Keo 906-000-107 Combo Drill Countersink Size 4 Hss

Product Description

The KEO 906-000-107 is a combination drill and countersink designed for simultaneous drilling and countersinking in a single operation. Built from high-speed steel with a bright, uncoated finish, this tool features a 5/16-inch body diameter, a 1/8-inch drill point diameter, and a 118-degree drill point angle. The 60-degree included angle and radius cutting edge style make it suited for creating clean, chamfered entry points in metal and similar materials. It is used primarily by machinists, tool and die workers, and general metalworking tradespeople operating drill presses, CNC machines, or hand-held power tools.

This combo drill countersink is appropriate for general metalworking and fabrication environments where a size 4 tool is specified. With an overall length of 2-1/8 inches and a right-hand cut, it fits standard drill chucks and is well matched to production and maintenance drilling applications where countersinking and center drilling need to be completed efficiently in one pass.

Key Features

• High-speed steel construction for durability in metal cutting applications
• 118-degree drill point angle for standard metalworking entry geometry
• 60-degree included angle with radius cutting edge for clean countersink profiles
• Bright, uncoated finish suitable for use with cutting fluids
• Double end type extends usable tool life
• Right-hand cut compatible with standard drill chucks and spindles

Compatibility

Designed as an OEM-style replacement or standard tooling option for metalworking operations requiring a size 4 combination drill countersink with a 5/16-inch body diameter and right-hand cut.

Installation Notes

This tool is installed and used by machinists and metalworking tradespeople. Secure the tool firmly in the drill chuck or collet before operation and verify spindle speed is appropriate for the workpiece material and tool diameter. Power down and isolate the machine before changing tooling. Use appropriate cutting fluid to extend tool life and improve finish quality.