S-90198A105 Length 1/2" 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, permanent threads in sheet metal without pre-tapping, reducing assembly time and tooling costs.
• Precise 82° countersink angle ensures a flush, professional finish that minimizes snagging and improves aerodynamic surfaces.
• Reliable Phillips No. 1 drive provides secure tool engagement and controlled torque application, reducing cam-out risks during installation.
• Full threading along the 1/2" length maximizes grip and load distribution across the entire fastened joint.
• Compliance with RoHS 3 and REACH regulations guarantees environmental safety and global market acceptability for your products.
• Optimized for 0.025" maximum sheet metal thickness with matching No. 44 drill bit size for precise, clean hole preparation.

Professional Applications & Engineering Value

These 316 stainless steel tapping screws deliver exceptional performance in demanding sheet metal applications where corrosion resistance and joint integrity are critical. The thread forming design eliminates the need for separate tapping operations, creating strong, strip-resistant threads that maintain holding power under vibration and thermal cycling. The Phillips flat head configuration with standard profile provides a clean, recessed finish that won't interfere with adjacent components. Engineered for No. 4-24 thread specifications, these screws are particularly valuable in electrical enclosures, HVAC systems, automotive panels, and industrial equipment where corrosion resistant fasteners must withstand exposure to chemicals, moisture, and temperature extremes while maintaining consistent clamping force.

Specification Summary & Compliance

This thread forming tapping screw features a No. 4-24 fully threaded design with Class 2A thread tolerances, right-hand thread direction, and A/AB tapping screw type specifications. The flat head measures 0.212" in diameter with 0.067" height, complementing the pointed tip for easy starting. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring restricted substance compliance for global industrial applications. The screw is optimized for use with No. 44 drill bits (0.086" diameter) in materials up to 0.025" thickness.