S-99397A077 Length 12 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 via Torx Plus IP6 (T6) drive, providing secure fastening and minimizing tool wear.
• Efficient thread forming in plastics with TRS tri-lobe shank design, creating strong, reliable threads without pre-tapping.
• Consistent performance and secure seating from the pan head style, offering a low-profile, flush finish in plastic assemblies.
• Full-length threading for maximum grip across the entire 12mm length, distributing load evenly and preventing loosening.
• Environmental and regulatory compliance with RoHS 3 and REACH standards, ensuring safe use in various industries.
• Optimized for precision drilling with recommended No. 51 drill bit (0.067"), facilitating accurate installation in plastic components.

Professional Applications & Engineering Value

This M1.91 x 12mm TRS thread forming screw is expertly engineered to address common challenges in plastic assembly, such as material cracking and stripped threads. The tri-lobe shank cross-section and thread forming method displace plastic material to create durable, high-holding-power threads without generating chips, reducing the risk of contamination. Made from 18-8 Stainless Steel, it resists corrosion in environments where moisture or chemicals are present, extending the lifecycle of electronic enclosures, automotive trim, and consumer goods. The Torx Plus drive (IP6/T6) ensures precise torque application, minimizing slippage and improving assembly line efficiency. Ideal for high-volume production, this screw delivers consistent performance in plastic applications, enhancing product integrity and reducing warranty issues.

Specification Summary & Compliance

This metric tapping screw features a blunt tip, fully threaded design with an approximate thread pitch of 0.79 mm, and a standard pan head (4 mm diameter, 1.6 mm height). It conforms to typical thread-forming screw standards for TRS (Thread Rolling Screw) types, ensuring dimensional accuracy suitable for plastic materials. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing adherence to environmental and safety requirements in industrial fastener applications.