Specifications
1. M2, M35 are available2. Available for specified requirements.
3. For all materials in sheet
4.. Wall thickness up to 4mm
Spiral Flute HSS Step Drill Bits
M2 HSS, Titanitrid Coating, M35 HSS-E
1. Available for specified requirements.
2. For all materials in sheet, pipes and workpieces with a wall thickness up to 4mm
| Material | HSS W4/W9/M2/M35 |
| Flute type | Spiral Flute |
| Shank | Straight Shank |
| Surface treatment | Tin-Coated, Nutride Oxide, Bright Finished |
| Point Angle | 118 degree point |
| Application | For drilling in sheet, pipes and workpieces
|
| Pakcing: | 1. Single piece packed in clam shell |
| 2. Step drill in sets are available. |
Advantages:
1. No Centering required, the drills do not run off center.
2. A variety of hole diameters can be drilled using only one tool, and the tool can display the dimensions.
3. The dimension of drilled hole is exact.
4. Holes are de-burred by the following level, and cylindrical bores are produced.
5. Even very thin-walled materials can be drilled.
| Item NO. | Specification | Steps | OAL | Shank Size | Material |
| 1.3.4.4-1 | 4-12 | 5 | 65mm | 6mm | HSS W4/W9/M2/M35 |
| 1.3.4.4-2 | 4-12 | 9 | 65mm | 6mm | HSS W4/W9/M2/M35 |
| 1.3.4.4-3 | 4-20 | 9 | 75mm | 8mm | HSS W4/W9/M2/M35 |
| 1.3.4.4-4 | 4-30 | 14 | 100mm | 10mm | HSS W4/W9/M2/M35 |
| 1.3.4.4-5 | 6-38 | 12 | 100mm | 10mm | HSS W4/W9/M2/M35 |
| 1.3.4.4-6 | 6-26.75 | 8 | 75mm | 10mm | HSS W4/W9/M2/M35 |
| 1.3.4.4-7 | 4-39 | 13 | 107mm | 10mm | HSS W4/W9/M2/M35 |
| 1.3.4.4-8 | 6-32 | 8 | 75mm | 10mm | HSS W4/W9/M2/M35 |
| 1.3.4.4-9 | 6-30 | 9 | 80mm | 10mm | HSS W4/W9/M2/M35 |
TONGYU's philosophy is based on three principles: safety, efficiency and precision.
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