Hertel H-81155L04060 Combo Drill Countersink Hss 6 in

Product Description

The HERTEL H-81155L04060 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 delivers reliable performance in metal, wood, and composite materials. It features a 5/16 inch body diameter, a 1/8 inch drill point diameter, and a 118-degree drill point angle paired with a 90-degree included countersink angle. At 6 inches overall length, it is classified as a long-length tool and suits applications where standard-length reach is insufficient. The double end type provides added utility. Machinists, tool and die workers, and fabricators are the primary users of this type of tooling.

This combo drill countersink is suited for production and maintenance machining environments where countersunk fastener holes must be drilled and chamfered in a single pass. The plain cutting edge style handles general-purpose countersinking tasks across a range of workpiece materials. The non-tapered, non-aircraft-style configuration makes it appropriate for standard shop and field applications. Its long overall length allows access to recessed or deep work surfaces that shorter tooling cannot reach.

Key Features

• Combination drill and countersink completes drilling and countersinking in one pass
• High-speed steel construction provides durability across a range of materials
• Bright uncoated finish suited for general-purpose machining
• 118-degree drill point angle with 90-degree included countersink angle
• Long-length tool at 6 inches OAL for extended reach applications
• Double end type for added tool life and versatility

Compatibility

Designed as an OEM-style replacement or direct substitute for standard size 4 combination drill countersinks used in general machining, fabrication, and maintenance applications.

Installation Notes

This tool is installed in a drill press, milling machine, or hand drill with an appropriate collet or chuck rated for the 1/8 inch point diameter. Secure the workpiece firmly before operation and confirm spindle speed is appropriate for the workpiece material and tool diameter. Inspect the cutting edges before use and replace the tool if chipping or wear is observed. Follow applicable shop safety procedures including eye protection and proper chip management.