S-90627A127 Length 1" ASME B18.6.3 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black zinc-plated steel construction, extending service life in demanding environments
• Efficient thread-forming installation using DST type design that creates strong, permanent threads in plastic materials without pre-tapping
• Maximum holding power through fully threaded design that distributes load evenly across the entire screw length
• Quick and secure fastening with No. 2 Phillips drive that prevents cam-out and ensures consistent torque application
• Optimized plastic compatibility with precise 0.164" thread diameter and 18 TPI configuration specifically engineered for plastic substrates
• Reliable performance assurance through compliance with ASME B18.6.3 industrial standards for dimensional accuracy and quality
• Streamlined installation process with compatible No. 30 drill bit (0.1285" diameter) for proper hole preparation and optimal thread engagement

Professional Applications & Engineering Value

These thread-forming DST screws are specifically engineered to address common challenges in plastic fastening applications, where traditional fasteners often strip threads or fail to provide sufficient holding power. The black zinc-plated steel construction offers enhanced corrosion protection while maintaining the necessary strength for durable assemblies. The Phillips pan head design provides a low-profile, secure fastening solution that resists cam-out during installation. As tapping screws for plastic, they eliminate the need for separate tapping operations, reducing assembly time and labor costs while creating strong, reliable threads that withstand vibration and thermal cycling in industrial environments, electronic enclosures, and automotive plastic components.

Specification Summary & Compliance

This No. 8 x 1" tapping screw features precise dimensional specifications including 0.164" thread diameter, 18 TPI thread pitch, and standard Class 2A thread tolerances. The screw is manufactured to comply with ASME B18.6.3 standards for dimensional accuracy and performance requirements. The thread forming DST type configuration ensures proper thread engagement in plastic materials when used with the recommended No. 30 drill bit (0.1285" diameter). The black zinc-plated finish provides corrosion resistance while maintaining compliance with industry standards for surface treatments in industrial fastening applications.