S-90380A276 Length 1 1/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-lasting performance in various environments
• Reliable thread-forming action with TRS tri-lobe shank design, creating strong, vibration-resistant threads in plastic materials without pre-tapping
• Easy installation and removal thanks to Phillips No. 1 drive, providing secure tool engagement and reducing cam-out risks
• Optimal material displacement with fully threaded blunt tip design, minimizing stress cracking in plastic assemblies
• Wide compatibility with standard No. 37 drill bits (0.104" diameter), streamlining your production process
• Secure fastening performance from pan head style, offering excellent clamp force distribution and flush surface finish
• Environmental compliance assurance meeting RoHS 3 and REACH standards, supporting sustainable manufacturing practices

Professional Applications & Engineering Value

These No. 4 TRS thread-forming screws deliver exceptional value in plastic assembly applications where traditional fastening methods fall short. The zinc-plated steel construction provides essential corrosion protection while maintaining the strength required for durable plastic joints. The innovative tri-lobe shank cross-section and thread forming technology create precise, high-retention threads in plastic substrates without generating chips, eliminating contamination risks in sensitive assemblies. The fully threaded 1-1/8" length ensures maximum engagement depth, while the Phillips drive facilitates efficient installation in automated or manual production environments. These tapping screws are engineered to prevent material cracking and stripping in thermoplastics and other plastic composites, making them ideal for electronics enclosures, automotive trim, and consumer product assemblies where reliability and appearance matter.

Specification Summary & Compliance

These inch-system tapping screws feature a No. 4 size with 0.112" thread diameter and 20 threads per inch, manufactured to standard TRS (Thread Rolling Screw) specifications for plastic applications. The pan head style with 0.219" diameter and 0.08" height provides optimal bearing surface, while the tri-lobe shank ensures proper thread formation. The screws are designed for use with No. 37 drill bits (0.104" diameter) and comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring they meet current industry standards for hazardous substance restrictions.