S-90064A736 Length 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 external hex drive design providing secure torque transmission and preventing tool slippage
• Eliminates pre-drilling requirements thanks to integrated No. 2 drilling tip that penetrates up to 0.098" steel and sheet metal
• Enhanced load distribution through 0.348" flange diameter that reduces surface pressure and prevents material deformation
• Maximum thread engagement with fully threaded design ensuring superior holding power across the entire fastener length
• Reliable thread formation using BSD thread forming technology that creates strong, strip-resistant threads in parent material
• Optimized for high-volume applications with right-hand threading and standardized No. 8-18 specifications for consistent performance

Professional Applications & Engineering Value

This heavy-duty flanged tapping screw delivers exceptional value in steel and sheet metal assembly applications where drilling and fastening operations need consolidation. The zinc-plated steel construction provides essential corrosion protection for industrial environments, while the thread forming technology creates permanent, vibration-resistant connections without chip removal concerns. The integrated No. 2 drilling tip eliminates separate drilling operations, significantly reducing installation time and labor costs in high-volume production settings. With its external hex drive and 0.348" flange diameter, this fastener ensures secure installation and optimal load distribution, preventing material distortion in thin-gauge applications. The fully threaded design maximizes pull-out resistance, making it ideal for structural connections in HVAC systems, electrical enclosures, and metal framing where reliability is critical.

Specification Summary & Compliance

This No. 8-18 x 4" tapping screw features precision 0.164" thread diameter with 18 threads per inch in right-hand orientation, conforming to BSD thread forming standards. The fastener maintains Class 2A thread tolerances for consistent performance and is manufactured from zinc-plated steel for corrosion resistance. The product meets industry standards for thread forming screws and is compliant with RoHS and REACH environmental regulations, ensuring safe use across various industrial applications.