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Countersinking

Countersinking is a popular and inexpensive way to improve both the aesthetics and longevity of your assembled sheet metal parts. The process itself involves drilling conical holes that allow your hardware to embed and lay flush with the outside surface.

Instant Pricing

Superior selection and tight tolerances

Use our instant quoting app and on-demand catalog to add countersunk holes to 500+ variations of steel and aluminum. This service is available on material thicknesses up to 1” and with a stated accuracy of within +/- 0.015”.

Shop with confidence

Engineers love using OSH Cut’s online quoting engine and DFM tools to ensure manufacturability and know precisely what they’ll get … and when to expect it … before they purchase.

Things to note

Since countersinking is a sub-surface feature, the deburring process may or may not reach all the minute edges or blemishes within the hole. It should also be noted that powder coating can make for tighter-than-expected fittings with hardware.

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