Crossword clues for countersink
The Collaborative International Dictionary
Countersink \Coun"ter*sink`\ (koun"t[~e]r*s[i^][ng]k`; 277), v. t. [imp. & p. p. Countersunk (-s[u^][ng]k`); p. pr. & vb. n. Countersinking.]
To chamfer or form a depression around the top of (a hole in wood, metal, etc.) for the reception of the head of a screw or bolt below the surface, either wholly or in part; as, to countersink a hole for a screw.
To cause to sink even with or below the surface; as, to countersink a screw or bolt into woodwork.
Countersink \Coun"ter*sink`\, n.
-
An enlargement of the upper part of a hole, forming a cavity or depression for receiving the head of a screw or bolt.
Note: In the United States a flaring cavity formed by chamfering the edges of a round hole is called a countersink, while a cylindrical flat-bottomed enlargement of the mouth of the hole is usually called a conterbore.
A drill or cutting tool for countersinking holes.
Wiktionary
n. a cylindrical recess, typically machined around a hole to admit a screw so that it sits flush with a surface. vb. 1 (context transitive English) To create such a conical recess. 2 (context transitive English) To cause to sink even with or below the surface.
WordNet
n. a hole (usually in wood) with the top part enlarged so that a screw or bolt will fit into it and lie below the surface
a bit for enlarging the upper part of a hole [syn: counterbore, countersink bit]
v. insert (a nail or screw below the surface, as into a countersink) [syn: set]
[also: countersunk, countersank]
Wikipedia
A countersink (symbol: ⌵) is a conical hole cut into a manufactured object, or the cutter used to cut such a hole. A common use is to allow the head of a countersunk bolt or screw, when placed in the hole, to sit flush with or below the surface of the surrounding material (by comparison, a counterbore makes a flat-bottomed hole that might be used with a socket-head capscrew). A countersink may also be used to remove the burr left from a drilling or tapping operation thereby improving the finish of the product and removing any hazardous sharp edges.
The basic geometry of a countersink (cutter) inherently can be applied to the plunging applications described above (axial feed only) and also to other milling applications (sideways traversal). Therefore, countersinks overlap in form, function, and sometimes name with chamfering endmills ( endmills with angled tips). Regardless of the name given to the cutter, the surface being generated may be a conical chamfer (plunging applications) or a beveled corner for the intersection of two planes (traversing applications).
Usage examples of "countersink".
Its windows, like the ones of the cell, were boarded over, the boards not hastily nailed but screwed down with proper Teutonic thoroughness and the screwheads countersunk.
The mark they thus leave on the whale, may best be likened to the hollow made by a carpenter in countersinking for a screw.
The mark they thus leave on the whale may best be likened to the hollow made by a carpenter in countersinking for a screw.
He was using one of the big rusty screwdrivers to scratch the wood-filler from the sockets above the countersunk screws.
The pictorial bands were in countersunk low relief, their background being depressed about two inches from the original wall surface.
It was countersunk with exaggerated depth in bands following the same general line as the sparse car-touches of the earlier sections, but the height of the reliefs did not reach the level of the general surface.
The gate was a miniature version of the Thrall's, vertically raised and lowered by countersunk centre-holed millstones.
The edge was countersunk as if for a hinge, but no sign of that or the gate itself remained.
He had not realized that the whole dome was countersunk this far into the lunar plain, thus reducing the amount of roof structure necessary.
West's expert eye skimmed over stand-alone tools such as a drill press, a drum sander, bench grinder, jointer, thickness planer, shaper, and all the expected chisels, Forstner bits, wire-brush wheels, brad-point bits, plug cutter, countersink set.