S-93406A408 Length 2 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in demanding environments
• Enhanced load distribution from the wide truss head design, reducing surface damage and preventing pull-through in thin materials
• Efficient thread forming capability creates strong, permanent threads in sheet metal without requiring pre-tapped holes
• Maximum holding power through fully threaded design that maintains consistent grip along the entire fastener length
• Optimized installation compatibility with No. 21 drill bits and 0.025" maximum drilling thickness for precise sheet metal applications
• Secure Phillips drive engagement with No. 2 drive size providing reliable torque transfer during installation
• Industry compliance assurance meeting RoHS 3 and REACH regulations for safe, environmentally responsible manufacturing

Professional Applications & Engineering Value

These No. 10 Phillips truss head tapping screws deliver exceptional engineering value in sheet metal fabrication and assembly applications. The 18-8 stainless steel composition provides excellent resistance to corrosion and oxidation, making them ideal for outdoor equipment, HVAC systems, and industrial enclosures exposed to harsh conditions. The thread forming technology (A/AB type) creates precise, tight-fitting threads in sheet metal up to 0.025" thickness without chip formation, eliminating the need for separate tapping operations and reducing assembly time. The distinctive truss head design offers a wider bearing surface than standard heads, distributing clamping force more effectively to prevent material distortion in thin-gauge metals. With fully threaded construction and right-hand threading, these screws maintain consistent engagement throughout the material thickness, providing reliable fastening solutions for metalworking professionals seeking durability and installation efficiency.

Specification Summary & Compliance

These tapping screws feature precision No. 10 size with 0.19" thread diameter and 12 threads per inch for optimal performance in sheet metal applications. The manufacturing adheres to standard thread forming specifications for A/AB type tapping screws, ensuring consistent thread engagement and holding strength. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility and workplace safety standards. The screws are engineered for use with No. 21 drill bits (0.159" diameter) and are suitable for materials up to 0.025" maximum drilling thickness, providing reliable performance in industrial fastening applications.