Keo 906-000-074 Combo Drill Countersink 1/8 in Hss Tin

Product Description

The KEO 906-000-074 is a combination drill and countersink tool machined from high-speed steel with a titanium nitride (TiN) coating. It performs two operations in a single pass: drilling a pilot hole and cutting a countersink recess. The body diameter measures 0.125 inches, the drill point diameter is 0.047 inches, and the overall length is 1.25 inches. The 90-degree included angle and 118-degree drill point angle make it suited for standard countersunk fastener preparation. The TiN coating extends tool life by reducing friction and increasing surface hardness. This tool is installed and used by machinists, metalworkers, and general fabricators working with ferrous and non-ferrous materials.

This combo drill countersink is designed for countersinking applications on production and maintenance work. Its plain cutting edge style and right-hand cut make it compatible with standard drill press and CNC setups. The double end type allows the tool to be flipped when one end wears, extending usable life. Trade size is listed as number 1, which corresponds to the 3/64 inch point diameter. It is well suited for light-duty countersinking tasks where a compact 1.25-inch OAL tool is appropriate, such as work in confined areas or on small workpieces.

Key Features

• High-speed steel construction with titanium nitride coating for extended tool life
• 90-degree included angle for standard countersunk fastener recesses
• 118-degree drill point angle for efficient material penetration
• Double end design allows tool to be reversed when one end dulls
• Right-hand cut, plain cutting edge style for use in standard rotating setups
• Compact 1.25-inch overall length suited for restricted-access applications

Compatibility

Designed as a standard trade size number 1 combo drill countersink for use in drill presses, CNC machines, and hand-held drilling equipment that accepts this tool shank configuration.

Installation Notes

This tool is installed and operated by machinists or fabricators using standard drill press or CNC equipment. Ensure the spindle is fully stopped and the machine is powered down before changing or inspecting the tool. Use appropriate workholding to secure the workpiece before operation. Follow shop safety protocols and applicable OSHA machine-guarding guidelines when operating rotary cutting tools.