Keo 906-000-161 Combo Drill Countersink Size 7 Hss

Product Description

The KEO 906-000-161 is a combination drill and countersink designed to perform pilot drilling and countersinking in a single operation. Built from high-speed steel with a bright, uncoated finish, this tool is suited for metalworking, fabrication, and general machining applications where precision entry points are required before fastener seating. The 906-000-161 carries a trade size of 7, a 0.625-inch body diameter, a 118-degree drill point angle, and an 82-degree included angle for the countersink profile. It is commonly used by machinists, tool and die workers, and metal fabricators working with drill presses, lathes, or CNC equipment.

This combo drill countersink is intended for use in ferrous and non-ferrous metals, plastics, and similar materials where a clean countersunk seat is needed for flathead fasteners or deburring operations. With a 0.25-inch drill point diameter and a 3.25-inch overall length, the 906-000-161 fits standard drill chucks and collet systems used in bench and floor-mounted machines. Its right-hand cut orientation is consistent with conventional drill press and lathe setups. The plain cutting edge style and non-tapered, non-insertable design make this a straightforward single-piece tool with no moving parts to maintain.

Key Features

• High-speed steel construction for durability in metal and plastic cutting applications
• 118-degree drill point angle combined with 82-degree included countersink angle in one tool
• Bright, uncoated finish suitable for general-purpose machining without coating wear concerns
• Right-hand cut direction compatible with standard drill press and lathe setups
• Double-end type design extends usable tool life
• 0.625-inch body diameter with 3.25-inch overall length for standard chuck and collet compatibility

Compatibility

Designed as a general-purpose combo drill countersink for use in drill presses, lathes, and CNC machines equipped with standard drill chucks or collets accepting a 0.625-inch body diameter tool.

Installation Notes

Installation and operation should be performed by qualified machinists or fabricators familiar with rotating cutting tools. Secure the workpiece firmly before engaging the tool to prevent movement during cutting. Ensure the spindle speed is appropriate for the material being machined and the tool diameter before starting the cut. Eye protection and appropriate guarding should be in place in accordance with applicable shop safety standards.