S-90048A123 Length 1 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-term reliability in demanding industrial environments
• Efficient thread forming design creates strong, permanent threads in sheet metal without requiring pre-tapped holes
• Optimal flush installation with standard flat head profile and 82° countersink angle for smooth, professional finishes
• Enhanced driving efficiency through No. 1 Phillips drive that minimizes cam-out and improves installation speed
• Maximum material engagement with fully threaded design providing consistent holding power along the entire 1-1/2" length
• Precision compatibility with No. 44 drill bits (0.086" diameter) for accurate hole preparation and secure fastening
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global manufacturing applications

Professional Applications & Engineering Value

These No. 4-24 thread forming screws are specifically engineered to solve common challenges in sheet metal assembly applications. The zinc-plated steel construction provides essential corrosion protection while maintaining the strength required for durable fastening. The A/AB tapping screw type with thread forming capability eliminates the need for separate tapping operations, significantly reducing assembly time and labor costs. The fully threaded design ensures maximum pull-out resistance in materials up to 0.025" thickness, making these Phillips flat head screws ideal for HVAC systems, electronic enclosures, and automotive panels where vibration resistance and flush mounting are critical requirements.

Specification Summary & Compliance

This No. 4-24 x 1-1/2" tapping screw features precision right-hand threads with approximately 24 threads per inch and standard Class 2A thread tolerances. The fastener conforms to A/AB thread forming standards with a pointed tip for easy starting and a round shank cross-section. Manufacturing and material compliance includes full adherence to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance for your industrial applications.