技术服务
上海吉都国际贸易有限公司
热线：021-3765 2176
info@guido-tools.com
上海市松江区茸梅路345号3栋
Thread for mechanical and optical instruments,
established in 1873 by the Ducommunschen Werkstätten (Heilmann, Ducommun &
Steinle) in Mülhausen i. E.
The flank angle is 60°
| Major Diameter | Pitch | Tapping |
| mm | mm | Drill Size |
| mm | ||
| 3.00 | 0.50 | 2.33 |
| 4.00 | 0.75 | 3.00 |
| 5.00 | 0.75 | 4.00 |
| 6.00 | 1.00 | 4.67 |
| 7.00 | 1.25 | 5.33 |
| 8.00 | 1.25 | 6.33 |
| 9.00 | 1.50 | 7.00 |
| 10.00 | 1.50 | 8.00 |
| 12.00 | 1.75 | 9.67 |
| 15.00 | 2.00 | 12.33 |
| 18.00 | 2.50 | 14.67 |
| 20.00 | 2.50 | 16.67 |
| 23.00 | 3.00 | 19.00 |
| 25.00 | 3.00 | 21.00 |
| 28.00 | 3.00 | 24.00 |
| 30.00 | 3.50 | 25.33 |
| 32.00 | 3.50 | 27.33 |
| 35.00 | 4.00 | 29.67 |
| 38.00 | 4.00 | 31.67 |
| 40.00 | 4.00 | 34.68 |
| 45.00 | 4.50 | 39.00 |
| 48.00 | 5.00 | 40.33 |
| 50.00 | 5.00 | 43.33 |
| 55.00 | 5.00 | 48.33 |
| 60.00 | 6.00 | 52.00 |
| 65.00 | 6.00 | 57.00 |
| 70.00 | 7.00 | 60.67 |
| 75.00 | 7.00 | 65.67 |
| 80.00 | 7.00 | 70.67 |
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