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Cleveland C41678 2-flute HSS square end mill, uncoated finish

Cleveland

Cleveland C41678 2-Flute HSS Keyway Tolerance Square Single End Mill

SKU CH-T9XH-2BWG0

A 2-flute high-speed steel end mill with keyway tolerance for precision milling operations

  • Product typeMilling
  • High-speed steel construction resists wear during milling
  • Two-flute design clears chips efficiently from the cut
  • Keyway tolerance ensures accurate slot dimensions
  • Center-cutting geometry allows plunging into the workpiece
  • Uncoated finish suits general-purpose machining applications

Cleveland C41678 Keyway End Mill

The Cleveland C41678 is a two-flute high-speed steel keyway end mill designed for precision milling of standard keyway slots. Its center-cutting geometry allows direct plunge cuts into the workpiece, making it suitable for machinists and maintenance technicians producing keyways in shafts or hubs.

Installation and Common Issues

The tool installs directly into a standard end mill holder or collet chuck sized for the shank, requiring secure clamping to prevent pull-out during cutting. Common issues include premature wear when run without adequate coolant or lubrication, and chatter or poor finish if the tool holder lacks rigidity or the workpiece is not firmly fixtured.

Pre-Order Compatibility Checks

Verify that your milling machine spindle accepts the tool shank diameter and that the holder or collet provides sufficient grip length for the overall tool length. Confirm the machine can deliver the appropriate speed range for high-speed steel in your workpiece material and that the 9/16 inch length of cut meets the required slot depth.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $19.99
Cheaper than about 64% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND
Product typeMilling

Questions about this item

How can I confirm the Cleveland C41678 end mill is cutting correctly after setup?

Check for clean, chatter-free slots in the workpiece and verify the finished keyway matches the required tolerance using a gauge or micrometer.

What comes with the Cleveland C41678 end mill and what must I purchase separately?

The package contains the single 2-flute HSS keyway end mill; tool holders, collets, coolant and work-holding fixtures are sold separately.

Which version of the Cleveland C41678 should I choose for a 5/16 inch keyway?

Select the C41678 model with a 5/16 in milling diameter, centre-cutting geometry and uncoated high-speed steel for standard keyway slotting.

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