Cleveland C46276 Combo Drill Countersink Size 15 Hss

Product Description

The CLEVELAND C46276 is a combination drill and countersink designed for simultaneous drilling and countersinking in a single pass. Built from high-speed steel with a bright, uncoated finish, this tool handles center-drilling and countersinking operations in one step, reducing setup time on the drill press or lathe. It features a 118-degree drill point angle, a 60-degree included countersink angle, and a bell-style cutting edge. The 7/16-inch body diameter and 5/32-inch drill point make it well suited for trade size 15 applications. Licensed machinists, tool-and-die workers, and general metalworking shops are the primary users of this tool.

This combination drill countersink is used in production and job-shop environments where consistent center holes and countersunk seats are required before turning, grinding, or fastener installation. It is suited for work on alloy tool steel, aluminum, carbon steel, and cast iron. The double-end design extends tool life by providing two usable cutting ends. Overall length is 2.75 inches, making it compact enough for standard drill chucks and tool holders without excessive overhang.

Key Features

• Combination drill and countersink removes the need for separate tooling operations
• High-speed steel construction provides heat and wear resistance across common metalworking materials
• Bell-style cutting edge with 60-degree included angle for standard countersink seats
• 118-degree drill point angle for general-purpose center drilling
• Double-end design doubles usable tool life
• Right-hand cut for use in standard clockwise-rotating spindles

Compatibility

Designed for use on alloy tool steel, aluminum, carbon steel, and cast iron workpieces. Compatible with standard drill chucks and tool holders accepting a 7/16-inch body diameter shank. Suitable for drill press, lathe, and milling machine applications requiring trade size 15 center drilling and countersinking.

Installation Notes

This tool is installed in a standard drill chuck or collet sized to accept the 7/16-inch body. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Run at speeds appropriate for the workpiece material and tool diameter per standard machining references. Secure the workpiece firmly before operation to prevent movement during drilling.