S-90033A343 Length 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide steel construction, extending service life in demanding industrial environments.
• Effortless installation and reduced tool wear thanks to the No. 3 Phillips drive, ensuring quick, secure fastening with standard tools.
• Excellent thread retention and vibration resistance from the thread-forming A/AB type design, creating strong, reliable threads in sheet metal without pre-tapping.
• Flush, professional finish with a standard flat head and 82° countersink angle, allowing the screw to sit seamlessly in materials for a smooth surface.
• Full-length threading for maximum grip across the entire 1-1/4" length, providing consistent holding power in sheet metal applications up to 0.025" thickness.
• Wide compatibility and precise fit with a 0.216" thread diameter and 14 threads per inch, engineered to meet common sheet metal assembly requirements.
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safe, sustainable use in regulated industries.

Professional Applications & Engineering Value

These No. 12 Phillips flat head tapping screws are precision-engineered for sheet metal applications, where reliable fastening and material integrity are critical. The black-oxide steel offers enhanced durability and minimal corrosion, ideal for HVAC, electronics enclosures, and automotive assemblies. With a thread-forming design, these screws displace material to create strong, permanent threads without chips, reducing the risk of loosening under vibration. The fully threaded shank and pointed tip ensure quick starts and uniform load distribution, while the 82° countersink angle allows for a flush fit, preventing snags and improving aesthetics. This combination addresses common challenges like strip-out and corrosion, making these screws a trusted choice for high-volume, industrial fastener needs.

Specification Summary & Compliance

This product adheres to standard inch measurements with precise thread dimensions: 0.216" thread diameter, 14 threads per inch, and a Class 2A fit for reliable engagement. It conforms to A/AB tapping screw type standards for thread-forming applications in sheet metal. Manufacturing and material compliance include RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring environmental safety and regulatory alignment for global supply chains.