S-90096A336 1/4"-20 x 1" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Superior thread-cutting performance - Self-tapping design eliminates the need for pre-tapped holes, reducing installation time and labor costs
• Enhanced corrosion resistance - Zinc-plated steel construction provides reliable protection against rust in demanding industrial environments
• Optimized material compatibility - Specifically engineered for aluminum, brass, cast iron, and sheet metal applications with precise No. 2 drill bit requirements
• Increased installation efficiency - External hex drive with flanged head combines secure driving with built-in washer functionality
• Reliable coarse threading - UNC 1/4"-20 thread pattern ensures quick engagement and superior holding power in various materials
• Full-thread engagement - Completely threaded shank maximizes pull-out resistance and distributes stress evenly
• Industry-standard compliance - Meets ASME B18.6.3 specifications and RoHS 3 environmental regulations for quality assurance

Professional Applications & Engineering Value

These zinc-plated steel flanged hex tapping screws deliver exceptional engineering value in industrial fastening applications where thread-cutting capability is critical. The UNC coarse threading and blunt tip design work synergistically to create precise threads in aluminum, brass, cast iron, and sheet metal without pre-tapping, significantly reducing assembly time and eliminating cross-threading risks. The integrated flange eliminates the need for separate washers, providing wider bearing surface distribution while the external hex drive ensures high torque transmission during installation. This combination of features makes them ideal for high-volume manufacturing, metal fabrication, and maintenance operations where reliability and installation speed are paramount.

Specification Summary & Compliance

This 1/4"-20 thread cutting screw features UNC coarse threading with Class 2A tolerance standards, ensuring precise fit and reliable performance. Manufactured to meet ASME B18.6.3 specifications (SAE J933) for dimensional accuracy and mechanical properties. The product is fully RoHS 3 (2015/863/EU) compliant, containing no restricted hazardous substances. The zinc-plated steel construction provides corrosion resistance while maintaining the strength required for demanding industrial applications in aluminum, brass, cast iron, and sheet metal assemblies.