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Meanings of counterbore in English

Russian
зенкер
Wikidata

Flat-bottomed hole allowing a screw head to sit flush with a surface, or a tool for making such a hole.

        зенкер

        A bit for enlarging the upper part of a hole.

              Synonyms
              Examples for "countersink"
              Examples for "countersink"
              1
              Button head bolts are often used on thin holds that have no countersink.
              Rock and Ice Magazine
              2
              Worn somewhat into the soil, this road served as a countersink and strengthened the position.
              Destruction and Reconstruction: / Personal Experiences of the La...
              3
              The valves, C, and their seats, B, bored with a countersink bit, are plainly shown.
              The Boy Mechanic, Volume 1: 700 Things for Boys to Do
              4
              Maximum stress was found on the lateral border of the number 5 countersink of the plate.
              Pubmed
              5
              Drill and countersink two smaller holes for 2-in.
              The Boy Mechanic, Volume 1: 700 Things for Boys to Do
              1
              The valves, C, and their seats, B, bored with a countersink bit, are plainly shown.
              The Boy Mechanic, Volume 1: 700 Things for Boys to Do
              Usage of counterbore in English
              1
              The holes can be counterbored for the heads and then plugged.
              Mission Furniture: How to Make It, Part 3
              2
              To make the matter worse, quite a number of the wheels were found to have been counterbored about ½ in.
              Scientific American Supplement, No. 623, December 10, 1887
              3
              Today I counterbored the four holes in the fenders that will have 3.5 machine screws inserted to act as axles for the wheels.
              Wired
              Translations for counterbore