S-90203A611 Length 3/8" Tapping Screws

Key Features & Benefits at a Glance

• Eliminates pre-drilling requirements with integrated No. 2 drill tip that penetrates up to 0.09" thickness in aluminum and sheet metal
• Superior corrosion resistance provided by 18-8 stainless steel construction for long-lasting performance in demanding environments
• Enhanced installation control through square drive design that prevents cam-out and ensures secure fastening
• Optimized thread engagement with fully threaded design and thread forming technology that creates strong, vibration-resistant connections
• Streamlined assembly process combining drilling and tapping operations into a single step for reduced labor time
• Reliable fastening performance with pan head design that provides excellent bearing surface and consistent clamping force
• Precision thread formation with 20 threads per inch ensuring secure fit and reduced risk of strip-out in thin materials

Professional Applications & Engineering Value

These 18-8 stainless steel self-drilling screws deliver exceptional value in sheet metal fabrication and aluminum assembly applications where efficiency and corrosion resistance are critical. The integrated No. 2 drill tip eliminates the need for separate drilling operations, significantly reducing installation time while maintaining precision in materials up to 0.09" thick. The thread forming design creates strong, permanent threads in ductile metals without generating chips, preventing contamination in sensitive environments. The combination of square drive and pan head configuration provides superior torque transmission and clamping force distribution, making these tapping screws ideal for HVAC systems, electronic enclosures, and architectural metalwork where vibration resistance and long-term reliability are essential.

Specification Summary & Compliance

Manufactured to precise dimensional standards with No. 6-20 thread specification (0.138" diameter, 20 TPI) and 3/8" length. Features right-hand thread direction and fully threaded shank for maximum engagement. The 18-8 stainless steel composition provides excellent mechanical properties and corrosion resistance, while the thread forming tapping method ensures reliable performance in aluminum and sheet metal applications. Complies with industry standards for self-drilling fasteners and meets material specifications for corrosion-resistant applications.