Keo 906-000-104 Combo Drill Countersink Size 3 Hss Tin

Product Description

The KEO 906-000-104 is a combination drill and countersink designed for precise hole preparation and countersinking in a single operation. Built from high-speed steel (HSS) with a titanium nitride (TiN) coating, it delivers extended tool life and reduced friction in production and maintenance environments. The body measures 1/4 inch in diameter with a 7/64-inch drill point diameter, a 7/64-inch drill point length, and a 2-inch overall length. The 118-degree drill point angle and 90-degree included angle make it well suited for standard countersinking work where accuracy and repeatability matter.

This combo drill countersink is used in metalworking, fabrication, and maintenance applications where a clean, chamfered hole entry is required before fastener installation. The right-hand cutting direction and plain cutting edge style suit it for use in conventional drill presses, CNC machining centers, and manual lathes. The double end type provides two usable cutting ends, extending the service interval. It is typically selected by machinists, tool-and-die technicians, and maintenance mechanics working with ferrous and non-ferrous materials.

Key Features

• High-speed steel construction with titanium nitride (TiN) coating for extended tool life
• 118-degree drill point angle for standard center-drilling and countersinking
• 90-degree included angle suits common countersunk fastener specifications
• Double-end design provides two working ends per tool
• Right-hand cut with plain cutting edge for use in standard rotating equipment
• Compact 2-inch overall length fits tight setups and short-reach toolholders

Compatibility

Designed as a trade size 3 combination drill countersink compatible with standard 1/4-inch collets, chucks, and drill press spindles used in metalworking and machining applications.

Installation Notes

Installation is performed by machinists or maintenance technicians using a drill press, lathe, or CNC spindle with a compatible collet or chuck sized for a 1/4-inch shank. Always power down and lock out the machine before loading or removing the tool. Secure the workpiece firmly before beginning the cut to prevent movement and tool breakage. Inspect both cutting ends for wear or chipping before use.