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Photographs are representational and may not be size accurate.

Winzer

5/16-18 x 1 Inch Coarse Black Oxide Medium Carbon Steel 12 Point Counterbore Bolt

Item 268.516.1

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Description

Counterbore screws are threaded fasteners that are designed for use in counterbored holes. A counterbored hole is essentially a pilot hole consisting of a long and narrow threaded channel at the bottom and a shallower but wider channel at the top.

Photographs are representational and may not be size accurate.

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