S-99512A671 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior torque transmission with T20 Torx drive design, reducing cam-out and tool wear for reliable fastening in plastic assemblies.
• Exceptional thread retention through TRS thread forming technology, creating permanent, high-strength threads in plastic materials without chips.
• Enhanced corrosion resistance with Black-Oxide Steel finish, ensuring durability in various industrial environments.
• Reduced installation effort with Tri-Lobe shank cross-section, providing excellent holding power and minimizing stripping in plastic substrates.
• Wide compatibility with standard No. 23 drill bit (0.154" diameter), streamlining the assembly process for plastic components.
• Secure fastening performance from fully threaded No. 8 x 1/2" design with 16 threads per inch, offering consistent grip in plastic applications.
• Environmental compliance assurance meeting RoHS 3 and REACH standards, supporting sustainable manufacturing practices.

Professional Applications & Engineering Value

These No. 8 x 1/2" TRS plastic tapping 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 without cutting, creating robust internal threads that resist loosening under vibration and thermal cycling. Made from Black-Oxide Steel, they provide reliable corrosion resistance in humid or demanding environments. The T20 Torx drive ensures maximum torque application with minimal slippage, ideal for high-volume production lines where speed and precision are critical. Commonly used in electronics enclosures, automotive trim, and consumer products, these screws deliver long-term reliability in plastic fastening applications, reducing maintenance and replacement costs.

Specification Summary & Compliance

This screw features a No. 8 thread diameter (0.164") with 16 threads per inch and right-hand threading, following standard inch measurements for consistent performance. The TRS thread forming design and Tri-Lobe shank ensure precise fit in pre-drilled holes using a No. 23 drill bit (0.154" diameter). Manufactured to meet industry standards for thread-forming screws in plastic, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global markets.