S-90627A125 Length 5/8" ASME B18.6.3 Tapping Screws

Key Features & Benefits at a Glance

• Superior thread retention with DST thread forming technology that creates strong, permanent threads in plastic materials without chips or debris
• Enhanced corrosion resistance through black zinc-plated steel construction, providing durable protection in various industrial environments
• Optimized installation efficiency with No. 2 Phillips drive and pan head design for secure tool engagement and consistent torque application
• Reduced material stress thanks to the blunt tip and thread forming design that minimizes cracking in plastic components during installation
• Precise fit and alignment with fully threaded 0.164" diameter shank and 18 TPI configuration for uniform load distribution
• Simplified assembly process requiring only a No. 30 drill bit (0.1285") for proper hole preparation and optimal performance
• Industry-standard compliance meeting ASME B18.6.3 specifications for consistent quality and reliability in professional applications

Professional Applications & Engineering Value

These No. 8 x 5/8" Phillips Pan Head tapping screws are specifically engineered for plastic assembly applications where traditional threading methods often cause material failure. The black zinc-plated steel construction combined with DST thread forming technology addresses critical challenges in plastic fastening by eliminating the risk of material cracking and strip-out common with standard screws. The fully threaded blunt tip design ensures smooth insertion while creating strong, permanent threads that withstand vibration and thermal cycling. This makes them ideal for industrial fastening in electronics enclosures, automotive trim components, and consumer products where plastic-to-plastic or plastic-to-metal connections require reliable, long-term performance without the need for additional locking elements.

Specification Summary & Compliance

These thread forming screws feature precise dimensional accuracy with a 0.164" thread diameter and 18 TPI configuration, manufactured to ASME B18.6.3 standards for consistent quality and performance. The right-hand thread direction and fully threaded design ensure proper engagement in pre-drilled holes using a No. 30 drill bit (0.1285"). Compliance with industry specifications guarantees reliable performance in professional plastic assembly applications, with the black zinc plating providing additional corrosion protection for extended service life in various operating environments.