Value Collection 723-3218 Square End Mill 7/8 in Cobalt

Product Description

The VALUE COLLECTION 723-3218 is a single-end, square-profile cobalt end mill designed for milling operations in ferrous and high-temp alloys. Built from M42 cobalt high-speed steel, it delivers increased heat and wear resistance compared to standard HSS tooling. The cutter measures 0.875 inches in diameter with a 1.875-inch length of cut and a 4.125-inch overall length. Four right-hand spiral flutes at a 30-degree helix angle promote efficient chip evacuation and a smooth finish. The center-cutting geometry allows plunge entry. This tool is used by machinists and tool-and-die professionals on manual mills and CNC machining centers.

The 723-3218 is suited for peripheral and slot milling in steel, stainless steel, cast iron, and similar materials where cobalt tooling outperforms standard HSS. The 0.75-inch shank diameter fits standard R8, straight-shank, or ER collet toolholders commonly found in vertical mills and machining centers. Its bright, uncoated finish makes it a practical choice for general-purpose milling where a dedicated coating is not required. The regular-length profile keeps overhang low for better rigidity in typical depth-of-cut applications.

Key Features

• M42 cobalt HSS construction for improved red hardness and wear resistance over standard M2 HSS
• 4 right-hand spiral flutes with 30-degree helix angle for efficient chip flow
• Center-cutting design allows direct plunge milling without a pre-drilled hole
• 0.875-inch cutting diameter with 1.875-inch length of cut for standard-depth slotting and profiling
• Bright, uncoated finish compatible with cutting oils and flood coolant
• Single-end tool; right-hand cutting direction for standard spindle rotation

Compatibility

Designed for use in standard 0.75-inch straight-shank or collet-style toolholders on vertical knee mills, bed mills, and CNC machining centers. Fits toolholding systems accepting a 0.75-inch shank diameter.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Power down and lock out the machine spindle before inserting or removing the end mill from the toolholder. Verify shank seating depth and collet or set-screw torque per the toolholder manufacturer's specifications. Inspect the cutting edges for chips or wear before each use; cobalt tooling should not be run on incorrect speeds and feeds as overheating will reduce tool life.