Keo 906-000-240 Combo Drill Countersink Size 15 Cobalt

Product Description

The KEO 906-000-240 is a combination drill and countersink designed for drilling and countersinking in a single operation. Built from cobalt tool steel with a bright, uncoated finish, it delivers heat and wear resistance suited for cutting harder materials. The body measures 7/16 inch in diameter with an overall length of 2-3/4 inches. The drill point is 5/32 inch in diameter and 5/32 inch in length, ground to a 118-degree point angle. The included angle is 60 degrees, and the cutting edge style is bell-type with a bell diameter of 0.350 inch. Designed for right-hand cutting, this tool is well suited for machinists, fabricators, and maintenance professionals working with metal substrates.

This combo drill countersink is used in metalworking and light fabrication where pre-drilled countersink seats are required for flat-head fasteners. The double-end style extends tool life by providing two usable ends. It is appropriate for bench drill press work, CNC setups, and handheld drill applications in sheet metal, structural steel, and similar ferrous and non-ferrous materials. Trade size 15 makes it a standard selection for countersinking applications requiring a 5/32-inch pilot diameter.

Key Features

• Cobalt tool steel construction for improved heat resistance and durability in hard materials
• Bell-type cutting edge at a 60-degree included angle for clean countersink seats
• 118-degree drill point angle for accurate center starting and reduced walking
• Double-end design provides two cutting ends, extending tool service life
• Bright uncoated finish maintains sharp cutting geometry without added coating thickness
• Right-hand cut compatible with standard drill press and handheld drill operation

Compatibility

Designed as a standard trade size 15 combo drill countersink suitable for countersinking flat-head fastener seats in ferrous and non-ferrous metals using drill presses or compatible handheld equipment.

Installation Notes

Installation and use of this tool should be performed by qualified machinists or trade professionals familiar with drill press and cutting tool safety practices. Secure the workpiece firmly before operation and set spindle speed appropriate to the material being cut. Inspect both cutting ends before use and replace the tool if chipping or excessive wear is observed. Always wear appropriate eye protection when operating cutting tools.