S-90048A110 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
• Efficient thread forming technology creates strong, permanent threads in sheet metal without requiring pre-tapped holes
• Optimized for 0.025" maximum drilling thickness in sheet metal applications with precise No. 44 drill bit compatibility
• Secure flush mounting with standard flat head profile and 82° countersink angle for smooth surface finishes
• Reliable Phillips drive system (No. 1 size) ensures consistent torque application and reduces cam-out during installation
• Full threading along the entire 1/2" length provides maximum grip and holding power in thin materials
• Compliance with international environmental standards including RoHS 3 and REACH for global manufacturing applications

Professional Applications & Engineering Value

These No. 4-24 thread forming screws are specifically engineered for sheet metal assembly where traditional fastening methods fall short. The zinc-plated steel construction provides essential corrosion protection while maintaining the high tensile strength required for industrial applications. The thread forming design eliminates the need for separate tapping operations, reducing assembly time and labor costs. With their 82° countersink angle and flat head profile, these screws sit flush with surfaces, preventing snagging and creating professional finishes. The fully threaded configuration ensures maximum thread engagement in thin-gauge materials, providing superior pull-out resistance that mechanical engineers rely on for durable metal fabrications.

Specification Summary & Compliance

This No. 4-24 x 1/2" tapping screw features precision Class 2A thread tolerances with 24 threads per inch and 0.112" thread diameter. Manufactured to A/AB screw type standards with right-hand threading and compatible with No. 44 drill bits (0.086" diameter). Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial applications.