Internal Tool 68-1302-C Corner Rounding End Mill 3/8 in

Product Description

The INTERNAL TOOL 68-1302-C is a double-end, solid carbide corner rounding end mill designed to produce consistent radius edges on a wide range of workpiece materials. It features a 0.0984-inch corner radius, a 3/8-inch mill diameter, and three straight flutes with a right-hand cutting direction. The AlTiN coating provides heat and wear resistance suited to high-temperature cutting environments. With a 2.5-inch overall length and a 0.3750-inch cylindrical shank, this tool is sized for standard toolholders used in CNC milling and manual mill operations. It is installed and operated by machinists and tool-and-die professionals in production and job-shop settings.

This corner rounding end mill is suited for edge-breaking and radius-blending operations on steel, stainless steel, cast iron, non-ferrous metals, super alloys, and titanium. The double-end configuration extends tool life by providing two usable cutting ends. The micrograin carbide substrate supports tight tolerances in both light-finishing and moderate-stock-removal passes. Typical applications include deburring sharp corners, producing uniform fillet radii on machined components, and finishing edges prior to assembly or inspection.

Key Features

• Double-end design provides two cutting ends, maximizing tool value per unit
• AlTiN coating improves heat resistance and tool life in ferrous and high-temperature alloy cutting
• Micrograin solid carbide substrate supports precise, repeatable radius profiles
• 0.0984-inch corner radius with a 0.1150-inch tip diameter for controlled edge geometry
• Three straight flutes with right-hand helix for smooth chip evacuation
• Compatible with primary workpiece materials including steel, stainless steel, cast iron, non-ferrous metals, and super alloys

Compatibility

Designed for use on steel, stainless steel, cast iron, non-ferrous metals, and super alloys and titanium. Fits standard 3/8-inch cylindrical toolholders. Suitable for CNC and conventional vertical milling applications requiring a 0.0984-inch corner radius profile.

Installation Notes

Install and remove end mills only after the spindle has come to a complete stop and the machine is powered down or placed in lockout/tagout. Secure the cylindrical shank in a properly sized collet or end mill holder to the torque specifications of the toolholder manufacturer. Inspect both cutting ends for chipping or wear before use. Coolant-through is not supported on this tool; use external flood or mist coolant as appropriate for the workpiece material.