Keo 906-000-151 Combo Drill Countersink Size 7 Hss Tin

Product Description

The KEO 906-000-151 is a combination drill and countersink tool designed to perform both drilling and countersinking operations in a single pass. Built from high-speed steel with a titanium nitride coating, it delivers extended tool life in ferrous and non-ferrous materials. The tool features a 5/8 inch body diameter, a 1/4 inch drill point diameter, a 118-degree drill point angle, and a 60-degree included angle for the countersink. With an overall length of 3-1/4 inches and a right-hand cutting direction, it is sized for standard machine tool setups. Machinists, tool and die workers, and precision fabricators use this style of tool for deburring, chamfering, and hole preparation.

This combo drill countersink is suited for use on drill presses, CNC machining centers, and manual lathes where countersinking and center-drilling must be completed efficiently. The plain cutting edge style and double-end design make it a practical choice for production environments and job shop applications. It is appropriate for use in metal fabrication, aerospace prep work, and general machining where consistent countersink geometry is required across multiple workpieces.

Key Features

• High-speed steel construction provides strength and wear resistance across a range of workpiece materials
• Titanium nitride coating reduces friction and extends cutting life compared to uncoated HSS tooling
• 118-degree drill point angle suited for standard center drilling and hole starting
• 60-degree included countersink angle for countersinking standard fastener head profiles
• Double-end design allows use of either end, extending usable tool life before replacement
• Right-hand cut, plain cutting edge style compatible with conventional spindle rotation

Compatibility

Designed as an OEM-style replacement or direct-use combo drill countersink for standard machine tool holders accepting a 5/8 inch shank body in drill press, lathe, or CNC machining center applications.

Installation Notes

This tool is installed by a machinist or tooling technician into a compatible tool holder or chuck rated for the 5/8 inch body diameter. Ensure the machine spindle is fully stopped and the tool holder is securely locked before seating or removing the tool. Use appropriate cutting fluid or lubricant for the workpiece material to preserve the titanium nitride coating and maintain dimensional accuracy. Verify spindle rotation direction is set to right-hand before operation.