Expansion anchor


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Expansion anchor

Bolt that is inserted into a hole drilled into masonry or other material, with a device on the end that expands, prohibiting the bolt from being withdrawn.

expansion bolt

expansion bolts
An anchoring device having an expandable socket that swells as a bolt is tightened into it; used in masonry walls for attaching timber, etc.
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On the West Side, Columbia University's expansion anchors new development.
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Nylon expansion anchors expand as the screw is tightened.
Wall anchors
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LOST VALLEY FISH HATCHERY EMPHASIZES: Water Conservation
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