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Bright uncoated cobalt double end mill with two flutes

Cleveland Golf

Cleveland Golf Cobalt Double End Mill 5/16 2FL

SKU CH-J670-4ZEBC

Cobalt double-end square mill with two flutes, 5/16 inch cut diameter and 30-degree helix for finishing cuts

  • TypeHole, Drill, Bore & Wire Gauges
  • Cobalt construction resists wear during finishing cuts
  • Double-ended design provides two cutting edges per tool
  • 2-flute geometry clears chips efficiently in finishing passes
  • 30-degree helix angle promotes smooth cutting action
  • Bright uncoated finish suits general-purpose milling applications

Cleveland Cobalt 5/16" Double End Mill

This solid-cobalt square end mill is built for general-purpose finishing on ferrous and non-ferrous materials. Its double-ended design gives two cutting ends per tool, reducing change-over time in a busy shop. The 30-degree helix and right-hand cut suit conventional milling machines and CNC setups alike. Machinists who need a bright, uncoated flute surface for chip evacuation will find it practical.

3/8" Shank with 9/16" Length of Cut

The 3/8-inch shank fits standard ER collets and Weldon holders without adapters, so the tool seats securely in most toolholders. A 9/16-inch length of cut handles shallow pockets and profiling passes in a single engagement. Bright finish means no coating to wear off, yet the cobalt substrate resists heat during extended cuts. Builders needing longer reach or coated flutes for high-speed roughing should look elsewhere.

General-Purpose Finishing Focus

Supplied as a single HDC-2 list-number tool with no additional accessories or software. The uncoated, sharp-corner geometry is intended for finishing passes where dimensional accuracy and surface finish matter. Operators who require roughing chipbreakers, corner-radius protection or a coated variant for abrasive alloys will need a different tool.

Highlights

  • Cobalt construction resists wear during finishing cuts
  • Double-ended design provides two cutting edges per tool
  • 2-flute geometry clears chips efficiently in finishing passes
  • 30-degree helix angle promotes smooth cutting action
  • Bright uncoated finish suits general-purpose milling applications

Specifications

BrandCleveland
TypeHole, Drill, Bore & Wire Gauges

Questions about this item

What does the 3/8 inch shank diameter limit in a milling setup?

The 3/8 inch shank requires a matching collet or holder and determines the maximum tool-holder capacity for this double-end mill.

What physical clearance does the 3-1/2 inch overall length require?

The 3-1/2 inch overall length needs sufficient spindle travel and workpiece clearance to accommodate the full tool without interference.

How is the 30 degree helix angle managed during installation?

Install the tool with the right-hand cutting direction aligned to the spindle rotation so the 30 degree helix pulls chips away from the cut.

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