S-90398A150 Length 5/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with chrome-plated steel construction for extended service life in demanding industrial environments
• Enhanced load distribution through integrated flat steel washer that prevents surface damage and maintains joint integrity
• Optimized thread forming capability with A/AB tapping screw design that creates strong, permanent threads in sheet metal up to 0.025" thickness
• Increased driving efficiency with No. 2 Phillips drive that provides secure tool engagement and reduces cam-out during installation
• Maximum material engagement through fully threaded design that ensures consistent holding power along the entire fastener length
• Wide truss head profile offers larger bearing surface for improved stability and reduced risk of pull-through in thin materials
• Precision installation compatibility with No. 32 drill bit (0.116" diameter) for accurate hole preparation and optimal thread formation

Professional Applications & Engineering Value

These chrome-plated steel tapping screws deliver exceptional performance in sheet metal applications where vibration resistance and permanent fastening are critical. The thread forming design eliminates the need for separate tapping operations, creating strong internal threads that won't strip or loosen under stress. The integrated flat steel washer distributes clamping force evenly across a wider surface area, preventing material deformation in thin-gauge metals while providing superior sealing against moisture and contaminants. With their fully threaded configuration and 0.138" thread diameter featuring 18 threads per inch, these Phillips truss head screws ensure maximum thread engagement and holding power in materials up to 0.025" thickness, making them ideal for HVAC systems, electronic enclosures, automotive panels, and industrial equipment assemblies.

Specification Summary & Compliance

Manufactured to precise dimensional standards with 0.138" thread diameter and 18 threads per inch in right-hand configuration. Features Class 2A thread tolerances for reliable performance in thread forming applications. The A/AB tapping screw type complies with industry standards for sheet metal fastening, while the chrome-plated steel construction meets corrosion resistance requirements for industrial environments. Compatible with standard No. 32 drill bits (0.116" diameter) for proper hole preparation. Manufactured in accordance with relevant industrial fastening specifications and quality standards.