DIN1869 135 split angle fully ground HSS double ends twist drill bit
1. Material: 4241, 4341, 9341, 6542, M2, M35, and M42 +Co 5% etc. double ended.
2. Manufacturing Art: Fully ground,milled,forged
3. Application: For drilling in steel, cast steel, malleable iron, sintered metal, non-ferrous metal and plastic,or wood.
4. Packing: Paper box, or Plastic box,punch bag,set case etc
5. Dia Size: 3.0mm-6.5mm
6.Surface finish:bright white,black,tin-coated, black&yellow,bronze coated,rainbow,Zirconium coated,coffee etc (pic:bright)
7.135 degree or 118 degree;
8.Double End twist Drills are fluted and split pointed on both ends and have a solid center shank for chucking. They will drill twice as many holds as a Single End Drill for only a fraction more in cost. When one end gets dull or breaks, it can be quickly reversed in drill chuck to reduce change-over time, overall costs, and inventory.
9.suitable for metal drilling metal 5mm thickness with less hardness HRC35.
Dia.mm | Working Length mm | Overall Length mm |
| 2 | 8 | 38 |
| 2.5 | 10 | 43 |
| 3 | 11 | 46 |
| 3.2 | 11 | 49 |
| 3.5 | 14 | 52 |
| 4 | 14 | 55 |
| 4.5 | 17 | 58 |
| 5 | 17 | 62 |
| 5.5 | 19 | 66 |
| 6 | 19 | 66 |
| 6.5 | 22 | 70 |
| Dia. | Working Length | Overall Length |
| 1/16 | 3/8 | 1 1/2 |
| 5/64 | 3/8 | 1 1/2 |
| 3/32 | 3/8 | 1 11/16 |
| 7/64 | 1/2 | 1 13/16 |
| 1/8 | 1/2 | 1 13/16 |
| 9/64 | 5/8 | 2 1/16 |
| 5/32 | 5/8 | 2 3/16 |
| 3/16 | 5/8 | 2 5/16 |
| 7/32 | 3/4 | 2 5/8 |
| 1/4 | 3/4 | 2 7/8 |