S-90203A629 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Eliminates pre-drilling requirements with integrated No. 3 drill tip that penetrates up to 0.21" thick aluminum and sheet metal, significantly reducing installation time and labor costs.
• Superior corrosion resistance provided by 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments and outdoor applications.
• Exceptional holding power through fully threaded design and thread forming action, creating strong, vibration-resistant connections in ductile materials.
• Optimized drive efficiency with square drive (No. 3) and pan head design, preventing cam-out and allowing higher torque application during installation.
• Precision thread engagement with 14 TPI right-hand threads and 0.216" diameter, ensuring consistent performance and reliable fastening in specified materials.
• Streamlined installation process combining drilling and tapping in one operation, minimizing tool changes and improving production efficiency.
• Durable material performance with 18-8 stainless steel maintaining mechanical properties and corrosion resistance even in demanding metalworking applications.

Professional Applications & Engineering Value

These self-drilling tapping screws are specifically engineered to address critical challenges in sheet metal and aluminum fabrication where efficiency and reliability are paramount. The integrated No. 3 drill tip eliminates the need for separate drilling operations, significantly reducing installation time while preventing material damage from misaligned holes. The thread forming design creates stronger threads in ductile materials by displacing rather than removing material, resulting in superior pull-out resistance and vibration tolerance. Manufactured from 18-8 stainless steel, these screws maintain their mechanical integrity and corrosion resistance in demanding industrial environments, from HVAC systems to electrical enclosures and metal building components. The combination of square drive and pan head design ensures secure tool engagement and consistent clamping force, making them ideal for high-volume production environments where reliability and speed are critical factors.

Specification Summary & Compliance

These No. 12 self-drilling screws feature precision 14 TPI threads with standard thread form dimensions and Class 2A thread fit for consistent engagement. The 3/4" length and 0.216" thread diameter comply with industry standards for tapping screw applications. Manufactured from 18-8 stainless steel meeting standard material specifications, these fasteners are suitable for industrial applications requiring corrosion resistance. The square drive (No. 3) and pan head configuration follows established drive system standards. While designed for optimal performance in aluminum and sheet metal up to 0.21" maximum drilling thickness, these screws meet general industry requirements for mechanical fasteners in metalworking applications.