Eagle Cutting Tool DT-4375-14-I 7/16-14 Nc Hss Combo Drill Tap

Product Description

The EAGLE CUTTING TOOL DT-4375-14-I is a combination drill and tap tool designed to drill and thread a hole in a single operation. Sized for 7/16-14 NC (National Coarse) threading, this tool eliminates the need for a separate drill bit and tap, reducing setup time and tool changes on the job. Constructed from high-speed steel (HSS), it handles threading in steel, aluminum, and other common metals found in HVAC equipment, plumbing fixtures, and electrical enclosures. Weighing 0.715 pounds, it is suitable for use in standard drill presses, CNC machines, and hand-held power drills with appropriate speed control.

This combination drill tap is used in trade and light industrial applications where 7/16-14 NC threaded holes are required. Common scenarios include fabricating mounting brackets, threading sheet metal assemblies, and field repairs on mechanical systems. It suits machinists, maintenance technicians, and trade professionals who work with tapped holes in ferrous and non-ferrous metals on a regular basis.

Key Features

• Combination drill and tap completes drilling and threading in one pass
• 7/16-14 NC thread specification for National Coarse applications
• High-speed steel (HSS) construction for durability in metal threading operations
• Reduces tool changes and setup time compared to using separate drill and tap tools
• Compatible with standard drill chucks and CNC toolholders accepting the shank diameter

Compatibility

Designed as a standard 7/16-14 NC combination drill tap suitable for use in ferrous and non-ferrous metals where National Coarse threaded holes are required.

Installation Notes

Installation should be performed by a qualified machinist or trade technician familiar with tapping operations. Use appropriate cutting fluid to extend tool life and improve thread quality. Set spindle speed according to the material being tapped — slower speeds are recommended for harder metals. Secure the workpiece firmly before beginning the operation to prevent movement that could break the tool or produce out-of-tolerance threads.

Technical Specifications

• Thread Size: 7/16-14 NC (National Coarse)
• Material: High-Speed Steel (HSS)
• Weight: 0.715 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: DT-4375-14-I