Hertel 300-002005 Combo Drill Countersink 1/4 in Carbide

Product Description

The HERTEL 300-002005 is a combination drill and countersink designed for precision hole preparation in metal and other hard materials. Built from solid carbide, this tool drills a pilot hole and forms an 82-degree countersink in a single operation, reducing setup time and tool changes. The No. 3 trade size features a 1/4 inch body diameter, a 7/64 inch drill point diameter, and a 7/64 inch drill point length. Overall length is 2 inches. The plain cutting edge and right-hand cutting direction make it compatible with standard drill press and CNC machine spindles. Machinists, tool-and-die technicians, and fabricators use this tool for countersinking fastener seats to flush or below-flush depth.

This combo drill countersink is suited for production and job-shop environments where consistent countersink geometry is required. It is commonly used in metalworking applications including sheet metal fabrication, machine assembly, and fixture building where flathead screw or bolt seating is needed. The double end type extends tool life by providing two usable cutting ends. It is well matched to CNC machining centers, manual drill presses, and turret lathes running right-hand spindle rotation.

Key Features

• Solid carbide construction for hardness and wear resistance in demanding materials
• Combination drill and countersink reduces operations to a single tool pass
• 82-degree included angle matches standard flathead fastener geometry
• Double-end design provides two cutting ends, extending service life
• Plain cutting edge style for clean, consistent countersink finish
• Right-hand cut compatible with standard spindle rotation on most machines

Compatibility

Designed as a standard No. 3 combination drill and countersink for use in drill presses, CNC machining centers, and manual lathes with right-hand spindle rotation accepting a 1/4 inch body diameter tool.

Installation Notes

Installation and use of this tooling should be performed by a qualified machinist or tooling technician. Secure the tool firmly in the appropriate collet or drill chuck before operation and verify spindle speed is appropriate for the workpiece material and tool diameter. Always power down and lock out the machine before changing or inspecting tooling. Do not exceed the tool's rated cutting parameters for the material being machined.