S-90064A733 Length 2 1/2" 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 through combined drilling and thread-forming action, eliminating need for pre-drilling in steel and sheet metal
• Enhanced load distribution with integrated flange design that provides wider bearing surface and prevents pull-through
• High-torque capability with external hex drive head design for secure fastening and reduced tool slippage
• Maximum material penetration with fully threaded shank and specialized drill tip that handles up to 0.098" thickness
• Reliable thread engagement through BSD thread-forming technology that creates strong, vibration-resistant connections
• Versatile application range with No. 8-18 thread specification suitable for various steel and sheet metal fastening requirements

Professional Applications & Engineering Value

These zinc-plated steel tapping screws deliver exceptional value in industrial fastening applications where speed, reliability, and corrosion resistance are critical. The innovative combination of thread-forming BSD technology and integrated drilling tip eliminates multiple installation steps, significantly reducing assembly time in steel and sheet metal fabrication. The flanged hex head design provides superior clamping force while preventing surface damage, making these screws ideal for HVAC systems, electrical enclosures, and metal framework assembly. With fully threaded construction and right-hand threading, these fasteners maintain consistent holding power across the entire engagement length, ensuring vibration-resistant connections that withstand industrial stresses.

Specification Summary & Compliance

This No. 8-18 x 2-1/2" tapping screw features precision thread diameter of 0.164" with 18 threads per inch and meets standard inch system specifications. The fastener incorporates BSD thread-forming technology for reliable performance in steel and sheet metal applications. Manufacturing complies with industry standards for dimensional accuracy, including proper head dimensions (0.141" height, 1/4" width) and flange diameter (0.348"). The zinc-plated finish provides corrosion protection while maintaining RoHS and REACH compliance for environmentally conscious manufacturing operations.