Harvey Tool 943220-C3 Square End Mill 5/16 in 4 Flute Carbide

Product Description

The HARVEY TOOL 943220-C3 is a solid carbide square end mill designed for high-performance milling in demanding machining environments. With a 5/16 inch cutting diameter and four flutes, it delivers efficient material removal and a smooth surface finish. The AlTiN coating provides thermal resistance and extended tool life in ferrous and exotic alloy applications. A 30-degree helix angle balances chip evacuation with cutting force, and the centercutting geometry allows plunge entry directly into the workpiece. The reduced shank design — 1/4 inch versus the 5/16 inch cutting diameter — provides clearance in tighter setups without sacrificing rigidity at short overhangs.

This end mill is suited for CNC machining centers and manual mills in tool-and-die, aerospace, and general precision machining shops. The single-end configuration with right-hand cut and right-hand flute is standard for conventional and climb milling on vertical machining centers. The 15/32 inch length of cut accommodates shallow-to-moderate pocket depths. At 4 inches overall length, it fits standard tool holders without requiring extended-reach adapters in most setups. Machinists working aluminum, hardened steel, stainless, and titanium alloys will find the AlTiN finish and geometry well matched to those materials.

Key Features

• 5/16 inch cutting diameter with 15/32 inch length of cut for shallow-to-mid-depth pocketing and slotting
• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• AlTiN finish provides high-temperature oxidation resistance and extends tool life in ferrous and exotic alloys
• 30-degree helix angle balances chip evacuation with lateral cutting forces
• Centercutting geometry permits direct plunge entry without a pilot hole
• Reduced 1/4 inch shank allows use in smaller collets and provides clearance in confined workholding setups

Compatibility

Designed for use in CNC machining centers and manual mills accepting a 1/4 inch collet or end mill holder. No specific compatible machine models were provided in the product data.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is in a safe state before mounting or removing the tool. Seat the shank fully in the collet or end mill holder and torque the retention hardware to the toolholder manufacturer's specification. Confirm runout with a dial indicator before cutting, as excessive runout accelerates edge wear on carbide tooling.