Hertel 300-006003 Combo Drill Countersink No. 3 Solid Carbide

Product Description

The HERTEL 300-006003 is a solid carbide combination drill and countersink designed to perform drilling and countersinking in a single pass. Built to trade size No. 3 with a 1/4 inch body diameter, this tool features a 118-degree drill point angle and an 82-degree included angle for countersinking. The bright polished finish reduces friction and helps with chip evacuation. At 4 inches overall length, it is classified as a long-length tool and is suited for machinists, tool and die technicians, and fabricators working on ferrous and non-ferrous materials.

This combination drill countersink is intended for general machining and metalworking applications where a center drill and countersink operation must be performed in one step. The right-hand cutting direction and plain cutting edge style make it compatible with standard drill presses, CNC machining centers, and manual lathes. The double end type extends usable tool life by offering two working ends. No tapered shank or insertable cutter head is present, keeping setup simple and direct.

Key Features

• Solid carbide construction for durability and rigidity in demanding machining environments
• 118-degree drill point angle with 82-degree included countersink angle in a single tool
• Bright polished finish for reduced friction and improved chip flow
• Double end design extends tool life by providing two usable cutting ends
• Long-length tool at 4 inches OAL for reach in deeper setups
• Right-hand cut with plain cutting edge for compatibility with standard spindle directions

Compatibility

Designed as a standard trade size No. 3 combination drill countersink compatible with drill presses, CNC lathes, and manual machining equipment accepting straight-shank tooling with a 1/4 inch body diameter.

Installation Notes

Installation and use of this tool should be performed by qualified machinists or tooling technicians. Secure the tool firmly in a collet or drill chuck rated for the body diameter before operation. Ensure spindle speed is appropriate for carbide tooling in the workpiece material before engaging the cut. Inspect both cutting ends for chipping or wear before each use, as solid carbide can fracture if run at incorrect feeds and speeds or if the setup has excessive runout.