Cleveland
Cleveland C39621 3-Flute HSS Center Cutting Square Double End Mill
A 0.25 in diameter HSS square end mill with TiCN coating and a Weldon flat shank for secure tool holding
- TypeCutting Tools
- 3-flute design improves chip clearance during milling
- HSS construction resists wear in general-purpose cutting
- TiCN coating reduces friction and extends tool life
- Center-cutting geometry allows plunge and profile cuts
- Double-ended style provides two cutting ends per tool
Cleveland C39621 Double End Mill
The Cleveland C39621 is a 3-flute high speed steel center cutting square double end mill designed for milling operations. It features a TiCN coating and a Weldon flat shank for secure tool holding. This tool is intended for general purpose machining tasks in a workshop environment.
Machinists needing a coated HSS end mill
This tool suits machinists who need a high speed steel end mill with a TiCN coating for improved wear resistance. It is not for buyers who require carbide substrate for higher cutting speeds. It is also not for users needing a specific neck diameter for deep pocket applications.
0.25 inch milling diameter
The mill has a 0.25 inch milling diameter and a 0.625 inch length of cut. The overall length is 3 3/8 inches with a 3/8 inch shank diameter. This specific cutting geometry determines the tool's suitability for your milling operation.
Highlights
- 3-flute design improves chip clearance during milling
- HSS construction resists wear in general-purpose cutting
- TiCN coating reduces friction and extends tool life
- Center-cutting geometry allows plunge and profile cuts
- Double-ended style provides two cutting ends per tool
Specifications
| Brand | CLEVELAND |
|---|---|
| Type | Cutting Tools |
Questions about this item
How do I install the Cleveland C39621 end mill in a Weldon flat holder and what step is often missed?
Insert the 3/8 in shank fully into the holder, align the flat with the set screw, and tighten the screw securely; the step often missed is confirming the flat seats squarely before locking it down.
What maintenance or replacement will the Cleveland C39621 need after extended use?
The TiCN coating and three high-speed steel flutes wear gradually; plan to resharpen or replace the cutter when edge wear reduces cut quality or when the .25 in diameter is no longer within tolerance.
What limit appears first when running the Cleveland C39621 continuously in steel?
Heat buildup at the .625 in length of cut typically becomes the limiting factor, causing accelerated flank wear on the HSS flutes before deflection or vibration issues arise.
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