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Carbide flat bottom drill bit
GCT’s carbide flat-bottom drill bits are primarily used for machining flat, curved, beveled, or other special hole machining applications.
Recommended for machining materials such as steel, cast iron, and stainless steel, with a working hardness between 35HRC and 50HRC. Excellent versatility.
All sizes are 0.01mm apart and available in a full range of specifications.
Material: Carbide
Type: Aluminum or steel machining
Size: 0.5mm-20mm
Efficiency: Flat-bottom drill bit paired with a thread end mill allows for deeper threads.
Cutting resistance is lower than ordinary drill bits, eliminating the need for pre-drilling positioning for more precise machining.
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 | Diameter | Cutting Length | Shank Diameter | Total Length |
| D1.00~D1.50 | 6 | 3 | 50 | |
| D1.60~D1.90 | 10 | 3 | 50 | |
| D2.00~D2.90 | 14 | 4 | 50 | |
| D3.00~D4.00 | 17 | 4 | 50 | |
| D4.10~D5.00 | 23 | 6 | 65 | |
| D5.10~D6.00 | 27 | 6 | 65 | |
| D6.10~D7.00 | 32 | 8 | 75 | |
| D7.10~D8.00 | 36 | 8 | 75 | |
| D8.10~D9.00 | 41 | 10 | 85 | |
| D9.10~D10.0 | 45 | 10 | 85 | |
| D10.1～D11.0 | 50 | 12 | 95 | |
| D11.1～D12.0 | 54 | 12 | 95 | |
| D12.1～D12.5 | 57 | 14 | 100 | |
| D12.6~D13.0 | 59 | 14 | 100 | |
| D13.1~D13.5 | 61 | 14 | 105 | |
| D13.6~D14.0 | 63 | 14 | 105 | |
| D14.5~D14.9 | 65 | 16 | 110 | |
| D15.0~D15.4 | 68 | 16 | 110 | |
| D15.5~D16.0 | 70 | 16 | 120 |
