Specifications
1,hss step drill2. Available for specified requirements.
3. For all materials in sheet
4.. Nitride Oxide set drill
Fully Ground HSS Step Drill
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 | Straight Shank |
| Shank | Straight Shank |
| Surface treatment | TIN Coated |
| 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. |
HSS step drill bits
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.
HSS Step drill bits
| Item NO. | Specification | Steps | OAL | Shank Size | Material |
| 1.3.4.6-1 | 4-12 | 5 | 65mm | 6mm | HSS W4/W9/M2/M35 |
| 1.3.4.6-2 | 4-12 | 9 | 65mm | 6mm | HSS W4/W9/M2/M35 |
| 1.3.4.6-3 | 4-20 | 9 | 75mm | 8mm | HSS W4/W9/M2/M35 |
| 1.3.4.6-4 | 4-30 | 14 | 100mm | 10mm | HSS W4/W9/M2/M35 |
| 1.3.4.6-5 | 6-38 | 12 | 100mm | 10mm | HSS W4/W9/M2/M35 |
| 1.3.4.6-6 | 6-26.75 | 8 | 75mm | 10mm | HSS W4/W9/M2/M35 |
| 1.3.4.6-7 | 4-39 | 13 | 107mm | 10mm | HSS W4/W9/M2/M35 |
| 1.3.4.6-8 | 6-32 | 8 | 75mm | 10mm | HSS W4/W9/M2/M35 |
| 1.3.4.6-9 | 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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