S-90064A370 Length 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
• Efficient installation with self-drilling tip that eliminates pre-drilling requirements, saving labor time and costs
• Enhanced vibration resistance through thread forming technology that creates stronger, more secure connections in steel and sheet metal
• Simplified assembly with external hex drive design allowing for high-torque application using standard tools
• Improved load distribution from the integrated flange design that provides larger bearing surface area
• Optimized for sheet metal applications with drilling capability through materials up to 0.098" thickness
• Reliable performance with BSD thread forming design that ensures tight, secure fastening in various metal substrates

Professional Applications & Engineering Value

This No. 8 zinc-plated steel flanged tapping screw delivers exceptional engineering value for professionals working with steel and sheet metal applications. The combination of thread forming technology and self-drilling tip addresses critical installation challenges by eliminating the need for separate drilling operations, significantly reducing assembly time while maintaining joint integrity. The BSD thread forming design creates stronger, more vibration-resistant connections compared to conventional fasteners, making it ideal for applications where loosening under dynamic loads is a concern. The zinc-plated finish provides essential corrosion protection in industrial environments, while the external hex drive ensures reliable torque transmission during installation. These tapping screws are engineered to solve common fastening problems in metal fabrication, HVAC systems, and electrical enclosures where secure, permanent connections are essential.

Specification Summary & Compliance

This No. 8 flanged tapping screw features precise 0.164" thread diameter with 18 TPI right-hand threads and 1-1/4" length for consistent performance. Manufactured to BSD tapping screw standards with thread forming technology that ensures proper fit and holding power. The screw meets industry standards for zinc-plated steel fasteners and is compliant with relevant industrial specifications for sheet metal and steel applications. The external hex drive (1/4" head width) and fully threaded design provide reliable installation characteristics suitable for professional and industrial use.