S-90203A621 Length 2" 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-lasting performance in harsh environments
• Enhanced driving efficiency through square drive design that prevents cam-out and ensures secure installation
• Maximum material engagement with fully threaded shank that delivers superior holding power across the entire fastener length
• Optimized thread forming capability with 18 TPI right-hand threads designed specifically for aluminum and sheet metal applications
• Reliable seating and appearance thanks to standard pan head profile that provides consistent clamping force
• Streamlined installation process combining drilling and tapping operations into a single step for reduced labor time

Professional Applications & Engineering Value

These No. 8-18 self-drilling tapping screws are engineered to solve critical installation challenges in sheet metal and aluminum fabrication. The 18-8 stainless steel composition provides exceptional corrosion resistance for outdoor structures, HVAC systems, and industrial equipment exposed to moisture and chemicals. The integrated No. 2 drill tip eliminates the time-consuming pre-drilling process while the thread forming design creates strong, permanent threads in base materials without chip formation. The square drive and pan head configuration ensures high torque transmission and reliable seating, making these fully threaded screws ideal for construction, metal building assembly, and manufacturing applications where efficiency and durability are paramount.

Specification Summary & Compliance

These self-drilling tapping screws feature precision 0.164" thread diameter with 18 TPI right-hand threads and 2" length for consistent performance. Manufactured to industry standards for thread forming screws, they comply with relevant industrial fastening specifications. The 18-8 stainless steel material meets corrosion resistance requirements while the design ensures proper thread engagement in accordance with standard tapping screw classifications for aluminum and sheet metal applications.