12 mm Countersinks | McMaster-Carr

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Stainless Steel

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Countersink Angle

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High-Speed Steel

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DFARS Specialty Metals

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REACH

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Flute Type

Countersink Type

How can we improve?

7 Products

Fabricating and Machining

Countersinks

Cut a cone-shaped opening in a hole to install flat-head screws and rivets flush with the surface

Counterbores

Enlarge the top of a hole to install socket and hex head screws flush with the surface

Counterbore Insert Holders

Counterbore Insert Holders

Pair with inserts to create flat-bottom holes

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)