Hertel H-81185010600 Combo Drill Countersink 1/8 in Hss

Product Description

The HERTEL H-81185010600 is a combination drill and countersink designed for simultaneous drilling and countersinking in a single operation. Built from high-speed steel (HSS) with a bright, uncoated finish, this double-end tool features a 1/8 inch body diameter, a 3/64 inch drill point diameter, and a 118-degree drill point angle. The 60-degree included angle prepares holes for flat-head fasteners in metal, wood, and composite materials. With an overall length of 5 inches, this long-length tool suits a range of bench and CNC drilling applications. Machinists, fabricators, and tool-and-die tradespeople are the primary users.

This combo drill countersink is suited for countersinking operations in light fabrication, maintenance, and production environments. The double-end configuration extends tool life by providing two usable ends before replacement. It is appropriate for use in drill presses, CNC machining centers, and hand-held drilling equipment where controlled depth and angle are required. The plain cutting edge style and uncoated HSS construction make it well-suited for ferrous and non-ferrous metals as well as general-purpose shop work.

Key Features

• Double-end design extends usable tool life before replacement
• 118-degree drill point angle for standard twist-drill entry geometry
• 60-degree included angle for flat-head fastener seating
• High-speed steel construction resists heat and wear during cutting
• Bright uncoated finish for easy visual wear inspection
• Long-length body at 5 inches overall for extended reach applications

Compatibility

Designed as an OEM-style replacement or direct substitution for trade size 1 combo drill countersinks with a 1/8 inch body diameter and 60-degree included angle in standard drill press and CNC tooling setups.

Installation Notes

Installation and operation should be performed by qualified machinists or tradespeople familiar with rotating cutting tools. Secure the workpiece and ensure the drill chuck or collet is properly tightened before operation. Always wear appropriate eye protection and follow shop safety protocols when operating drilling or countersinking equipment. Inspect both cutting ends for wear or chipping before each use and replace the tool when cutting performance degrades.