S-99512A612 Length 5/16" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-lasting performance in various industrial environments.
• Enhanced torque transfer and reduced cam-out thanks to the T8 Torx drive, allowing for secure and efficient installation.
• Reliable thread forming in plastics with the tri-lobe shank design, minimizing stress and preventing material cracking during assembly.
• Consistent, full-length engagement provided by fully threaded design and 28 TPI, ensuring strong, vibration-resistant fastening.
• Easy alignment and broad bearing surface from the rounded pan head, distributing load evenly and improving assembly speed.
• Compliance with strict environmental standards including RoHS 3 and REACH, making them safe for global industrial use.
• Optimized for plastic applications with blunt tip and thread forming method, reducing installation effort and improving joint integrity.

Professional Applications & Engineering Value

These No. 2 zinc-plated steel T8 Torx TRS thread forming screws are engineered to address common challenges in plastic fastening, such as material stress and thread stripping. The tri-lobe shank cross-section displaces plastic material during installation, creating strong, permanent threads without pre-tapping, which reduces assembly time and tooling costs. The T8 Torx drive ensures maximum torque application with minimal slippage, ideal for high-volume production lines. Made from zinc-plated steel, these screws offer excellent durability and corrosion resistance, making them suitable for automotive, electronics, and appliance industries where reliable plastic fastening is critical. Their fully threaded design and 28 TPI provide consistent holding power, preventing loosening under vibration and thermal cycling.

Specification Summary & Compliance

This product features a No. 2 screw size with a thread diameter of 0.086" and length of 5/16", designed for use with a 5/64" drill bit. It includes a right-hand thread, fully threaded tri-lobe shank, and standard rounded pan head for easy installation. Manufactured to precise dimensional standards for reliable performance in thread forming applications. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for industrial use worldwide.