S-90627A128 Length 1 1/2" ASME B18.6.3 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black zinc-plated steel construction for extended service life in demanding environments
• Excellent thread-forming capability with DST design creates permanent, vibration-resistant threads in plastic materials
• Optimized drive efficiency through Phillips No. 2 drive system for secure installation and reduced cam-out
• Maximum material engagement with fully threaded shank design ensuring consistent holding power along entire length
• Enhanced assembly precision with standardized pan head profile providing reliable seating and uniform clamp force
• Industry-standard compliance meeting ASME B18.6.3 specifications for consistent quality and performance
• Simplified installation process with pre-determined No. 30 drill bit size for accurate hole preparation

Professional Applications & Engineering Value

These No. 8 x 1-1/2" Phillips pan head tapping screws deliver exceptional engineering value in plastic assembly applications where traditional fastening methods often fail. The thread-forming DST design eliminates the need for threaded inserts by displacing material to create strong, permanent threads that resist vibration loosening and pull-out forces. Manufactured from black zinc-plated steel, these screws provide superior corrosion protection while maintaining the structural integrity required for industrial applications. The combination of 18 TPI thread pitch and 0.164" thread diameter ensures optimal material engagement in various plastic substrates, from thermoplastics to composite materials. The pan head configuration with Phillips drive offers reliable installation torque transfer, making these fasteners ideal for automated assembly systems and high-volume production environments where consistency and reliability are paramount.

Specification Summary & Compliance

These precision-engineered tapping screws feature Class 2A thread tolerances with right-hand threading and fully threaded 1-1/2" length. The manufacturing process strictly adheres to ASME B18.6.3 standards, ensuring dimensional accuracy and performance consistency. The black zinc-plated surface treatment provides enhanced corrosion resistance while maintaining compliance with industry requirements. Proper installation requires a No. 30 drill bit (0.1285" diameter) for optimal thread formation in plastic materials. All specifications meet the dimensional and mechanical requirements outlined in the referenced standard for reliable performance in industrial fastening applications.