S-90033A328 Length 1 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide steel construction, extending service life in harsh industrial environments.
• Efficient thread-forming design creates strong, permanent threads in sheet metal without pre-tapping, reducing installation time and tooling costs.
• Optimal flush seating with an 82° countersink angle and standard flat head profile for smooth, secure surfaces in assembled components.
• Full-length threading ensures maximum grip and uniform load distribution along the entire 1-1/2" length for reliable fastening.
• Precision compatibility with No. 21 drill bits and 0.025" maximum drilling thickness, enabling accurate, repeatable installations in sheet metal.
• Enhanced drive stability from the Phillips No. 2 drive, minimizing cam-out and improving torque transfer during assembly.
• Compliance assurance with RoHS 3 and REACH regulations, meeting international environmental and safety standards for industrial use.

Professional Applications & Engineering Value

This black-oxide steel Phillips flat head tapping screw is engineered to address common challenges in sheet metal fastening, such as material fatigue and corrosion. The thread-forming (A/AB type) technology displaces metal to create robust, strip-resistant threads, eliminating the need for separate tapping operations and reducing assembly errors. With a fully threaded No. 10-12 design and pointed tip, it ensures quick starts and consistent engagement in applications like HVAC ductwork, electronic enclosures, and automotive panels. The black-oxide finish provides a durable barrier against moisture and oxidation, while the 82° countersink angle allows for seamless integration into thin-gauge metals, maintaining structural integrity and aesthetic appeal in demanding industrial settings.

Specification Summary & Compliance

This screw adheres to standard inch measurements with a thread diameter of 0.19" and approximately 12 threads per inch, ensuring precise Class 2A thread fit for reliable performance. It features a right-hand thread direction, round shank cross-section, and flat head with a diameter of 0.362" for uniform application. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental and safety requirements for industrial fasteners, supporting sustainable procurement practices.