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End Mill Size Chart
Standard end mill dimensions, specifications, and cutting parameters for precision machining
Metric End Mills (mm)
| Diameter (mm) | Shank Dia (mm) | Flutes | Overall Length (mm) | Cutting Length (mm) | Material | Coating |
|---|---|---|---|---|---|---|
| 0.5 | 3 | 2 | 38 | 1.5 | Carbide | Uncoated |
| 1 | 3 | 2 | 38 | 3 | Carbide | TiAlN |
| 1.5 | 3 | 2 | 38 | 4 | Carbide | TiAlN |
| 2 | 3 | 2 | 38 | 6 | Carbide | TiAlN |
| 2.5 | 3 | 2 | 38 | 7 | Carbide | TiAlN |
| 3 | 3 | 2 | 38 | 8 | Carbide | TiAlN |
| 4 | 4 | 2 | 50 | 11 | Carbide | TiAlN |
| 5 | 5 | 2 | 50 | 13 | Carbide | TiAlN |
| 6 | 6 | 2 | 57 | 16 | Carbide | TiAlN |
| 8 | 8 | 2 | 63 | 19 | Carbide | TiAlN |
| 10 | 10 | 2 | 72 | 22 | Carbide | TiAlN |
| 12 | 12 | 2 | 83 | 26 | Carbide | TiAlN |
| 16 | 16 | 2 | 92 | 32 | Carbide | TiAlN |
| 20 | 20 | 2 | 104 | 38 | Carbide | TiAlN |
| 25 | 25 | 2 | 115 | 45 | Carbide | TiAlN |
Imperial End Mills (inches)
| Diameter | Decimal (in) | Shank Dia | Flutes | Overall Length (in) | Cutting Length (in) | Material |
|---|---|---|---|---|---|---|
| 1/32" | 0.0313 | 1/8" | 2 | 1.5 | 0.06 | Carbide |
| 1/16" | 0.0625 | 1/8" | 2 | 1.5 | 0.125 | Carbide |
| 3/32" | 0.0938 | 1/8" | 2 | 1.5 | 0.19 | Carbide |
| 1/8" | 0.1250 | 1/8" | 2 | 1.5 | 0.25 | Carbide |
| 5/32" | 0.1563 | 3/16" | 2 | 2 | 0.31 | Carbide |
| 3/16" | 0.1875 | 3/16" | 2 | 2 | 0.375 | Carbide |
| 1/4" | 0.2500 | 1/4" | 2 | 2.5 | 0.5 | Carbide |
| 5/16" | 0.3125 | 5/16" | 2 | 2.5 | 0.625 | Carbide |
| 3/8" | 0.3750 | 3/8" | 2 | 2.5 | 0.75 | Carbide |
| 1/2" | 0.5000 | 1/2" | 2 | 3 | 1 | Carbide |
| 5/8" | 0.6250 | 5/8" | 2 | 3.5 | 1.25 | Carbide |
| 3/4" | 0.7500 | 3/4" | 2 | 4 | 1.5 | Carbide |
| 1" | 1.0000 | 1" | 2 | 4.5 | 2 | Carbide |