S-93882A224 1/4"-20 x 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
• Exceptional holding power through flanged design that distributes clamping force evenly and eliminates the need for separate washers
• High-strength thread forming capability creates permanent, vibration-resistant threads in steel, aluminum, brass, cast iron and sheet metal without chip removal
• Optimized installation efficiency with external hex drive and 3/8" head width providing secure tool engagement and high torque transmission
• Reliable coarse UNC threading ensures quick assembly and reduced cross-threading risks in production environments
• Complete thread engagement with fully threaded design maximizes pull-out strength across the entire fastener length
• Simplified installation process with blunt tip design and precise No. 2 drill bit (0.221") requirement for accurate hole preparation

Professional Applications & Engineering Value

These zinc-plated steel tapping screws deliver exceptional engineering value through their thread forming design that creates strong, permanent threads in various base materials without generating chips. The flanged hex head construction provides superior bearing surface distribution, eliminating the need for additional washers while maintaining clamp load integrity. Particularly effective in steel, aluminum, brass, cast iron, and sheet metal applications, these 1/4"-20 UNC coarse thread fasteners offer vibration resistance and reliable performance in automotive assemblies, electrical enclosures, machinery frames, and structural components. The combination of external hex drive and fully threaded design ensures maximum installation efficiency and pull-out strength, making them ideal for high-volume production environments where reliability and speed are critical.

Specification Summary & Compliance

Manufactured to precise dimensional standards with UNC coarse threads (1/4"-20) meeting Class 2A tolerance requirements. Features SW thread forming tapping screw configuration with right-hand threading and blunt tip design. Complies with industry standards for thread forming screws and manufactured using zinc-plated steel for corrosion protection. The flanged hex head design provides consistent performance in various industrial applications requiring reliable fastening solutions.