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counterbore

/ˈkaʊn.tə.bɔːr/

翻译: 一种刀具,即用于扩大已钻孔上部直径的钻头,通常使螺钉或螺栓头部与表面齐平或低于表面。

1 个条目

noun

/ˈkaʊn.tə.bɔːr/C2formaltechnical
  • zh一种刀具,即用于扩大已钻孔上部直径的钻头,通常使螺钉或螺栓头部与表面齐平或低于表面。

A tool, specifically a bit, used to enlarge the upper part of a drilled hole, typically to allow a screw or bolt head to sit flush with or below the surface.

  1. Enlarged hole sectionC2formaltechnical

    A cylindrical flat-bottomed enlargement of the upper part of a drilled hole, designed to receive a screw head or bolt.

    zh沉孔

    • The mechanic used a counterbore to create a recess for the bolt head.
    • The drawing specified a counterbore depth of 5 millimeters.
    • A counterbore ensures the screw sits flush with the surface.
  2. C2formaltechnical

    A rotary cutting tool with a pilot, used to create a counterbore hole.

    zh锪钻

    • He selected a counterbore bit that matched the screw head size.
    • The machinist sharpened the counterbore before use.
    • A counterbore is often used in metalworking and woodworking.
词形
  • counterbores plural form
  • counterbores' possessive plural form
  • counterbore's possessive singular form