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Definition of Counterbore
1. Noun. A bit for enlarging the upper part of a hole.
Definition of Counterbore
1. n. A flat-bottomed cylindrical enlargement of the mouth of a hole, usually of slight depth, as for receiving a cylindrical screw head.
2. v. t. To form a counterbore in, by boring, turning, or drilling; to enlarge, as a hole, by means of a counterbore.
Definition of Counterbore
1. Noun. A cylindrical recess, typically machined around a hole to admit a screw so that it sits flush with a surface. ¹
2. Noun. The tool with which a counterbore is machined. ¹
3. Verb. (transitive) To create such a cylindrical recess. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Counterbore
Literary usage of Counterbore
Below you will find example usage of this term as found in modern and/or classical literature:
1. The Mechanical Engineering of Power Plants by Frederick Remsen Hutton (1897)
"... fitted to such nuts in order to avoid mutilating the corners. Such wrenches
and spanners accompany every well-made engine. 160. The counterbore. ..."
2. International Library of Technology: A Series of Textbooks for Persons by International Textbook Company (1903)
"As it is rather difficult to remove the bushing, this method of making a counterbore
adapted to several sizes of holes can only be considered as a makeshift ..."
3. Modern Shop Practice: A General Reference Work by Howard Monroe Raymond, American Technical Society (1916)
"142 represents a taper-shank counterbore for a taper collet, while Fig. ...
Typical counterbore with Taper Shank Fig. 143. Typical counterbore with Straight ..."
4. Tool Making: A Practical Treatise on the Art of Making Tools, Jigs, and by Edward Russell Markham, American Technical Society (1919)
"Then the templet is placed in position, and, by means of a counterbore having a
pilot which fits the hole in the templet, the jig is counterbored to the ..."
5. The American Machinist Shop Note Book: A Collection of Articles by E.A. Suverkrop (1919)
"ECONOMICAL HIGH-SPEED STEEL counterbore In view of the present high price and
the difficulty of obtaining high-speed steel, it behooves both designer and ..."
6. Direct-acting Steam Pumps by Frank Ferdinand Nickel (1915)
"This is the case in a compound pump where the intermediate head is centered in
the counterbore and also when the front head, with its stuffing-box, ..."
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