Value Collection 720-3509 Square End Mill 1/2 in 4 Flute Hss

Product Description

The VALUE COLLECTION 720-3509 is a single-end square end mill designed for milling flat-bottomed slots, pockets, and profiles in metal and general-purpose materials. Manufactured from M2 high speed steel with a bright uncoated finish, it measures 0.5 inches in diameter with a 2-inch length of cut and a 4-inch overall length. The four-flute, right-hand spiral configuration at a 30-degree helix angle promotes efficient chip evacuation and a smooth finish on ferrous and non-ferrous workpieces. This tool is suited for conventional milling operations where coolant-through and extended-reach features are not required.

This end mill is used in manual mills, knee mills, CNC machining centers, and bridgeport-style machines in job shop, maintenance, and production environments. The 0.5-inch shank diameter fits standard ER or end mill holders in that bore size. Its long-series length type provides additional reach for deeper-cavity work compared to standard-length tooling. Machinists, toolmakers, and maintenance technicians performing metal removal tasks are the primary users of this style of tool.

Key Features

• M2 high speed steel construction for good wear resistance in general machining applications
• 4-flute design for improved surface finish and feed rate capability
• 30-degree right-hand helix for efficient chip flow in conventional milling
• Bright uncoated finish suitable for use with or without cutting fluid
• Long-series length type provides additional reach over standard-length end mills
• Single-end geometry; not center-cutting, so not suited for direct plunge operations

Compatibility

Designed as a general-purpose square end mill compatible with any milling machine or machining center that accepts a 0.5-inch shank diameter end mill holder or collet chuck.

Installation Notes

Installation is performed by a machinist or toolmaker using an appropriate end mill holder, collet chuck, or Weldon-style holder rated for 0.5-inch shank tooling. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify holder runout with a dial indicator after seating the tool to minimize chatter and premature tool wear. This tool is not center-cutting and should not be used for direct vertical plunge cuts without a pre-drilled starting hole or ramping entry.