S-90048A113 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-term durability in industrial environments.
• Efficient thread forming design creates strong, permanent threads in sheet metal without pre-tapping, reducing installation time and tooling costs.
• Optimal flush mounting with standard flat head and 82° countersink angle for smooth, secure surfaces in metal assemblies.
• Reliable driving performance using Phillips No. 1 drive, providing excellent torque transfer and reduced cam-out during installation.
• Maximum material grip with fully threaded shank and pointed tip, ensuring secure fastening in sheet metal up to 0.025" thickness.
• Precision compatibility with No. 44 drill bit (0.086" diameter) for accurate hole preparation and consistent thread formation.
• Regulatory compliance meeting RoHS 3 and REACH standards for safe, environmentally responsible manufacturing practices.

Professional Applications & Engineering Value

These zinc-plated steel tapping screws deliver exceptional value in sheet metal fabrication and assembly applications. The thread forming design (A/AB type) eliminates the need for separate tapping operations, significantly reducing production time while creating strong, vibration-resistant connections. The fully threaded configuration ensures maximum engagement throughout the material thickness, preventing loosening under dynamic loads. With right-hand threading and Phillips flat head drive, these screws provide reliable installation in confined spaces common in metalworking and industrial equipment assembly. The combination of zinc plating and precise 82° countersink angle offers both corrosion protection and seamless surface finishing, making them ideal for HVAC systems, electronic enclosures, and automotive components where both performance and aesthetics matter.

Specification Summary & Compliance

This No. 4-24 x 3/4" tapping screw features inch system measurements with standard thread forming (A/AB type) specifications. The screw maintains precise dimensional accuracy with No. 4 thread diameter (0.112"), 24 threads per inch, and 3/4" length for consistent performance. Manufacturing complies with industry standards for thread forming screws and includes full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.