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Countersink vs. Counterbore
Jan. 20, 2026
Countersink vs. Counterbore

In mechanical design and PCB assembly, even the smallest details determine the success of a product. Among these critical details are the methods used to recess fastener heads — specifically, countersinking and counterboring. While they might seem like simple machined features, choosing the wrong one can lead to assembly issues, structural weakness, or a compromised final appearance. Let’s demystify these two essential techniques.

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