Hertel H-81115000000 Hss Combo Drill Countersink Set 1-5

Product Description

The HERTEL H-81115000000 is a five-piece high speed steel combination drill and countersink set covering trade sizes No. 1 through No. 5. Each double-end tool combines a drill point with a countersink profile in a single shank, allowing a machinist or fabricator to drill and countersink in one operation without a tool change. Body diameters range from 1/8 inch to 7/16 inch, and drill point diameters run 1/8 inch across the set. The plain edge geometry suits general-purpose metalworking in steel, aluminum, and similar materials. High speed steel construction provides durability for production and maintenance environments alike.

This set is suited for machine shops, maintenance departments, and fabrication operations where combo drill countersinks are used to prepare center holes for lathe work, create countersunk screw seats, or locate workpieces on CNC and manual equipment. The No. 1 through No. 5 range covers the most common trade sizes encountered in everyday metalworking tasks. The double-end design doubles tool life by providing a second usable end before the tool is retired. Packaging includes one complete set of five tools per unit.

Key Features

• High speed steel construction for durability in general-purpose metalworking
• Double-end design extends usable tool life
• Combines drill and countersink functions in a single tool for one-step operation
• Plain edge geometry for consistent, clean cutting performance
• Covers five trade sizes (No. 1 through No. 5) in one set
• Body diameters from 1/8 inch to 7/16 inch across the set

Compatibility

Designed as a standard OEM-style combination drill and countersink set compatible with drill presses, lathes, CNC machines, and manual milling equipment that accept straight-shank combo drill countersink tooling in trade sizes No. 1 through No. 5.

Installation Notes

Installation and use of combination drill countersinks is typically performed by machinists or qualified fabricators. Secure the workpiece firmly before operation and verify spindle speed is appropriate for the material and tool diameter. Inspect each tool for chips or wear before use, and never force a worn or damaged tool. Follow applicable shop safety standards and equipment manufacturer guidelines for toolholder torque and runout specifications.