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The VALUE COLLECTION 156400004120006 is a combo drill countersink designed for simultaneous drilling and countersinking in a single operation. Built from high-speed steel (HSS) with a bright, uncoated finish, this tool handles ferrous and non-ferrous materials in production and maintenance applications. The 3/8 inch body diameter and 9/64 inch drill point make it well-suited for creating clean, properly seated countersunk holes without the need for a separate tool change. At 6 inches overall length, it qualifies as a long-length tool, offering reach in deeper workpieces. The right-hand cutting direction and plain cutting edge style suit standard drill press and hand-drill setups used by machinists, fabricators, and maintenance technicians.
This combo drill countersink carries a trade size of 4-1/2 and is intended for countersinking applications where flathead fasteners must sit flush or below the work surface. The 60-degree included angle is a standard geometry for flathead machine screws. The double end type provides two usable cutting ends, extending tool life in high-use environments. It is not aircraft style, not tapered, and does not use an insertable cutter head, making it a straightforward, solid-body HSS tool for general shop and field use.
Designed as a general-purpose combo drill countersink for use in standard drill presses, CNC drilling operations, and hand drills accepting 3/8 inch body tooling with right-hand cutting direction.
Installation and use should be performed by qualified machinists or maintenance technicians familiar with rotating cutting tools. Secure the workpiece firmly before operation and confirm the drill or press speed is appropriate for the material being countersunk. Wear appropriate eye and hand protection. Inspect the cutting edges before each use and remove the tool from service if chipping or excessive wear is observed.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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