Hertel H-81154L03060 Combo Drill Countersink No. 3 Hss

Product Description

The HERTEL H-81154L03060 is a combination drill and countersink designed for simultaneous drilling and countersinking operations in a single pass. Built from high speed steel with a bright polished finish, this tool accepts a No. 3 trade size and features a 1/4 inch body diameter with a 7/64 inch drill point diameter. The 82-degree included angle and 118-degree drill point angle make it suited for producing clean, accurately sized countersinks in metal and similar materials. At 6 inches overall length, it falls in the long-length category, providing added reach for deeper or harder-to-access workpieces. Machinists, toolmakers, and fabricators use this style of tool to prep holes for flat-head fasteners without requiring separate operations.

This combo drill countersink is intended for use in machining, fabrication, and metalworking applications where countersunk holes are required for flat-head screws or rivets. The plain cutting edge style and double end type allow for straightforward use in drill presses, lathes, or CNC setups. The long-length design gives access to recessed areas or extended workpieces that standard-length tools cannot reach. It is not aircraft style and does not use an insertable cutter head, keeping setup simple and direct.

Key Features

• Combines drilling and countersinking in a single pass, reducing setup time
• No. 3 trade size with 1/4 inch body diameter for accurate fitment in standard holders
• High speed steel construction for durability across a range of metal workpieces
• Bright polished finish reduces friction and aids chip evacuation
• Long-length design at 6 inches OAL provides extended reach
• Double end type and plain cutting edge for straightforward use

Compatibility

Designed as an OEM-style replacement or direct-use combo drill countersink for standard No. 3 trade size applications in metalworking and fabrication environments.

Installation Notes

This tool is installed and used by machinists and metalworking professionals in drill presses, lathes, or CNC machining centers. Secure the tool properly in a compatible chuck or collet before operation and confirm spindle speed is appropriate for the workpiece material and tool diameter. Inspect the cutting edges before each use and do not run a damaged or dull tool. Follow applicable shop safety procedures and machine manufacturer guidelines when operating rotating cutting tools.