Value Collection 723-6489 Corner Rounding End Mill

Product Description

The VALUE COLLECTION 723-6489 is a single-end corner rounding end mill designed to produce smooth, radiused edges on machined workpieces. Built from M42 cobalt high-speed steel, this tool handles demanding applications where standard HSS cutters wear prematurely. It features a 5/16-inch radius, a 1-1/8-inch mill diameter, and a 1/2-inch shank diameter with a bright/uncoated finish. Four right-hand flutes and a right-hand cutting direction make this a standard configuration for conventional milling setups. Machinists and toolroom operators use it on CNC mills and manual knee mills to break edges and apply consistent corner radii on ferrous and non-ferrous stock.

This end mill is suited for use in job shops, tool and die operations, and general machining environments where edge-rounding is a recurring finishing step. The cobalt M42 construction provides increased heat and abrasion resistance compared to standard M2 HSS, making it a practical choice for harder steels and stainless alloys. Typical applications include rounding external corners on milled parts, deburring, and producing uniform radii for assembly fit-up or aesthetic finishing requirements.

Key Features

• 5/16-inch corner radius for consistent edge profiling
• M42 cobalt construction for improved heat and wear resistance over standard HSS
• 4 right-hand flutes with right-hand cutting direction
• 1/2-inch shank diameter fits standard collets and end mill holders
• Bright/uncoated finish suitable for use with or without cutting fluid
• Single-end design for straightforward tool holding and setup

Compatibility

Designed as an OEM-style replacement or standard toolroom end mill compatible with any milling machine spindle accepting a 1/2-inch shank via collet, end mill holder, or Weldon-style tool holder.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the machine spindle is fully powered down and locked out before loading or removing the tool. Seat the shank fully into the holder and torque set screws according to the tool holder manufacturer specifications. Verify runout with a dial indicator before beginning the cut, as excessive runout reduces tool life and edge quality.