NA 121
DIN Standards Committee Tools and Clamping Devices
DIN 20379-2 [CURRENT] references following documents:
| Document number | Edition | Title |
|---|---|---|
| DIN 20377 | 2009-11 | Rock drilling - Flush drills - Drill rod profiles, shanks and tapers More |
| ISO 10207 | 1991-02 | Rock drilling equipment; rope threaded drill steel equipment for percussive drilling, nominal sizes 22 mm to 38 mm More |
| ISO 10208 | 1991-02 | Rock drilling equipment; left-hand rope threads More |
