Countersink and countersunk are the same meaning.
Countersink is English word
Countersunk is German word
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Present tense, and past tense.
"I need to counersink these screws."
"These scews were countersunk"
Countersink can also be a noun- name of the tool used for that purpose.
"The screws were countersunk with a countersink."
countersink
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To countersink is to penetrate past the exterior level. For example if you screw a screw into a piece of wood with a screw gun that is set on drill, and it penetrates past the surface it would be countersunk.
Countersinking is the drilling of part of the metal/wood, so as to allow an ordinary countersink screw head to lie flush with the surface. The angle of the head of a countersunk screw differs from the angle of a standard drill. So one should use a special countersink drill for the job. It is not proper to prepare the hole, for a countersunk head, by using a standard metal drill.
A countersink is a tool that creates a groove and a hole that allows the screw to be easily screwed inside of the wood's surface, while the countersink only creates a hole to allow the screw to be easily screwed in. The crown of the screw is exposed on the surface if the countersink is used. If the counterbore is used, the screw is not exposed directly, as it is inside the groove that is made.
A countersink is used to recess a countersunk wood screw into the surface of the wood. It is a conical shaped area at the surface end of a screw hole and made by a counter sink drill bit. Detailed descriptions and diagrams are at the web liknk below.
A countersink bit.
those are not anything like common angles. Usually countersinks for flat head screws are 82 degrees. some countersinks do 90 degrees. And that's about all you see are 82 and 90 degree countersink bits. 100 degree and 130 degree countersinks are more often found in Aircraft flush fittings/bolts
Made from 1907-1940 Early ones do not have counterbored chambers. Later models had countersunk chambers in .22 starting around 1932.
A countersunk screw is one which hides the head below the surface of the wood or material. This provides a smooth surface after the screw is driven in.
A countersunk screw is one which hides the head below the surface of the wood or material. This provides a smooth surface after the screw is driven in.
You can use a countersunk screw in projects that involve wood. This might be a bench or even some sort of container that opens and closes.
usually the walls are to thin
Glenn Odekirk,