allen screw

1. 1.

   a screw with a hexagonal hole in the head

   Broaderscrew

Questions about allen screw

What does allen screw mean?

allen screw means "a screw with a hexagonal hole in the head".

Is allen screw a common word?

allen screw is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.