Neck Bolt Counterbore


The Neck Bolt Counterbore makes it easy to recess your bolt-on neck hardware from outside the instrument.  By doing this step after the block has been glued in place, you’ll avoid the issue of misaligned holes- which leads to misaligned hardware between the body and the neck.  This simple tool can save you a heap of frustration in your build process and adds a touch of class to your finished instrument.

See more information below under the “product information” tab.

SKU: NBC-1 Category:

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Neck Bolt Counterbore



I’ve been using this Neck Bolt Counterbore since I switched to bolted necks a few years ago. Simple to use and produces a perfectly clean counterbore every time – highly recommended.
I’ve used counterbores for several years to counter sink neck bolts. Some are pretty good, but not great. This one is at least a few steps ahead of the ones I’ve used in the past. The shaft is a few thousandths under a 1/4″, it fits just right in a 1/4″ hole to not wobble and still turn freely. It also leaves the bottom of the hole dead flat. It does exactly what it is supposed to do very well.

Additional information


-Works with handheld drill
-Replaceable head with set screw


– 3/4" head diameter
– .240" shaft diameter
– 2 1/4" + shaft length when head is attached