COUNTERSUNK • E-FREE TRANSLATION.COM • Definition of Countersunk

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verb

Countersunk past part., adj.

Chamfered at the top; said of a hole.

Sunk into a chamfer; as, a countersunk bolt.

Beveled on the lower side, so as to fit a chamfered countersink; as, a countersunk nailhead.

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Etymology of 'Countersunk'

Collaborative International Dictionary of English 0.48

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"Countersunk" Quotes from Famous Books

... of 4x4 uprights, about eight feet apart, resting on 8x8x12 concrete blocks with a half inch iron rod imbedded in the concrete and countersunk in lower end of upright 4x4 to keep the latter in place. Nail ties of 2x4 are used, and to these are nailed common lumber surfaced. The roof consists of 2x4 or 2x6 rafters, usually three feet apart, with 1x6 boards spaced ...

— Trees, Fruits and Flowers of Minnesota, 1916 • Various

... Commencing with a countersunk head as the strongest form of head, the greater the fillet permissible under the head of a rivet, or bolt, the greater the strength and the decrease in liability to fracture, as a fillet is the ...

— Scientific American Supplement, No. 810, July 11, 1891 • Various