S-93406A401 Length 5/16" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life
• Enhanced grip and load distribution from the wide truss head design, reducing the risk of material pull-through in thin sheet metal
• Efficient thread forming technology creates strong, secure threads in pre-drilled holes without generating chips, ensuring reliable fastening
• Optimized for 0.025" maximum drilling thickness with precise No. 32 drill bit compatibility, streamlining assembly processes
• Secure and tamper-resistant driving with the Phillips No. 2 drive, providing consistent torque application and reducing cam-out
• Full threading and pointed tip for quick starts and maximum thread engagement along the entire 5/16" length
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and meets global industrial standards

Professional Applications & Engineering Value

This No. 6-18 thread forming tapping screw is engineered to address common challenges in sheet metal fabrication, such as material stripping and corrosion-induced failure. The 18-8 stainless steel composition provides excellent resistance to oxidation and chemical exposure, making it suitable for outdoor equipment, HVAC systems, and electronic enclosures. Its thread forming design (Type A/AB) displaces material to form robust internal threads, eliminating the need for tapping and reducing assembly time. The Phillips truss head offers a low-profile, wide bearing surface that distributes clamping force effectively, preventing deformation in thin-gauge metals up to 0.025" thickness. This combination of corrosion-resistant material and efficient fastening technology ensures long-term reliability in demanding industrial applications.

Specification Summary & Compliance

This screw features a No. 6-18 thread with a diameter of 0.138" and 18 threads per inch, fully threaded for maximum engagement. It adheres to standard inch measurements with a length of 5/16" and is designed for use with a No. 32 drill bit (0.116" diameter). The screw complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for industrial use. Manufactured to precise dimensional tolerances typical for thread forming screws, it provides consistent performance in sheet metal applications.