S-90385A361 Length 1 1/2" ASME B18.6.3 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Excellent thread-forming capability creates strong, permanent threads in plastic materials without pre-drilling
• Maximum holding power achieved through fully threaded design and 16 threads per inch for superior grip
• Easy installation with Phillips No. 2 drive that provides reliable torque transfer and reduces cam-out
• Optimized plastic engagement featuring blunt tip design that minimizes material stress and cracking
• Standard pan head profile offers low-profile fastening with good bearing surface for secure assemblies
• Industry-standard compliance ensures consistent quality and performance across all applications

Professional Applications & Engineering Value

These thread forming screws are specifically engineered for plastic applications where traditional fastening methods often cause material failure. The zinc-plated steel construction provides essential corrosion protection while maintaining the strength required for industrial use. The DST thread forming design displaces plastic material rather than cutting it, creating zero clearance fit that prevents loosening from vibration and thermal cycling. With 1-1/2" length and fully threaded configuration, these screws deliver maximum engagement in plastic assemblies commonly found in electrical enclosures, automotive components, and consumer products. The Phillips drive ensures compatibility with standard installation tools, making them ideal for high-volume manufacturing environments.

Specification Summary & Compliance

These No. 12 tapping screws feature precise Class 2A thread tolerances with 0.216" thread diameter and 16 threads per inch configuration. Manufactured to ASME B18.6.3 specifications, they ensure consistent performance and dimensional accuracy. The rounded pan head design measures 0.373" in diameter with 0.133" height, providing optimal clamping force distribution. Recommended for use with No. 19 drill bit (0.166" diameter) when required. Complies with industry standards for thread forming screws in plastic materials, delivering reliable fastening solutions for professional applications.