S-92400A250 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Excellent torque transmission and anti-cam-out performance through the external hex drive and 1/4" head width
• Secure, vibration-resistant fastening in plastics thanks to the tri-lobe shank design that forms strong, lasting threads
• Simplified installation and reduced assembly time with fully threaded design and compatibility with standard No. 29 drill bits
• High thread engagement and pull-out resistance from 16 TPI precision threading and thread forming action
• Reliable compliance for industrial use meeting RoHS 3 and REACH environmental and safety standards
• Versatile plastic assembly solution with blunt tip design that minimizes material cracking during installation

Professional Applications & Engineering Value

These zinc-plated steel TRS thread forming screws deliver exceptional engineering value in plastic fastening applications where material integrity is critical. The unique tri-lobe shank cross-section displaces plastic material during installation, creating strong, permanent threads without cutting away material - eliminating chips and reducing stress concentrations. This thread forming tapping method provides superior resistance to vibration loosening and pull-out forces compared to conventional fasteners. The external hex drive style combined with the 1/4" head width ensures maximum torque transmission during installation, while the fully threaded design offers consistent holding power along the entire 3/4" length. Ideal for automotive plastics, electronic enclosures, and industrial plastic assemblies where reliable, long-term fastening performance is essential.

Specification Summary & Compliance

This No. 8 x 3/4" tapping screw features precision 16 TPI right-hand threads with 0.164" thread diameter, manufactured to industry standards for thread forming applications in plastics. The screw requires a No. 29 drill bit (0.136" diameter) for proper hole preparation. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.