Keo 907-000-176 Combo Drill Countersink Size 7 Hss

Product Description

The KEO 907-000-176 is a combination drill and countersink tool machined from high-speed steel with a bright, uncoated finish. It performs two operations in a single pass: drilling a pilot hole and cutting a countersunk seat for flat-head fasteners. The tool carries a trade size of 7 with a 5/8-inch body diameter, a 1/4-inch drill point diameter, and an 82-degree included angle at the countersink. Overall length is 6 inches, qualifying it as a long-length tool. It is designed for right-hand cutting with a plain cutting edge and a double end configuration, extending usable tool life.

This combo drill countersink is suited for metalworking, fabrication, and general machining applications where a countersunk hole must be prepared for flush-mount screws or rivets. The 118-degree drill point angle is appropriate for steel, aluminum, and other common ferrous and non-ferrous materials. It is a standard bench or drill-press tool used by machinists, tool-and-die workers, and metalworking tradespeople in production and maintenance settings. The double-end design allows the operator to flip the tool when one end wears, reducing tooling cost per hole.

Key Features

• High-speed steel construction for durability across ferrous and non-ferrous materials
• Combined drill and countersink in one pass reduces setup time
• Double-end design doubles usable tool life per piece
• 118-degree drill point angle for general-purpose metal drilling
• 82-degree included angle produces a standard countersunk seat
• Long-length body at 6 inches total provides reach for deeper work setups

Compatibility

Designed as a standard replacement or stock tool for size 7 combo drill countersink applications in general metalworking, fabrication shops, and maintenance environments where 82-degree countersunk fastener seats are required.

Installation Notes

Install the tool securely in a drill press, milling machine, or appropriate hand-held power tool chuck rated for the shank diameter before use. Ensure the workpiece is firmly clamped before beginning the cut. Inspect both cutting ends before each use and rotate to the second end when the first shows wear. Use cutting fluid appropriate to the workpiece material to extend tool life and maintain hole quality.