Guhring 9005940011900 Combo Drill Countersink Hss

Product Description

The GUHRING 9005940011900 is a combination drill countersink designed to drill and countersink in a single operation, reducing cycle time and tool changes on the bench or machine. Built from high speed steel with a bright polished finish, it runs a 3/64 inch point diameter on a 1/8 inch body diameter. The 60-degree included angle and radius cutting edge style make it suited for deburring and seating flat-head fasteners in metal fabrication, sheet metal, and general machining work. The double-end configuration extends usable tool life. Overall length is approximately 31.30 millimeters. This tool is installed and used by machinists, tool-and-die workers, and sheet metal fabricators.

This combo drill countersink fits applications where a clean pilot hole and countersink must be produced in one pass. Common uses include preparing holes for flat-head machine screws in aluminum, mild steel, and similar metals. The Series 594 designation places it within GUHRING's standard combination drill countersink line. Right-hand cutting direction is standard for conventional spindle rotation. At 0.009 pounds, the tool is lightweight and compatible with drill presses, CNC machining centers, and hand-held drill motors with appropriate collet or chuck tooling.

Key Features

• Combination drill and countersink in one tool — eliminates a separate tool change
• High speed steel construction for general-purpose cutting in ferrous and non-ferrous metals
• Bright polished finish reduces chip adhesion and friction at the cutting edge
• 60-degree included angle seats standard flat-head fasteners accurately
• Double-end design provides two usable cutting ends, extending tool service life
• Right-hand cut for use with standard clockwise spindle rotation

Compatibility

Designed as a standard combination drill countersink for use in drill presses, CNC machining centers, and hand-held drill motors equipped with a compatible collet or drill chuck accepting a 1/8 inch body diameter shank.

Installation Notes

A machinist or fabricator should secure the tool in a properly sized collet or drill chuck before operation. Verify spindle rotation is set to right-hand before engaging the workpiece. Always clamp the workpiece securely to prevent movement during the combined drilling and countersinking operation. Use appropriate cutting fluid for the workpiece material to extend tool life and improve finish quality.