S-97975A115 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 410 stainless steel construction, ensuring long-lasting performance in various industrial environments.
• Efficient thread forming with DST design that creates strong, reliable threads in plastic materials without pre-tapping, reducing assembly time.
• Secure fastening thanks to the Phillips drive and pan head, providing excellent torque transfer and preventing cam-out during installation.
• Maximum holding power from the fully threaded, 24 TPI pattern and blunt tip, which minimizes material stress and prevents cracking in plastic applications.
• Precision compatibility with No. 44 drill bits (0.086" diameter), ensuring easy, accurate installation and consistent results.
• Environmental compliance meeting RoHS 3 and REACH standards, making them safe for use in regulated industries and global markets.
• Versatile right-hand threading for standard assembly processes, enhancing usability across various plastic fastening scenarios.

Professional Applications & Engineering Value

These No. 4 x 1/2" 410 stainless steel DST thread forming screws are engineered to address common challenges in plastic assembly, such as material cracking and weak thread retention. The thread forming design displaces plastic material to create durable, high-strength threads without generating chips, reducing the risk of contamination and improving joint integrity. Made from 410 stainless steel, they offer excellent resistance to corrosion and wear, ensuring reliability in demanding environments like automotive, electronics, and consumer goods. The Phillips drive and pan head provide secure, efficient installation, while the blunt tip and full threading minimize stress concentration, making them ideal for brittle or soft plastics where vibration resistance and long-term performance are critical.

Specification Summary & Compliance

This product features precise dimensions including a thread diameter of 0.112", length of 1/2", and 24 threads per inch, adhering to standard inch measurements for consistent performance. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use. The thread forming method and fully threaded design follow established fastening principles, providing reliable results in plastic applications with recommended No. 44 drill bit sizing for optimal fit.