Hertel H-81155L07060 Combo Drill Countersink Size 7 Hss

Product Description

The HERTEL H-81155L07060 is a combination drill and countersink tool designed for simultaneous drilling and countersinking operations in a single pass. Built from high-speed steel with a bright, uncoated finish, this tool features a trade size 7 designation and a 5/8 inch body diameter. The drill point measures 1/4 inch in diameter with a 1/4 inch point length and a 118-degree drill point angle. The included angle for the countersink portion is 90 degrees. Overall length is 6 inches, classifying it as a long-length tool. The plain cutting edge and double end type make it a reliable choice for production and maintenance machining environments.

This combo drill countersink is suited for metalworking applications where a countersunk hole is required to seat flat-head fasteners flush with or below a workpiece surface. It performs well in general fabrication shops, aerospace maintenance operations, and industrial production settings. The long-length design provides additional reach for deeper work applications. The tool is not tapered and does not use an insertable cutter head, making it a straightforward, solid-body tool for standard countersinking tasks.

Key Features

• High-speed steel construction for durability across a range of metalworking materials
• 118-degree drill point angle for efficient material entry
• 90-degree included countersink angle to seat standard flat-head fasteners
• Double end type extends usable tool life
• Long-length design at 6 inches OAL for added reach in deep or offset applications
• Bright, uncoated finish suitable for general-purpose machining use

Compatibility

Designed as an OEM-style replacement and standard production tool for metalworking applications requiring a trade size 7 combination drill countersink with a 90-degree countersink angle and 5/8 inch body diameter.

Installation Notes

This tool is installed in a compatible drill press, milling machine, or CNC setup by a machinist or toolroom technician. Secure the shank firmly in an appropriate collet or drill chuck rated for the body diameter before operation. Power down and de-energize all equipment before changing or inspecting tooling. Follow applicable shop safety procedures and machine manufacturer guidelines for speeds and feeds based on workpiece material.