, such as strip-out and weak thread engagement. The tri-lobe shank and thread forming (TRS) tapping method displace plastic material to form durable, high-strength mating threads, eliminating the need for pre-tapped holes and reducing assembly steps. Manufactured from 18-8 Stainless Steel, it provides excellent corrosion resistance, crucial for electronics enclosures, automotive interiors, and outdoor equipment where moisture exposure is a concern. The Torx Plus IP6 drive ensures efficient torque application, minimizing the risk of driver slippage and damage to the screw head or workpiece, thereby increasing production line efficiency and reducing waste in high-volume plastic fastener applications.

Specification Summary & Compliance

This metric screw features a size of M1.91 x 10mm with an approximate thread pitch of 0.79mm, a blunt tip, and is fully threaded. It has a pan head with a standard rounded profile, a head diameter of 4mm, and is designed for use with a No. 51 drill bit (0.067" diameter). The screw conforms to typical dimensional tolerances for precision tapping screws and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free of hazardous substances and suitable for use in various industrial and consumer products.