S-94425A770 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-term durability in harsh industrial environments.
• High-torque installation capability via the T27 external hex/torx drive, providing secure fastening and reducing tool slippage.
• Self-drilling efficiency with a specialized No. 3 drill tip that penetrates up to 0.187" thickness, eliminating the need for pre-drilling and saving labor time.
• Reliable thread-forming design (BSD type) creates strong, permanent threads in steel and sheet metal, minimizing loosening under vibration.
• Enhanced load distribution from the 0.445" flange diameter, reducing surface pressure and preventing material damage.
• Secure anti-rotation locking through serrations under the head, maintaining clamp load in dynamic applications.
• Full-thread engagement along the 3/4" length ensures maximum holding power and uniform stress distribution.

Professional Applications & Engineering Value

This No. 12 zinc-plated steel tapping screw is engineered to address common challenges in steel and sheet metal fabrication, where speed, strength, and corrosion resistance are critical. The thread-forming design with a right-hand thread and fully threaded shank creates durable, high-strength connections without tapping operations, streamlining assembly processes. The T27 external hex/torx drive accommodates high torque applications, reducing installation time and preventing drive strip-out. Combined with the flanged design and serrations for vibration resistance, it provides a reliable solution for HVAC, automotive, and structural metalwork, ensuring long-term performance even under stress and environmental exposure.

Specification Summary & Compliance

This screw features a 0.216" thread diameter with 14 threads per inch and a 3/4" length, manufactured to precise dimensional standards for consistent performance. It complies with RoHS 3 (2015/863/EU) regulations, ensuring environmental safety and material quality. The BSD tapping screw type and thread-forming method adhere to industry practices for reliable fastening in steel and sheet metal applications.