S-90398A196 Length 5/8" Tapping Screws

Key Features & Benefits at a Glance

• Eliminates separate washer requirements with integrated flat steel washer for faster assembly and reduced component count
• Superior corrosion resistance through chrome-plated steel construction for extended service life in industrial environments
• Enhanced load distribution with wide truss head design that prevents pull-through in thin sheet metal applications
• Optimized thread forming performance with A/AB tapping screw type creating strong, vibration-resistant threads in 0.025" maximum thickness materials
• Streamlined installation process featuring No. 2 Phillips drive and pointed tip for precise starting alignment
• Maximum thread engagement through fully threaded design ensuring consistent clamping force along the entire 5/8" length
• Precision drilling compatibility with No. 29 drill bit (0.136" diameter) for perfect hole preparation in sheet metal assemblies

Professional Applications & Engineering Value

These No. 8 x 5/8" Phillips Truss Head tapping screws deliver exceptional engineering value for sheet metal applications where vibration resistance and material integrity are critical. The thread forming design creates permanent, high-strength threads in parent material without cutting or removing metal, eliminating chip contamination concerns in sensitive assemblies. The chrome-plated steel construction provides durable corrosion protection while the integrated flat washer distributes clamping force across a wider surface area, preventing distortion in thin-gauge materials up to 0.025" thickness. The combination of right-hand threading with 15 threads per inch and pointed tip ensures quick starts and smooth driving action, reducing installation time and improving production efficiency in metalworking, HVAC, and electronic enclosure applications.

Specification Summary & Compliance

These thread forming sheet metal screws feature precise 0.164" thread diameter with 15 threads per inch and comply with standard inch measurement system requirements. Manufactured as A/AB tapping screw type with fully threaded design for maximum engagement. The chrome-plated steel construction meets industrial durability standards while the integrated steel flat washer (1/2" OD) provides reliable load distribution. Compatible with No. 29 drill bit (0.136" diameter) for optimal hole preparation in sheet metal applications requiring 0.025" maximum drilling thickness.