S-90066A313 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
• Enhanced vibration resistance and sealing through integrated steel/rubber flat washer that prevents loosening and provides reliable performance
• Optimal thread forming capability with A/AB tapping screw design that creates strong, permanent threads in sheet metal without pre-tapping
• High-torque installation enabled by external hex drive design for secure fastening and easy removal when needed
• Maximum material compatibility with 0.025" maximum drilling thickness, making these screws ideal for various sheet metal applications
• Precision thread engagement with 10 TPI thread pitch and fully threaded design ensuring consistent, reliable fastening performance
• Simplified installation process with 5.5mm drill bit compatibility, reducing setup time and improving workflow efficiency

Professional Applications & Engineering Value

These No. 14 zinc-plated steel tapping screws deliver exceptional engineering value in sheet metal applications where vibration resistance and reliable fastening are critical. The thread forming design eliminates the need for pre-tapped holes, creating strong, permanent threads that won't strip or loosen under stress. The combination of steel/rubber washer provides dual benefits: the steel component distributes load evenly while the rubber element creates an effective seal against moisture and contaminants. With external hex drive compatibility, these screws accommodate high-torque installation tools commonly found in manufacturing environments, ensuring consistent clamping force across assembly lines. The fully threaded configuration maximizes pull-out resistance, making these fasteners ideal for HVAC systems, electrical enclosures, and automotive panels where structural integrity is paramount.

Specification Summary & Compliance

These thread forming tapping screws feature precision No. 14 size with 0.242" thread diameter and 10 TPI thread pitch in right-hand direction. The 3/4" length and fully threaded design ensure consistent performance across the entire fastening surface. Manufactured to A/AB tapping screw standards with external hex drive (3/8" head width) for standardized tool compatibility. Includes integrated flat washer (5/8" OD, 0.101" thickness) composed of steel/rubber composite. Compatible with 5.5mm drill bits (0.2165" diameter) for 0.025" maximum drilling thickness applications. Complies with industry standards for sheet metal fasteners and contains materials meeting RoHS and REACH environmental requirements.