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                    | for DIN cylinder head screws | M5 | |
| Shank type | Weldon shank | |
| Through-coolant | yes | |
| Number of cutting edges Z | 1 | |
| Number of indexable inserts | 1 | |
| Counterbore ⌀ D1 H13 | 10 mm | |
| Minimum ⌀ dmin | 5.3 mm | |
| maximum counterbore depth l | 10 mm | |
| Overall length L | 80 mm | |
| Shank ⌀ Ds h6 | 16 mm | |
| suitable indexable insert | WOEX | |
| Indexable insert No. 216780 − 216910; No. 216950 | 10-010 / 110 | |
| Set of insert screws | 239652 6IP1 (1.0 Nm) | |
| Type of product | Counterbores, countersinks | 
| Article number | 216660 M5N | |
| EAN / GTIN | 4047109191303 | |
| Manufacturer number | F10 10021 | |
| Manufacturer/responsible person | Ceratizit Besigheim GmbH, Zeppelinstraße 3, 74354 BESIGHEIM, Germany, www.kometgroup.com |