2022年8月9日 · The counterbore symbol is used on a drawing to indicate that a counterbore hole feature is required. A counterbore is a flat-bottomed cylindrical hole that is larger than and coaxial to another cylindrical hole. It is used to provide a flat …

In machining, a counterbore (symbol: ⌴) is a cylindrical flat-bottomed hole that enlarges another coaxial hole, or the tool used to create that feature. A counterbore hole is typically used when a fastener, such as a socket head cap screw or fillister head screw, is required to sit flush with or below the level of a workpiece's surface.

2022年10月7日 · What Is a Counterbored Hole? A counterbore is a simple hole with a wider hole above it. The 3D model below shows a counterbore with the same counterbore next to it cut in half: What Is the Counterbore Symbol? The symbol used for a counterbore is ‘⌴’. How Are Counterbores Shown on Engineering Drawings?

The counterbore symbol is used on a drawing to indicate that a counterbore hole feature is required. A counterbore is a flat-bottomed cylindrical hole that is larger than and coaxial to another cylindrical hole.

2021年2月16日 · What does a counterbore look like? The GD&T callout for a counterbore is shown below. The counterbore symbol will often be used together with the diameter symbol and the depth symbol. Older blueprints may specify a counterbore with the notation CBORE instead of the counterbore symbol.

2022年12月16日 · A counterbore creates a mounting surface that is both flat and recessed while a spotface simply offers a level mounting surface. This article highlights the differences between spotface holes and counterbore holes. These holes are compared in terms of shape, depth, callout symbol, and applications.

The symbol for a counterbore is ⌴ , and here’s an example call-out from a drawing containing a counterbore for a binding head machine screw: The drawing shows a 1.78 inch diameter thru hole underneath a 3.97 inch diameter counterbore, to a depth of 0.81 inches.

What symbol represents a counterbore in technical drawings? Understanding what is a counterbore, as well as countersink holes and countersunk holes, is essential for anyone involved in construction or machining, especially when using a …

2024年2月12日 · The symbol denoting a counterbore is ⌴, with an illustrative call-out from a drawing featuring a counterbore for a binding head machine screw provided as follows: [example call-out]. The diagram depicts a 1.78-inch diameter through-hole situated beneath a 3.97-inch diameter counterbore, extending to a depth of 0.81 inches.

2023年7月19日 · Counterbore is a flat bottom cavity. It allows a bolt or a fastener to sit flush with the work pieces. This is a common hole type for screws.