S-90065A110 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ensuring long-term reliability in harsh industrial environments.
• Efficient thread forming design creates strong, permanent threads in sheet metal without pre-tapping, reducing installation time and tooling costs.
• Optimized for thin materials with maximum drilling thickness of 0.025", providing secure fastening in sheet metal applications.
• Precise countersinking with 82° flat head profile ensures flush mounting and professional finish in assembled products.
• Enhanced driving stability with No. 1 Phillips drive size, minimizing cam-out and improving installation efficiency.
• Full threading along 1/2" length delivers maximum grip and uniform stress distribution across the entire fastener engagement.
• Environmental compliance with RoHS 3 and REACH standards, meeting global regulatory requirements for industrial components.

Professional Applications & Engineering Value

These 18-8 Stainless Steel Phillips Flat Head Tapping Screws are engineered specifically for sheet metal applications where corrosion resistance and reliable fastening are critical. The thread forming technology (Type A) eliminates the need for separate tapping operations, creating strong internal threads that resist vibration loosening and provide superior pull-out strength. The 82° countersink angle and flat head design ensure seamless integration with metal surfaces, preventing snagging while maintaining structural integrity. Ideal for HVAC systems, electronic enclosures, and automotive panels, these screws deliver consistent performance in materials up to 0.025" thickness, with the No. 1 Phillips drive offering secure torque transmission during installation.

Specification Summary & Compliance

This No. 4-24 x 1/2" tapping screw features a 0.112" thread diameter with 24 threads per inch, manufactured to standard thread forming Type A specifications. The fastener maintains precise dimensional accuracy with fully threaded shank and pointed tip for easy starting. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industrial suitability. Recommended drill bit size No. 44 (0.086" diameter) for proper hole preparation in sheet metal applications.