S-90385A349 Length 7/8" ASME B18.6.3 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding environments
• Efficient thread forming with DST design creates strong, permanent threads in plastic without pre-tapping
• Optimized drive engagement through Phillips No. 2 drive prevents cam-out and ensures secure installation
• Maximum holding power with fully threaded shank distributing load evenly across the entire fastener length
• Industry-standard compliance with ASME B18.6.3 ensures consistent quality and reliable performance
• Simplified installation with compatible No. 27 drill bit size for precise hole preparation
• Enhanced material compatibility specifically engineered for plastic fastening applications

Professional Applications & Engineering Value

This zinc-plated steel tapping screw delivers exceptional value in plastic fastening applications where material integrity and long-term performance are critical. The thread forming DST design eliminates the need for separate tapping operations by displacing plastic material to create strong, load-bearing threads that resist loosening under vibration. The Phillips pan head provides a low-profile finish while the fully threaded configuration ensures maximum grip length in various material thicknesses. Engineered for industrial and construction environments, these screws prevent galvanic corrosion through proper material selection and surface treatment, making them ideal for plastic assembly in electrical enclosures, automotive components, and building materials where reliability cannot be compromised.

Specification Summary & Compliance

This No. 10 x 7/8" tapping screw features precise dimensional accuracy with 0.19" thread diameter and 16 TPI right-hand threads. Manufactured to meet ASME B18.6.3 specifications for dimensional standards and performance requirements. The zinc-plated steel construction provides corrosion protection while maintaining mechanical strength. Compatible with No. 27 drill bit (0.144" diameter) for proper hole preparation in plastic materials. The fully threaded design with blunt tip ensures consistent engagement and reliable fastening performance in industrial applications.