Hertel H-8111500A000 Combo Drill Countersink 1/8 in Hss

Product Description

The HERTEL H-8111500A000 is a combo drill countersink designed to drill and countersink in a single pass. Built from high-speed steel (HSS) with a bright, uncoated finish, this tool handles both operations without a tool change. It carries a trade size of 5/0, a body diameter of 0.125 inches, and a 118-degree drill point angle. The included angle is 60 degrees, making it suited for standard countersink profiles. Overall length is 1.25 inches. The double-end configuration extends tool life by providing two usable cutting ends. Metalworking professionals and machinists are the primary users of this type of combination tool.

This combo drill countersink is used in general metalworking, fabrication, and machining applications where a countersunk hole is required in a single operation. Its plain cutting edge style suits standard through-hole and countersink work on ferrous and non-ferrous materials. The compact 1.25-inch overall length fits standard drill chucks and collets used in bench drills, CNC machines, and hand-held drilling equipment. It is not designed for aircraft-style applications and is not a long-length tool.

Key Features

• Combo drill and countersink in one tool — single-pass operation eliminates tool changes
• High-speed steel construction for durability across ferrous and non-ferrous materials
• Double-end design provides two cutting ends, extending usable tool life
• 118-degree drill point angle suits standard metalworking applications
• 60-degree included angle for standard countersink profiles
• Bright uncoated finish for easy visual inspection of cutting edge condition

Compatibility

Designed as a standard combo drill countersink for use in drill presses, CNC machining centers, and hand-held drilling equipment that accept straight-shank tooling in 0.125-inch body diameter.

Installation Notes

Installation and use should be performed by a qualified machinist or metalworking professional. Secure the workpiece firmly before drilling and verify chuck or collet runout before use. Always wear appropriate eye and hand protection when operating cutting tools. Follow equipment manufacturer guidelines for spindle speed selection based on material type and tool diameter.