S-90694A820 Length 4" FM Approved Tapping Screws

Key Features & Benefits at a Glance

• Eliminates pre-drilling requirements with thread forming design that creates strong, permanent threads in steel and sheet metal
• Superior corrosion protection through black epoxy coating that withstands harsh industrial environments
• Enhanced drilling efficiency with specialized tip design that penetrates up to 0.047" thickness without pilot holes
• Optimized thread engagement featuring 0.255" diameter with 13 threads per inch for maximum holding power
• Reliable FM Approved performance ensuring compliance with rigorous industrial safety and quality standards
• Secure Phillips drive system (No. 3 size) providing positive torque control during installation
• Versatile material compatibility designed for steel, sheet metal, and insulation applications

Professional Applications & Engineering Value

These black epoxy coated steel tapping screws deliver exceptional engineering value in demanding industrial applications. The thread forming design eliminates the need for pre-tapped holes, significantly reducing installation time and labor costs while creating stronger, vibration-resistant connections. The specialized drilling tip efficiently penetrates steel and sheet metal up to 0.047" thick, making them ideal for HVAC systems, electrical enclosures, and structural assemblies. The black epoxy coating provides superior corrosion resistance, extending service life in environments exposed to moisture and chemicals. With FM Approval certification, these screws meet rigorous standards for industrial safety and reliability, ensuring consistent performance in critical applications where fastener failure is not an option.

Specification Summary & Compliance

These No. 15 x 4" tapping screws feature a 0.255" thread diameter with 13 threads per inch in right-hand thread direction. The partially threaded design with 3" thread length and 4" overall length provides optimal fastening performance. Manufactured to meet FM Approved specifications for industrial applications, these screws comply with relevant industry standards for thread forming screws in steel and sheet metal applications. The Phillips drive (No. 3) ensures compatibility with standard industrial tools, while the rounded pan head design offers a professional finished appearance.