S-90203A618 Length 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Eliminates pre-drilling requirements with integrated No. 2 drill tip that penetrates up to 0.1" thickness in aluminum and sheet metal
• Superior corrosion resistance provided by 18-8 stainless steel construction for long-term reliability in harsh environments
• Maximum installation efficiency through No. 2 square drive design that prevents cam-out and ensures secure tool engagement
• Enhanced material engagement with fully threaded shank design that delivers superior holding power throughout the entire length
• Optimized thread forming capability with 18 TPI thread pitch that creates strong, secure fastenings in ductile materials
• Versatile pan head design with standard rounded profile for broad compatibility and professional finished appearance
• Precise dimensional control with consistent 0.164" thread diameter ensuring reliable performance across multiple applications

Professional Applications & Engineering Value

These No. 8-18 self-drilling screws are engineered specifically for demanding aluminum and sheet metal applications where efficiency and reliability are critical. The 18-8 stainless steel construction provides exceptional corrosion resistance, making these thread forming screws ideal for outdoor, marine, and industrial environments. The integrated No. 2 drill tip eliminates the time-consuming pre-drilling process, significantly reducing installation time while maintaining precision. The fully threaded design ensures maximum pull-out resistance and vibration resistance in thin-gauge materials. With the No. 2 square drive system, installers benefit from reduced tool slippage and increased torque transmission, making these tapping screws perfect for high-volume production environments where speed and reliability are paramount.

Specification Summary & Compliance

These self-drilling tapping screws feature precision 0.164" thread diameter with 18 TPI thread pitch and 1-1/4" length for consistent performance. Manufactured to industry standards for thread forming screws with right-hand threading and standard pan head configuration. The 18-8 stainless steel material complies with industry specifications for corrosion resistance and mechanical properties. Products conform to relevant industrial fastening standards and are suitable for professional sheet metal and aluminum fabrication applications requiring reliable, high-performance fastening solutions.