Counterbores are used to enlarge a preformed hole when a flat bottom is required or to spotface when a machine finish is required. The counterbore is an end cutting tool which may utilize a pilot to align the enlarged hole being machined with the preformed hole. Capscrew counterbores have non-removable pilots.


5778
Counterbores - Straight Shank - For Steel
41

5779
Counterbores - Straight Shank - For Non-Ferrous & Cast Iron
61

5780
Counterbores - Tapered Shank - For Non-Ferrous & Cast Iron
61

5781
Counterbores - Tapered Shank - For Steel
41

9513
Capscrew Counterbores - Straight Shank - For Non-Ferrous & Cast Iron
38

9515
Capscrew Counterbores - Straight Shank - For Steel
38

9522
Reduced Shank Counterbores - Right Hand Helix - For Non-Ferrous
41