S-90198A340 Length 1 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Efficient thread forming design creates strong, reliable threads in sheet metal without pre-tapping, reducing installation time and labor costs.
• Optimized for sheet metal with a maximum drilling thickness of 0.025", ensuring secure fastening in thin metal sheets commonly used in HVAC, enclosures, and fabrication.
• Clean, flush installation provided by the standard 82° flat head and Phillips drive, preventing snagging and improving aesthetic finish.
• Full threading along the 1-3/4" length offers maximum grip and adjustability, enhancing joint integrity across various material thicknesses.
• Compliance with RoHS 3 and REACH regulations guarantees environmental safety and unrestricted use in regulated markets and sensitive applications.
• Precise compatibility with a No. 21 drill bit (0.159" diameter) simplifies hole preparation and ensures consistent, accurate installations.

Professional Applications & Engineering Value

This No. 10-12 tapping screw is specifically engineered for demanding sheet metal applications, where corrosion resistance and installation efficiency are critical. The 316 stainless steel material provides exceptional durability against chemicals, moisture, and salt spray, making it suitable for marine, chemical processing, and food industry equipment. Its thread forming (A/AB type) design displaces material to form strong internal threads, eliminating the need for separate tapping operations and reducing the risk of strip-out in thin-gauge metals. The fully threaded right-hand configuration and flat head with 82° countersink ensure a secure, flush fit that maintains structural integrity in assemblies like electronic enclosures, ventilation ducts, and automotive panels, while the Phillips drive allows for quick, tool-compatible installation.

Specification Summary & Compliance

This screw adheres to standard inch measurements with a No. 10-12 thread (approximately 12 threads per inch) and is fully threaded for consistent engagement. It features a standard flat head profile with an 82° countersink angle and is designed for use with a No. 21 drill bit (0.159" diameter) for holes up to 0.025" maximum drilling thickness. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.