Hertel H-81155L05050 Combo Drill Countersink Size 5 Hss

Product Description

The HERTEL H-81155L05050 is a combination drill and countersink designed for simultaneous drilling and countersinking in a single pass. Built from high speed steel with a bright polished finish, this tool features a 7/16 inch body diameter, a 3/16 inch drill point diameter, and a 118-degree drill point angle. The included angle is 90 degrees, making it suited for standard countersunk fastener seating. With an overall length of 5 inches, this is a long-length tool configured for deeper reach applications. It is installed and used by machinists, tool and die technicians, and maintenance professionals working in metal fabrication and general shop operations.

This combo drill countersink is sized as a Number 5 trade size tool and is intended for countersinking operations in metalworking environments. The double end type and plain cutting edge style make it a straightforward, utility-grade cutting tool for production and maintenance use. It is well suited for pre-drilling and countersinking screw holes in ferrous and non-ferrous metals where a clean, consistent countersink seat is required. The long-length configuration provides additional reach compared to standard-length versions of the same diameter.

Key Features

• High speed steel construction for durability in metal cutting applications
• Bright polished finish reduces friction and aids chip evacuation
• 118-degree drill point angle compatible with standard twist drill geometry
• 90-degree included angle matches common countersunk fastener specifications
• Double end design extends tool life by providing two usable cutting ends
• Long-length tool at 5 inches overall length for extended reach

Compatibility

Designed as an OEM-style replacement and standard tooling option for metalworking setups requiring a Number 5 trade size combination drill countersink with a 7/16 inch body diameter and 90-degree included angle.

Installation Notes

This tool is used by machinists and maintenance technicians in drill press, lathe, or hand-drill applications. Secure the tool firmly in a matching collet or chuck before operation and verify spindle speed is appropriate for the workpiece material and tool diameter. Always wear appropriate eye protection and ensure the workpiece is properly clamped before cutting. Do not exceed the recommended feed rate for high speed steel tooling in hard or abrasive materials.