S-90385A196 Length 5/8" ASME B18.6.3 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-lasting performance in various industrial environments
• Enhanced thread engagement through thread forming DST design, creating strong, vibration-resistant connections in plastic materials
• Optimized drive efficiency with Phillips No. 2 drive style, providing reliable torque transfer and reducing cam-out during installation
• Maximum holding power with fully threaded design, distributing load evenly across the entire fastener length for superior pull-out resistance
• Simplified installation process with standard pan head profile, allowing for flush mounting and easy tool access in confined spaces
• Reduced material stress with blunt tip design, minimizing cracking and damage to plastic components during assembly
• Industry-standard compatibility with recommended No. 30 drill bit (0.1285" diameter), ensuring precise hole preparation for optimal performance

Professional Applications & Engineering Value

These zinc-plated steel tapping screws are specifically engineered for plastic fastening applications where material integrity and joint reliability are critical. The thread forming DST design creates precise mating threads in plastic substrates without generating chips, eliminating contamination risks in sensitive assemblies. The fully threaded configuration and 18 TPI right-hand threads provide exceptional pull-out resistance in thermoplastic and thermoset materials, making them ideal for industrial plastic assembly in automotive components, electronic enclosures, and consumer products. The Phillips drive system ensures consistent installation torque, while the zinc plating offers reliable corrosion protection in demanding environments.

Specification Summary & Compliance

These No. 8 x 5/8" tapping screws feature precise 0.164" thread diameter with 18 threads per inch and comply with ASME B18.6.3 standards for dimensional accuracy and performance requirements. The manufacturing process adheres to RoHS 3 (2015/863/EU) compliance, ensuring environmental responsibility and material safety. The thread forming tapping method and DST screw type are specifically designed for plastic applications, providing reliable fastening without the need for additional locking elements.