This Drill tool D1916 (Imperial) is used to prepare the correct hole's diameter, we recommend to use after drilling the correct countersink tool:
| CSK1640 |
This includes the locking versions as well as the inserts in different materials.
After this, we advise you to use the correct tapping tool (Through Hole): TTI1916
or tapping tool (Blind Hole): TBI1916
