S-90821A330 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with galvanic barrier coated 18-8 stainless steel construction for long-lasting performance in harsh environments
• Efficient installation in aluminum and sheet metal using thread forming technology that creates strong, secure threads without pre-drilling
• Maximum drilling capability with integrated No. 2 drill tip that penetrates materials up to 0.098" thick
• Enhanced stability and load distribution through the integrated flange design that eliminates the need for separate washers
• Quick and secure installation with external hex drive that provides excellent torque transmission and prevents stripping
• Full thread engagement along the entire 1/2" length for maximum holding power and vibration resistance
• Reliable performance in right-hand thread applications with precise 18 threads per inch for consistent fastening results

Professional Applications & Engineering Value

These flanged hex head tapping screws deliver exceptional value in aluminum and sheet metal fabrication where corrosion resistance and installation efficiency are critical. The galvanic barrier coated 18-8 stainless steel construction provides superior protection against environmental factors, making these thread forming screws ideal for outdoor equipment, electrical enclosures, and HVAC systems. The combination of thread forming technology and integrated drilling tip eliminates multiple installation steps, reducing labor costs while ensuring secure fastening in materials up to 0.098" thickness. The external hex drive allows for high-torque installation with standard tools, while the flanged design distributes clamping force evenly, preventing material deformation and maintaining joint integrity under vibration and load stress.

Specification Summary & Compliance

This No. 8-18 x 1/2" flanged hex head tapping screw features precise dimensional accuracy with 0.164" thread diameter and 18 threads per inch in right-hand orientation. Manufactured as a BSD type thread forming screw with fully threaded shank and 0.348" flange diameter for optimal performance. The screw meets industry standards for tapping screw applications and is manufactured using 18-8 stainless steel with galvanic barrier coating for enhanced corrosion protection. Complies with relevant industrial fastening specifications for material composition and mechanical properties.