Value Collection 723-6721 Roughing End Mill 3/8 in Cobalt

Product Description

The VALUE COLLECTION 723-6721 is a single-end roughing end mill designed for aggressive material removal in milling operations. Built from M42 cobalt high-speed steel and finished with a TiN (titanium nitride) coating, this tool delivers heat resistance and extended cutting life under demanding conditions. It measures 3/8 inch in diameter with a 3/4-inch length of cut and a 2-1/2-inch overall length. With 4 flutes and a right-hand cutting and flute direction, it handles roughing passes efficiently. Installed by machinists and tool-and-die professionals, this end mill is a workhorse for shops running moderate to high-volume stock removal.

This roughing end mill is suited for use in vertical machining centers, knee mills, and manual milling machines where fast material removal is the priority. The 3/8-inch shank diameter fits standard ER and side-lock toolholders commonly found in production and job-shop environments. It is not center-cutting, so it requires a pre-drilled or pre-slotted entry point before plunging. Typical applications include slotting, profiling, and roughing passes on steel, stainless, and high-temperature alloys where the M42 cobalt substrate offers an advantage over standard M2 HSS tooling.

Key Features

• M42 cobalt high-speed steel construction for improved heat and wear resistance
• TiN coating extends tool life and reduces friction during cut
• 4-flute, right-hand cut and right-hand helix geometry optimized for roughing
• 3/8-inch diameter with matching 3/8-inch shank for balanced rigidity
• Single-end design with 3/4-inch length of cut
• Not center-cutting — requires pre-existing entry point for plunge operations

Compatibility

Designed as a standard 3/8-inch shank roughing end mill compatible with ER collet chucks, side-lock holders, and weldon-style toolholders accepting a 3/8-inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist following shop safety protocols. Power down and lock out the spindle before inserting or removing the end mill from the toolholder. Ensure the shank is fully seated and the toolholder is torqued to the machine manufacturer's specification using the appropriate wrench. Confirm runout is within acceptable tolerance before beginning a cut to protect both the tool and the workpiece.