Kennametal 6676383 Corner Radius End Mill 3/8 in 4 Flute Altin

Product Description

The KENNAMETAL 6676383 is a solid carbide corner radius end mill designed for high-performance material removal in demanding machining applications. Built to the H1TE series specification, it features a 3/8 inch diameter, a 0.03 inch corner radius, and four right-hand spiral flutes with a 36-degree helix angle. The AlTiN PVD coating provides thermal and oxidation resistance at elevated cutting temperatures. With an overall length of 2.5 inches and a 7/8 inch length of cut, this single-end, centercutting tool handles both roughing and finishing operations. It is intended for use by machinists and CNC operators working in production and job-shop environments.

This end mill is engineered for cutting steel, stainless steel, cast iron, superalloys, titanium, and hard materials. The submicron carbide grade and AlTiN coating make it well suited for high-speed and high-temperature cutting conditions common in aerospace, die and mold, and general precision machining. The 3/8 inch straight-cylindrical shank with standard length fits directly into compatible toolholders including HC-HSK Form A style holders. Material removal type is listed as roughing and finishing, making it a versatile choice for multi-pass work on difficult workpiece materials.

Key Features

• Solid carbide submicron grade construction for rigidity and wear resistance in hard and abrasive materials
• AlTiN PVD coating provides oxidation and heat resistance at high cutting speeds
• 0.03 inch corner radius reduces stress concentration at cutting edges and improves surface finish at part corners
• 36-degree right-hand helix with normal pitch promotes smooth chip evacuation during slotting and peripheral milling
• Centercutting design allows plunge entry into workpiece material
• Single-end configuration with 3/8 inch straight-cylindrical shank for direct clamping in standard collet chucks and milling toolholders

Compatibility

Compatible with HC-HSK Form A toolholders. Designed for use on steel, stainless steel, cast iron, superalloys, titanium, and hard materials per material codes P, M, K, S, and H. Part of the KENNAMETAL H1TE series.

Installation Notes

Installation and tool changes must be performed by a qualified machinist with the machine fully powered down and the spindle locked. Ensure the shank is fully seated and clamped to the recommended gauge depth in the toolholder before operation. Inspect the collet or chuck for runout before committing to a finishing pass. Follow the machine tool manufacturer torque specifications for drawbar and toolholder retention hardware.