S-92400A370 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-lasting performance in demanding environments.
• Enhanced holding power in plastic materials due to the thread forming (TRS) design and tri-lobe shank, reducing the risk of pull-out and loosening.
• Efficient installation and removal with an external hex drive and hex head, allowing for high torque application and quick assembly.
• Reliable thread engagement with fully threaded 3/4" length and No. 12 size, providing consistent fastening across the entire shank.
• Reduced material stress as a thread forming screw, creating strong threads without cutting, which minimizes cracking in plastic substrates.
• Compliance with environmental regulations, meeting RoHS 3 and REACH standards for safe and sustainable use in various industries.
• Optimized for use with 3/16" drill bits, simplifying hole preparation and ensuring precise fit in plastic applications.

Professional Applications & Engineering Value

These No. 12 zinc-plated steel TRS tapping screws are engineered to address common challenges in plastic assembly, such as material brittleness and vibration-induced failure. The thread forming technology and tri-lobe shank cross-section work together to displace plastic material, forming secure, high-strength threads that resist back-out under dynamic loads. This design eliminates the need for pre-tapped holes, speeding up production while reducing the risk of stress cracks—a critical advantage when fastening into thermoplastics or composites. With a blunt tip and fully threaded profile, these screws ensure consistent clamping force, making them ideal for heavy-duty applications in automotive, electronics, and consumer goods where corrosion-resistant and reliable fastening is essential.

Specification Summary & Compliance

This thread forming screw features a No. 12 size with a 0.216" thread diameter and approximately 11 threads per inch, adhering to standard inch measurements for precise fit. The hex head and external hex drive facilitate easy installation with common tools, while the 3/4" length and fully threaded design ensure uniform engagement. Manufactured from zinc-plated steel, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial use without hazardous substances.