S-91515A600 Length 3 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for long-lasting performance in harsh industrial environments
• Efficient installation through self-drilling tip that eliminates pre-drilling, saving labor time and costs on steel and sheet metal projects
• Enhanced load distribution with wide truss head and integrated flange design that prevents pull-through and material damage
• Reliable thread formation using BSD thread forming technology that creates strong, vibration-resistant connections without chip removal
• Optimized driving control with Phillips No. 2 drive that provides secure bit engagement and reduces cam-out during installation
• Maximum thread engagement through fully threaded design ensuring consistent holding power across the entire fastener length
• Compliance assurance with RoHS 3 standards for safe use in regulated industrial applications

Professional Applications & Engineering Value

These No. 8 zinc-plated steel tapping screws deliver exceptional value in sheet metal and steel fabrication where speed and reliability are critical. The specialized thread forming design creates permanent, high-strength threads in parent material without generating chips, eliminating contamination risks in sensitive assemblies. The integrated flanged truss head provides superior clamping force distribution, preventing material distortion in thin-gauge applications. With a self-drilling tip capable of penetrating up to 0.098" thickness, these BSD tapping screws significantly reduce installation time by eliminating separate drilling operations. The Phillips drive ensures compatibility with standard industrial tools while the zinc plating offers reliable corrosion protection for extended service life in demanding environments.

Specification Summary & Compliance

These No. 8 x 3-1/2" tapping screws feature a 0.164" thread diameter with 18 TPI right-hand threads in a fully threaded configuration. Manufactured to BSD standards for thread forming applications, they comply with RoHS 3 (2015/863/EU) environmental regulations. The flanged truss head design incorporates a 0.44" flange diameter with 0.097" head height, while the No. 2 drilling tip enables direct penetration into materials up to 0.098" thickness without pre-drilling.