Cleveland C00944 Combo Drill Countersink Set 5pc Hss

Product Description

The CLEVELAND C00944 is a 5-piece combination drill and countersink set made from high-speed steel (HSS) for right-hand cutting in metal fabrication, mechanical assembly, and general machining applications. Each tool in the set is double-ended, delivering a drill point and a 60-degree countersink profile in a single tool pass. Body diameters range from 0.125 to 0.438 inches, and drill point diameters range from 0.047 to 0.188 inches. Overall tool lengths range from 1.25 to 2.75 inches. The plain cutting edge and bright uncoated finish make these tools well-suited for use in standard drill presses, lathes, and CNC equipment. The set is stored in a plastic case for organization and transport.

Combination drill and countersinks are used wherever a center-drilled starting hole and a countersunk seat are needed in the same operation. Common applications include preparing workpieces for lathe centers, creating countersunk holes for flat-head fasteners, and spotting holes before drilling on a mill or press. This set covers five standard trade sizes (1 through 5), with drill point diameters of 3/64, 5/64, 7/64, 1/8, and 3/16 inches, making it suitable for a broad range of light to medium workpiece diameters. Machinists, tool-and-die makers, and general metalworking shops are the primary users.

Key Features

• 5-piece set covering trade sizes 1 through 5 in a single plastic storage case
• High-speed steel construction for durability across ferrous and non-ferrous materials
• 60-degree included angle matches standard lathe center and flat-head fastener geometry
• Double-ended design extends tool life by providing two usable cutting ends per piece
• Plain cutting edge style for general-purpose countersinking without chip-breaking geometry
• Bright uncoated finish suitable for use with standard cutting fluids and coolants

Compatibility

Designed as a standard Series 998 combination drill and countersink set compatible with drill presses, lathes, and CNC equipment accepting straight-shank tooling within the body diameter range of 0.125 to 0.438 inches.

Installation Notes

Install into a drill chuck or collet sized to match the tool body diameter before starting the spindle. Secure the workpiece firmly before operation. Apply cutting fluid appropriate for the workpiece material to extend tool life and improve surface finish. Inspect each tool end for wear before use, and replace or rotate to the unused end when the cutting edge shows signs of dulling.