Internal Tool 168-1090 Corner Rounding End Mill 1/2 in 5 Flute

Product Description

The INTERNAL TOOL 168-1090 is a double-end, solid carbide corner rounding end mill designed for precision edge profiling in metalworking applications. With a 1/2-inch mill diameter, a 1/8-inch corner radius, and 5 straight flutes in a right-hand cutting and flute direction, this tool delivers consistent, repeatable radii on hardened and difficult-to-machine workpiece materials. The AlTiN coating provides elevated heat resistance and extended tool life under high-speed cutting conditions. A 0 degree helix angle supports stable engagement on straight-flute passes. Both ends are usable, reducing tooling cost per edge on the shop floor.

This end mill is suited for milling steel, stainless steel, super alloys, and titanium - workpiece material codes P, M, and S. It is a strong fit for job shops and production machining environments where edge-breaking and radius profiling are performed on tough alloys. The double-end configuration is particularly useful in high-volume operations where maximizing edge count per tool reduces changeover frequency.

Key Features

• 1/8-inch corner radius (0.1250 inches decimal) for consistent edge profiling
• 5 straight flutes with right-hand cutting and flute direction
• AlTiN coating for high-temperature wear resistance on hard alloys
• Double-end design doubles usable cutting edges per tool
• Solid carbide construction for rigidity in ferrous and super alloy cutting
• Cylindrical 1/2-inch shank fits standard collet and end mill holders

Compatibility

Designed for use on steel, stainless steel, super alloys, and titanium workpieces; compatible with standard 1/2-inch cylindrical shank tool holders and collet chucks on vertical and horizontal machining centers.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Secure the 1/2-inch cylindrical shank in a properly sized collet or end mill holder and verify runout before initiating a cut. Confirm spindle speed and feed rate are appropriate for the workpiece material and coating type before engaging the tool. Coolant-through is not supported on this tool; apply external coolant or cutting fluid as required by the workpiece material.