Tooling Overview


eMachineShop has a variety of counterbore tooling to complement our full range of CNC machining equipment.

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What is Counterboring?

Counterboring creates a cylindrical recess around a hole, widening it to a limited depth. Counterboring is commonly used to allow socket head cap screws sit to below a part’s surface. Surfaces that are rough or curved can also be counterbored to allow a fastener head to flush with the surface.


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