SU Series (inch): 3x diameter depth, straight shank, internal cooling
| Drill Type: | 3D, Straight Shank | |
| Cooling Method: | Internal | |
| Grade: | KDG303 | |
| Grade Description: | Nano structured nc-TiAlN coating on ultrafine high strength carbide substrate | |
| Application: | General drilling on a wide range of workpiece materials, particularly carbon steel, alloy steel, pre-hardened steel (HRC40), cast iron, nodular cast iron, etc. |
| Stocking Item | Dimension (inch) | |||||
| Part Number | Drill Dia.(d1) | Shank Dia.(d2) | Overall Length(L1) | Flute Length(L2) | Recom. Drilling Depth (L3) | Shank Length(L4) |
| SU-A1-01250 | 1/8 | 0.1875 | 2.48 | 0.91 | 0.685 | 1.44 |
| SU-A1-01875 | 3/16 | 0.1875 | 2.68 | 1.14 | 0.890 | 1.44 |
| SU-A1-02500 | 1/4 | 0.2500 | 2.87 | 1.34 | 1.020 | 1.44 |
| SU-A1-03125 | 5/16 | 0.3125 | 3.11 | 1.5 | 1.114 | 1.52 |
| SU-A1-03750 | 3/8 | 0.3750 | 3.50 | 1.81 | 1.366 | 1.59 |
| SU-A1-05000 | 1/2 | 0.5000 | 4.02 | 2.13 | 1.559 | 1.79 |
| SU-A1-05625 | 9/16 | 0.5625 | 0.42 | 2.32 | 1.831 | 1.79 |
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