S-90096A340 1/4"-20 x 2" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
• Enhanced material compatibility with thread cutting design that creates strong, permanent threads in aluminum, brass, cast iron, and sheet metal
• Increased installation efficiency through coarse UNC threading that reduces cross-threading and speeds assembly processes
• Optimal torque transmission via external hex drive design that prevents tool slippage and ensures secure fastening
• Distributed load bearing with integrated flange that eliminates the need for separate washers and provides superior clamping force
• Full-length thread engagement with 2" fully threaded shank for maximum holding power across the entire fastener length
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and RoHS 3 environmental standards

Professional Applications & Engineering Value

This heavy-duty tapping screw delivers exceptional engineering value through its thread cutting technology and zinc-plated steel construction, specifically engineered to solve common fastening challenges in metal fabrication and assembly. The F-type tapping screw design eliminates the need for pre-tapped holes, significantly reducing installation time and labor costs while creating durable, vibration-resistant threads in aluminum, brass, cast iron, and sheet metal applications. The combination of coarse UNC threading and external hex drive ensures reliable performance in high-vibration environments, making it ideal for automotive components, machinery assembly, and structural metalwork where flanged hex screws provide both mechanical strength and installation efficiency.

Specification Summary & Compliance

This 1/4"-20 flanged hex tapping screw features precise UNC coarse threading with standard Class 2A thread tolerances for consistent performance. The 2" length and fully threaded design ensure maximum engagement in various material thicknesses. Manufactured to meet ASME B18.6.3 specifications (SAE J933) for dimensional accuracy and mechanical properties, with full RoHS 3 (2015/863/EU) compliance for environmental safety. The product maintains 0.25" thread diameter with proper 0.221" drill bit size recommendations for optimal thread formation in specified materials.