S-90385A358 Length 3/4" ASME B18.6.3 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance through zinc-plated steel construction, ensuring long-lasting performance in various environments
• Excellent holding power in plastic materials with fully threaded No. 12 design and 16 TPI for secure, vibration-resistant fastening
• Efficient thread forming technology using DST style to create strong threads without chips, reducing installation time and material stress
• Easy installation and removal with Phillips No. 2 drive and standard pan head, providing reliable torque transfer and accessibility
• Precise fit and reduced cracking risk due to blunt tip design, ideal for plastic applications where material integrity is critical
• Industry-standard compliance meeting ASME B18.6.3 specifications, guaranteeing consistent quality and interchangeability
• Optimized for plastic fastening with recommended No. 19 drill bit (0.166" diameter) for proper hole preparation and maximum grip

Professional Applications & Engineering Value

These zinc-plated steel tapping screws are engineered specifically for plastic applications, addressing common challenges like material cracking and weak thread retention. The thread forming DST technology displaces plastic material during installation, creating strong, load-bearing threads without generating debris that could compromise assembly integrity. This makes them ideal for industrial and construction settings where reliable fastening in plastic components—such as enclosures, panels, or structural elements—is essential. The fully threaded design with 16 TPI ensures uniform stress distribution, while the Phillips drive and pan head facilitate quick assembly in tight spaces. By combining corrosion-resistant materials with precise engineering, these screws reduce maintenance needs and enhance the durability of plastic-based assemblies.

Specification Summary & Compliance

This No. 12 x 3/4" tapping screw features a thread diameter of 0.216" and is fully threaded with approximately 16 threads per inch, adhering to standard dimensional tolerances. It complies with ASME B18.6.3 specifications, ensuring consistent performance and interchangeability in professional applications. The screw is designed for use with a No. 19 drill bit (0.166" diameter) and is manufactured from zinc-plated steel, providing reliable corrosion protection. Meets common industry requirements for thread forming screws in plastic materials, with no additional compliance claims such as RoHS or REACH specified in the provided data.