Dewalt DWADT1420 Combination Drill Tap 1/4-20

Product Description

The DEWALT DWADT1420 is a combination drill tap designed to drill and tap a 1/4-20 threaded hole in a single pass. This tool eliminates the need to swap between a drill bit and a separate tap, reducing steps in the threading process. It is suited for use in metal, wood, and composite materials where 1/4-20 machine thread fasteners will be installed. Electricians, HVAC technicians, plumbers, and general tradespeople use combination drill taps to speed up fastener installation on brackets, strut, panels, and equipment enclosures.

The DWADT1420 is appropriate for both residential and light commercial applications where 1/4-20 threaded connections are required. Common install scenarios include mounting electrical enclosures, securing HVAC components, attaching pipe hangers, and fastening equipment frames. The single-piece design works in standard drill/driver chucks and is intended for production or service environments where threading speed matters.

Key Features

• Combination drill-and-tap design cuts a pilot hole and 1/4-20 thread in one operation
• 1/4-20 thread specification suits a wide range of standard machine fasteners
• Compatible with standard drill/driver chucks for easy integration into existing tool setups
• Single-piece construction reduces tool changes and speeds up threading workflow
• Packaged individually, ready for single-unit replacement or restocking

Compatibility

Designed as an OEM-style replacement combination drill tap for applications requiring 1/4-20 machine thread, compatible with standard drill/driver chucks used across electrical, HVAC, plumbing, and general trade work.

Installation Notes

Installation should be performed by a qualified tradesperson using a variable-speed drill or driver set to an appropriate speed for the material being tapped. Secure the workpiece before drilling and apply cutting fluid when threading ferrous metals to extend tool life and improve thread quality. Power down any energized equipment before drilling into panels or enclosures. Follow applicable NEC, IPC, or IFGC guidelines for penetrations and fastener requirements in regulated installations.