S-97899A440 Length 1" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 410 stainless steel construction, ensuring long-lasting performance in demanding industrial environments
• Effortless installation thanks to the integrated drilling tip that eliminates pre-drilling, saving time and labor costs
• Exceptional holding power in steel, stainless steel, and sheet metal due to the thread forming design that creates strong, permanent threads
• Secure, high-torque fastening enabled by the 1/4" external hex head and flanged design for increased bearing surface and vibration resistance
• Reliable material penetration with a maximum drilling thickness of 0.098", ideal for standard sheet metal applications
• Enhanced visibility and identification with a white painted head, facilitating inspection and inventory management
• Full regulatory compliance with RoHS 3 and REACH, ensuring safety and environmental responsibility for global supply chains

Professional Applications & Engineering Value

This No. 8 hex flange tapping screw is engineered to solve critical fastening challenges in metal fabrication and assembly. Its thread forming action and drilling tip work in tandem to create precise, high-strength threads in steel, stainless steel, and sheet metal without pre-tapping, drastically reducing installation steps and the risk of material fatigue. The 410 stainless steel material provides excellent resistance to oxidation and corrosion, making it ideal for outdoor enclosures, HVAC systems, and industrial machinery. The combination of a flanged head and external hex drive ensures a secure, flush fit that distributes clamp load effectively, preventing loosening under vibration—a common failure point in dynamic applications.

Specification Summary & Compliance

This screw features a No. 8 size with a 0.164" thread diameter and 18 TPI in a right-hand, fully threaded configuration. The 1" length and 1/4" hex head with a 0.348" flange diameter provide precise dimensional control for consistent performance. It is manufactured to industry standards for thread forming (BSD type) tapping screws and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations.