S-99512A617 Length 3/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior torque transmission with T8 Torx drive design prevents cam-out and tool slippage during installation
• Excellent corrosion resistance provided by zinc-plated steel construction for extended service life in various environments
• Reliable thread forming capability with TRS Tri-Lobe shank creates strong, permanent threads in plastic materials without chips
• Secure fastening in plastic applications through fully threaded design that maximizes engagement and pull-out resistance
• Streamlined assembly process with standardized pan head profile and blunt tip for easy alignment and insertion
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for safe use in regulated industries
• Optimized for plastic substrates with precise No. 3 diameter and 24 TPI thread pitch specifically engineered for plastic fastening

Professional Applications & Engineering Value

These No. 3 x 3/8" zinc-plated steel T8 Torx TRS plastic tapping screws are engineered specifically for plastic assembly applications where traditional fastening methods often fail. The thread forming design with Tri-Lobe shank cross-section displaces plastic material rather than cutting it, creating zero clearance threads that significantly improve pull-out resistance and vibration resistance. This thread forming tapping method eliminates chip formation common in threaded applications, preventing contamination in sensitive electronic enclosures, automotive components, and consumer products. The combination of zinc-plated steel material and T8 Torx drive style ensures consistent installation torque without stripping, while the fully threaded configuration provides maximum holding power along the entire fastener length, making these plastic tapping screws ideal for high-volume manufacturing environments requiring reliability and efficiency.

Specification Summary & Compliance

These thread forming screws feature precise dimensional specifications including No. 3 screw size (0.099" thread diameter), 3/8" length, 24 TPI thread pitch, and standard pan head profile with 0.193" diameter. Manufactured to TRS (Thread Rolling Screw) standards with Tri-Lobe shank cross-section for optimal performance in plastic materials. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial applications. The thread forming design follows industry-standard practices for plastic fastening applications.