Meaning Of The Word Expansion bolt

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Expansion bolt Meaning

Expansion bolt Definition
Expansion bolt Definition

What's The Definition Of Expansion bolt?

expansion bolt in British English
a bolt with an attachment that expands as the bolt is screwed in so as to anchor it in place, used in holes drilled in stone, concrete, etc.
noun: a bolt inserted into a hole drilled in masonry and mechanically expanded to serve as an anchor for shelves, timbers, etc
noun: a bolt that expands on tightening, enabling it to be secured into an unthreaded hole

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