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added by Ninjai Dec. 28, 2017, 2:33 p.m.
The element visible in the picture, called a nut, is a part of a ...
door lock
tap
bicycle hub
crossbow
Nut is a rolling cylindrical pawl. It has a perpendicular centre slot for the bolt, and an intersecting axial slot for the string, along with a lower face or slot against which the internal trigger sits.
Ninjai
0
Correct this question
wikipedia → Crossbow
3
Very interesting!
reach: rather globalmechanicstechnologyweapons

Votes

+1 Very interesting!  globalquiz.org
+1 Very interesting!  misanthrope
      Acceptable  Eolia
+1 Very interesting!  th3pizgat0r