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Adjustable Counterbores

Adjustable Counterbores allow you to drill cylidrical flat-bottomed holes while adjusting the depth of cut of the center drill.  Choose from a great selection of Adjustable counterbore drills from Southeast Tool.  If you don't see the size of the Adjustable counterbore you need, give us a call at 800-346-8274.  We may have other options other than what is available online.



Adjustable Counterbores, Carbon Steel, 1/2" Shank, Style No 5

These Carbon Steel Adjustable Counterbores have a 1/2" shank and overall length of 4 1/2" (not including the center drill).  Used for counterboring flat-bottom holes in wood.



Adjustable Counterbores, Carbide Tipped, 7/16-14 Threaded Shank, Style 514CT

These Carbide Tipped Threaded Shank Adjustable Counterbores are ideal for making flat-bottom counterbores in wood, hardwood, and even in plastics.  Overall length is 4 1/2" (not including center drill)


Adjustable Counterbores, Carbon Steel, Style 5A

These Carbon Steel Adjustable Counterbores have a length ranging from 1-1/2" to 2" (not including the center drill).


Adjustable Counterbores, Carbon Steel, 7/16-14 Threaded Shank, Style 514

These Threaded Shank Adjustable Counterbores have an overall length of 4-1/2" (not including the center drill).