Value Collection 320-3718 Ball End Mill 5/16 in 4 Flute Hss

Product Description

The VALUE COLLECTION 320-3718 is a single-end ball end mill designed for contour milling, slotting, and profiling operations on metal and other machinable materials. Built from high speed steel (HSS) with a bright, uncoated finish, this tool offers a 5/16 inch cutting diameter and 1-1/2 inch length of cut, making it well suited for deep-reach roughing and finishing passes. With four right-hand spiral flutes, it delivers smooth chip evacuation and consistent surface finishes. The 3/8 inch shank diameter and 3-1/4 inch overall length fit standard milling machine and machining center collet and end mill holders. Machinists and tooling technicians are the primary users of this style of cutter.

This ball end mill is appropriate for use in manual knee mills, CNC vertical machining centers, and light-duty horizontal setups. The long-series length type gives the reach needed for mold work, cavity milling, and contoured part features where a standard-length tool cannot access the geometry. Right-hand cutting direction is compatible with conventional and climb milling strategies. The bright uncoated finish is a general-purpose choice suited to a wide range of ferrous and non-ferrous workpiece materials where specialized coatings are not required.

Key Features

• 5/16 inch ball nose diameter for contour and profile milling
• 4 right-hand spiral flutes for efficient chip evacuation and smooth finish
• High speed steel construction provides toughness and regrindability
• Long-series overall length of 3-1/4 inches for extended-reach applications
• Bright uncoated finish suits general-purpose ferrous and non-ferrous cutting
• Single-end design with 3/8 inch shank for standard collet and holder compatibility

Compatibility

Designed as a general-purpose replacement or stock ball end mill compatible with standard 3/8 inch end mill holders, collet chucks, and shrink-fit holders used in manual and CNC milling machines.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Ensure the machine spindle is fully stopped and the machine is powered down before changing tooling. Secure the shank firmly in a properly sized collet or end mill holder, torquing the drawbar or retention knob to the machine manufacturer's specification. Inspect the cutting edges for chips or damage before each use, and verify runout with a dial indicator when tight tolerances are required.