S-93406A201 Length 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ensuring long-term reliability in harsh industrial environments.
• Enhanced load distribution and reduced surface pressure due to the wide truss head design, preventing material damage in thin sheet metal.
• Efficient, secure thread forming with the A/AB tapping screw type, creating strong, permanent threads without pre-tapping in sheet metal.
• Optimized for high-strength fastening in sheet metal up to 0.025" thickness, using the specified No. 29 drill bit for precise, clean hole preparation.
• Full-length threading provides maximum grip and pull-out resistance along the entire 1-1/4" length for consistent holding power.
• Reliable drive engagement with the Phillips No. 2 drive, reducing cam-out risk and ensuring efficient installation with standard tools.
• Compliance with strict environmental regulations, including RoHS 3 and REACH, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This No. 8 x 1-1/4" 18-8 Stainless Steel Phillips Truss Head Tapping Screw is engineered to address common challenges in sheet metal fabrication and assembly. The thread forming method eliminates the need for separate tapping operations, cutting installation time and labor costs while creating strong, vibration-resistant threads that won't loosen under stress. The wide truss head distributes clamping force over a larger area, preventing dimpling or deformation in thin-gauge sheet metal. Made from corrosion-resistant 18-8 Stainless Steel, it withstands exposure to moisture, chemicals, and outdoor elements, making it ideal for HVAC systems, electrical enclosures, automotive panels, and industrial machinery where durability and reliability are critical. The combination of right-hand threading, fully threaded shank, and precise thread pitch ensures quick, secure fastening in high-volume production environments.

Specification Summary & Compliance

This tapping screw features a thread diameter of 0.164" with approximately 15 threads per inch, conforming to standard A/AB tapping screw specifications for sheet metal applications. It is designed for use with a No. 29 drill bit (0.136" diameter) and can drill through materials up to 0.025" thick. The screw is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets current environmental and safety standards for industrial use.