Cleveland C38926 Keyway End Mill 9/16 Inch 2 Flute Hss

Product Description

The CLEVELAND C38926 is a 2-flute high speed steel keyway end mill designed for precision slot milling and keyway cutting in metal working applications. With a 9/16-inch cutting diameter and a 1-1/4-inch length of cut, this tool removes material efficiently while maintaining tight tolerances. The straight shank with Weldon flat measures 1/2 inch in diameter, providing secure chuck engagement and minimizing runout. A 30-degree helix angle promotes smooth chip evacuation, and the centercutting design allows plunge entry directly into the workpiece. This end mill is classified for finishing-grade material removal and ships individually.

This end mill is suited for use in manual mills, CNC machining centers, and knee mills where keyway slots, pockets, and contour profiles are required. The HG-2K series designation places this tool in Cleveland's lineup for general-purpose ferrous and non-ferrous machining. Machinists and tool-and-die professionals working in job shops, maintenance facilities, and production environments will find this tool appropriate for both light profiling and slotting operations. The uncoated HSS construction is compatible with cutting fluids and standard machining practices on steel, aluminum, and similar materials.

Key Features

• 9/16-inch cutting diameter with a mill diameter tolerance of +0.0000 / -0.0015 inches for precise fit
• 1-1/4-inch length of cut suitable for standard keyway depths
• 2-flute geometry optimized for finishing and slot milling
• 30-degree helix angle for smooth chip flow and reduced heat buildup
• Centercutting design allows direct plunge cuts without pre-drilling
• 1/2-inch straight shank with Weldon flat for positive drive in side-lock holders
• Uncoated high speed steel construction compatible with a wide range of cutting fluids

Compatibility

Designed as an OEM-style replacement or direct procurement option for machining applications requiring a 2-flute HSS keyway end mill with a 1/2-inch straight Weldon flat shank and 9/16-inch cutting diameter.

Installation Notes

Installation and operation should be performed by a qualified machinist familiar with toolholder selection and spindle speed calculations. Secure the Weldon flat shank in a compatible side-lock or Weldon-style end mill holder and verify runout before beginning the cut. Always power down the spindle and confirm the machine is at a complete stop before changing tooling. Follow the machine manufacturer and applicable shop safety guidelines for speed, feed, and depth-of-cut recommendations based on workpiece material.