S-99461A412 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh environments and extended service life in industrial applications.
• Efficient thread forming with Tri-Lobe shank design creates strong, reliable threads in plastic materials without pre-tapping, reducing assembly time and tooling costs.
• Optimized for plastic fastening with a blunt tip and thread forming (TRS) type, minimizing material stress and preventing cracking in plastic components.
• Secure and stable drive engagement provided by the Phillips No. 2 drive, ensuring consistent torque application and reducing the risk of cam-out during installation.
• Full threading along the 3/4" length offers maximum grip and holding power, enhancing joint integrity in various plastic assembly scenarios.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global markets and sensitive applications.
• Precision compatibility with a standard No. 29 drill bit (0.136" diameter), facilitating quick and accurate installation in prepared pilot holes.

Professional Applications & Engineering Value

These 316 Stainless Steel TRS tapping screws are engineered to address common challenges in plastic fastening, such as material brittleness and strip-out. The thread-forming Tri-Lobe shank displaces plastic material to form durable internal threads, eliminating the need for inserts and reducing part count. This design minimizes hoop stress, preventing cracks in sensitive plastic applications like enclosures, automotive trim, and consumer electronics. The corrosion-resistant 316 SS material ensures long-term performance in humid or chemically aggressive environments, while the Phillips drive provides reliable torque transfer for high-volume assembly lines. By combining precise 16 TPI threading and a blunt tip, these screws deliver consistent clamping force and vibration resistance, making them a trusted solution for engineers seeking durability and efficiency in industrial fastener systems.

Specification Summary & Compliance

This product features a No. 8 screw size with a 3/4" length and fully threaded construction. Thread specifications include a 0.164" diameter and 16 threads per inch in a right-hand direction. The screw is designed for use with a No. 29 drill bit (0.136" diameter) and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial and commercial use.