WordReference Random House Unabridged Dictionary of American English © 2026
expan′sion bolt′, [Building Trades.]
  1. Buildinga bolt inserted into a hole drilled in masonry and mechanically expanded to serve as an anchor for shelves, timbers, etc.

'expansion bolt' also found in these entries (note: many are not synonyms or translations):
molly

Forum discussions with the word(s) "expansion bolt" in the title:


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