
| eep Double Tube Counterborer ithout a Through Hole, External Start Thread and a Brazed Tip | min max aº L D Ew1 | d | ||||||
| NOM 0 refers | to non-coated dr | ill head, NOM | 2 refers to coate | d drill head. | ||||
| Designation | Dmin | Dmax | a° | Ew1 | L | d | Ts(1) | Tsi(2) |
| DDT-E1 18.41-20.00 NOM 0 | 18.41 | 20.00 | 20/45 | 1.0 | 57.00 | 16.00 | TDO-I0 | TDI-N0 |
| DDT-E1 18.41-20.00 NOM 2 | 18.41 | 20.00 | 20/45 | 1.0 | 57.00 | 16.00 | TDO-I0 | TDI-N0 |
| DDT-E1 20.01-21.80 NOM 0 | 20.01 | 21.80 | 20/45 | 2.0 | 65.00 | 18.00 | TDO-I1 | TDI-N1 |
| DDT-E1 20.01-21.80 NOM 2 | 20.01 | 21.80 | 20/45 | 2.0 | 65.00 | 18.00 | TDO-I1 | TDI-N1 |
| DDT-E1 21.81-24.10 NOM 0 | 21.81 | 24.10 | 20/45 | 2.0 | 65.00 | 19.50 | TDO-I2 | TDI-N2 |
| DDT-E1 21.81-24.10 NOM 2 | 21.81 | 24.10 | 20/45 | 2.0 | 65.00 | 19.50 | TDO-I2 | TDI-N2 |
| DDT-E1 24.11-26.40 NOM 0 | 24.11 | 26.40 | 20/45 | 2.0 | 65.00 | 21.00 | TDO-I3 | TDI-N3 |
| DDT-E1 24.11-26.40 NOM 2 | 24.11 | 26.40 | 20/45 | 2.0 | 65.00 | 21.00 | TDO-I3 | TDI-N3 |
| DDT-E1 26.41-28.70 NOM 0 | 26.41 | 28.70 | 20/45 | 2.0 | 65.00 | 23.50 | TDO-I4 | TDI-N4 |
| DDT-E1 26.41-28.70 NOM 2 | 26.41 | 28.70 | 20/45 | 2.0 | 65.00 | 23.50 | TDO-I4 | TDI-N4 |
| DDT-E1 28.71-31.00 NOM 0 | 28.71 | 31.00 | 20/45 | 2.0 | 70.00 | 25.50 | TDO-I5 | TDI-N5 |
| DDT-E1 28.71-31.00 NOM 2 | 28.71 | 31.00 | 20/45 | 2.0 | 70.00 | 25.50 | TDO-I5 | TDI-N5 |
| DDT-E1 31.01-33.30 NOM 0 | 31.01 | 33.30 | 20/45 | 3.0 | 70.00 | 28.00 | TDO-I6 | TDI-N6 |
| DDT-E1 31.01-33.30 NOM 2 | 31.01 | 33.30 | 20/45 | 3.0 | 70.00 | 28.00 | TDO-I6 | TDI-N6 |
| DDT-E1 33.31-36.20 NOM 0 | 33.31 | 36.20 | 20/45 | 3.0 | 70.00 | 30.00 | TDO-I7 | TDI-N7 |
| DDT-E1 33.31-36.20 NOM 2 | 33.31 | 36.20 | 20/45 | 3.0 | 70.00 | 30.00 | TDO-I7 | TDI-N7 |
| DDT-E1 36.21-39.60 NOM 0 | 36.21 | 39.60 | 20/45 | 3.0 | 82.00 | 33.00 | TDO-I8 | TDI-N8 |
| DDT-E1 36.21-39.60 NOM 2 | 36.21 | 39.60 | 20/45 | 3.0 | 82.00 | 33.00 | TDO-I8 | TDI-N8 |
| DDT-E1 39.61-43.00 NOM 0 | 39.61 | 43.00 | 20/45 | 3.0 | 82.00 | 36.00 | TDO-I9 | TDI-N9 |
| DDT-E1 39.61-43.00 NOM 2 | 39.61 | 43.00 | 20/45 | 3.0 | 82.00 | 36.00 | TDO-I9 | TDI-N9 |
| DDT-E1 43.01-47.00 NOM 0 | 43.01 | 47.00 | 20/45 | 3.0 | 82.00 | 39.00 | TDO-I10 | TDI-N10 |
| DDT-E1 43.01-47.00 NOM 2 | 43.01 | 47.00 | 20/45 | 3.0 | 82.00 | 39.00 | TDO-I10 | TDI-N10 |
| DDT-E1 47.01-51.70 NOM 0 | 47.01 | 51.70 | 20/45 | 3.0 | 82.00 | 43.00 | TDO-I11 | TDI-N11 |
| DDT-E1 47.01-51.70 NOM 2 | 47.01 | 51.70 | 20/45 | 3.0 | 82.00 | 43.00 | TDO-I11 | TDI-N11 |
| DDT-E1 51.71-56.20 NOM 0 | 51.71 | 56.20 | 20/45 | 3.0 | 93.00 | 47.00 | TDO-I12 | TDI-N12 |
| DDT-E1 51.71-56.20 NOM 2 | 51.71 | 56.20 | 20/45 | 3.0 | 93.00 | 47.00 | TDO-I12 | TDI-N12 |
| DDT-E1 56.21-65.00 NOM 0 | 56.21 | 65.00 | 20/45 | 3.0 | 93.00 | 51.00 | TDO-I13 | TDI-N13 |
| DDT-E1 56.21-65.00 NOM 2 | 56.21 | 65.00 | 20/45 | 3.0 | 93.00 | 51.00 | TDO-I13 | TDI-N13 |
(1) Outer tube designation (2) Inner tube designation For holders, see pages: TDO-I (D18.41-65.00) (629)