Exodus 36:18 in the King James Version
And he made fifty taches of brass to couple the tent together, that it might be one.
Context
17 He made fifty loops on the edge of the curtain that was outermost in the coupling, and he made fifty loops on the edge of the curtain which was outermost in the second coupling.
18 He made fifty clasps of bronze to couple the tent together, that it might be a unit.
19 He made a covering for the tent of rams’ skins dyed red, and a covering of sea cow hides above.