S-94155A147 Length 2 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh industrial environments
• Efficient thread forming technology creates strong, permanent threads in sheet metal without pre-tapping requirements
• Optimized for sheet metal applications with precise No. 21 drill bit compatibility and 0.025" maximum drilling thickness capability
• Secure square drive design (No. 2 size) provides excellent torque transmission and reduces cam-out during installation
• Fully threaded shank ensures maximum grip length and uniform load distribution across the entire fastener
• Pan head design offers a balanced profile with good bearing surface for reliable clamping force
• Environmental compliance with RoHS 3 and REACH regulations for safe use in regulated industries

Professional Applications & Engineering Value

These thread forming tapping screws deliver exceptional engineering value in sheet metal applications where vibration resistance and material integrity are critical. The 18-8 stainless steel composition provides excellent corrosion resistance, making these fasteners ideal for outdoor equipment, HVAC systems, and industrial machinery exposed to moisture or chemicals. The thread forming design displaces material rather than removing it, creating stronger threads with improved fatigue resistance compared to traditional cutting screws. The pan head configuration with square drive ensures reliable installation with reduced stripping risk, while the fully threaded No. 10-12 specification provides consistent engagement throughout the material thickness. This combination addresses common challenges in metal fabrication, including joint integrity, installation efficiency, and long-term durability in demanding environments.

Specification Summary & Compliance

This tapping screw features precise dimensional specifications including No. 10 thread diameter (0.19"), 12 threads per inch, and 2-1/2" length with Class 2A thread tolerances. The fastener complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring material safety and regulatory compliance. Manufactured to industry standards for thread forming screws with right-hand threading and pointed tip for easy starting in pre-drilled holes using No. 21 drill bits (0.159" diameter).