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.
An enlargement of the upper part of a hole, forming a cavity or depression for receiving the head of a screw or bolt.
A drill or cutting tool for countersinking holes.
The placement of screw or nail in wood or metal so that the top of either is flush with or below the surrounding material.
To widen the outer edge of a drilled hole into a cone shape to allow a screw head to be sunk below the surface.
1) a process of machining a larger chamfered hole concentric with an existing hole. The process is often used to provide a below-the-surface nesting cavity for a flat head screw. 2) any of a number of special tools designed to countersink.
A shallow angled or beveled hole that is formed to allow the head of a flathead screw or bolt to be recessed and tightened flush with the surface of the workpiece. The tool designed to produce this special hole is called a countersink.
A countersink is an internal chamfer.
Instrument used to form a flaring depression around the top of a drilled hole. Insertion of an implant beneath the cortical surface of the bone.
to make a hole for the head of a screw or bolt that allows it to be set sub-flush with a surface.
Area where a fastener is recessed below the surface of the millwork.
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
insert (a nail or screw below the surface, as into a countersink)
a tool which cuts a cone shaped depression around the hole to allow a rivet or screw to set flush with the surface of the material
a tool with which a drilled hole's opening can be beveled in order to position the head of a screw or a bolt, used to join sections of a work, even with a material's outer surface
(1) A funnel shaped enlargement at the outer end of a drilled hole having an 820 included angle to allow the head of a screw to be flush with or below the surface. (2) A bit or drill for making a countersunk hole.
A special drill bit that allows a screw head to sit flush with the face of the material it is driven into.
The larger diameter at the entrance of a machined hole with a conical bottom. Similar to a counterbore except for the bottom configuration. The general use of a countersink is for use with flat head screws and bolts.
The action of using a special tool to radius the inside of a hosel in order to help provide a measure of protection, particularly for a graphite shaft. Typically heads are countersunk at a 20-degree angle. The term "countersink" may also be used to describe the tool used (in a drill or drill press) to create the countersink.
An angular beveling or flaring of the end(s) of a hole, outer edge of a counterbore, or at the bottom of a counterbore, that does not extend to the OD or counterbore diameter. (empty)
A cone-shaped depression machined into the mouth of a hole.
A hole bored for a screw so the screw head sinks below the surface.
Chamfered screw hole allowing the screw head to remain level with the mounting surface.
Beveling the mouth of a hole or cavity so that when it is drilled through no burr will be left, or to enlarge a portion of a hole tapered at a specific angle and to a certain diameter.
To drive a nail or screw below the surface.
to set the head of a screw at or below the surface of a material.
Technique of recessing heads of screws and nails below the surface.
a widened top of a hole desiged to sink the screw or bolt head to below the material surface. See hyper dictionary
To cut a tapered recess that allows the head of a screw or bolt to lie flush with a surface.
To cause the head of a bolt or spike to be below the surface of the wood into which it is embedded.
A tool that allows you to drill a hole so that the head of a screw will sit flush with the face of a board.
A hole with a bevelled sides to accept the sloped sides of a flathead screw.
A shallow, conical hole in a workpiece that matches the shape of a flathead screwhead. When used without a counterbore, it positions the head flush with the surrounding surface, shown above.
To enlarge the rim of the screw hole so the screw head can be inserted flush with the surface.
To enlarge a hole in the wood, metal, etc. so that the head of the screw or bolt will fit flush with the surface or below it; to sink the head of a bolt or screw into that hole.
Conical boring in wood to receive a screw head so that the surface of the screw is lower than the wood surface.
A countersink is a tapered hole drilled with a wide outer portion. A common usage 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 hex-headed capscrew.)