S-90048A300 Length 1 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-term reliability in demanding industrial environments.
• Effortless installation and reduced assembly time through thread-forming technology that creates strong, clean threads without pre-tapping.
• Maximum holding power in sheet metal with a No. 12 thread diameter and 11 threads per inch, providing excellent pull-out resistance.
• Clean, flush finish thanks to the standard flat head profile and 82° countersink angle, ideal for applications requiring a smooth surface.
• Wide compatibility with a 0.1875" drill bit, simplifying hole preparation and ensuring precise fit in sheet metal up to 0.025" thick.
• Secure, slip-resistant driving with a Phillips No. 3 drive, allowing for high torque application and reducing cam-out risks.
• Full regulatory compliance with RoHS 3 and REACH standards, making them suitable for global industrial supply chains.

Professional Applications & Engineering Value

These zinc-plated steel tapping screws are specifically engineered to address common challenges in sheet metal fabrication, such as material splitting and weak thread retention. The thread-forming (Type A/AB) design displaces material rather than removing it, creating stronger threads that resist vibration loosening and increase fatigue life. The fully threaded shank and pointed tip ensure quick starting and consistent engagement across the entire 1-3/4" length, providing uniform clamping force. This makes them ideal for HVAC systems, electronic enclosures, and automotive assemblies where reliable fastening and corrosion resistance are critical. The combination of a Phillips flat head and precise 82° countersink allows for seamless integration into metal surfaces, eliminating protrusions and enhancing aesthetic and functional integrity.

Specification Summary & Compliance

This No. 12 x 1-3/4" tapping screw features a 0.216" thread diameter with 11 threads per inch and adheres to standard inch system tolerances for consistent performance. Manufactured as a Type A/AB thread-forming screw with a right-hand thread direction, it is designed for use in sheet metal with a recommended 3/16" (0.1875") drill bit. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial applications.