S-90390A138 6-32 x 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
• Enhanced torque transmission through T10 Torx drive design, reducing cam-out and tool slippage during installation
• Flush mounting capability with standard flat head profile and 82° countersink angle for clean, professional finishes
• Excellent thread-forming performance with thread cutting design that creates strong, permanent threads in aluminum, brass, cast iron and sheet metal
• Reliable fastening in various materials using UNC coarse threads that provide quick installation and strong holding power
• Full-length threading ensures maximum grip along the entire 3/4" length for superior load distribution
• Environmental compliance with RoHS 3 standards, meeting international regulatory requirements

Professional Applications & Engineering Value

These zinc-plated steel tapping screws deliver exceptional value in metal fabrication and assembly operations. The thread cutting design eliminates the need for pre-tapped holes, significantly reducing installation time and labor costs in aluminum, brass, cast iron, and sheet metal applications. The T10 Torx drive system provides superior torque transmission compared to traditional drive types, minimizing fastener damage and ensuring consistent clamping force. The flat head profile with 82° countersink creates seamless, flush surfaces that meet aesthetic requirements while preventing snagging in finished products. Engineered with UNC coarse threads and full threading, these screws offer rapid installation and reliable performance in high-vibration environments common in industrial settings.

Specification Summary & Compliance

This 6-32 UNC thread cutting screw features precise dimensional accuracy with standard inch system measurements including 3/4" length, 0.262" head diameter, and T10 Torx drive size. The fastener complies with RoHS 3 (2015/863/EU) regulations, ensuring environmental safety standards are met. Manufactured with thread cutting (Type F) design for optimal performance in various metals, the screw requires a #31 drill bit (0.12" diameter) for proper hole preparation. The right-hand thread direction and coarse thread spacing provide efficient installation in accordance with standard industrial practices.