John Gill Commentary Exodus 26:11

"And thou shalt make fifty clasps of brass, and put the clasps into the loops, and couple the tent together, that it may be one." — Exodus 26:11 (ASV)

And you shall make fifty taches of brass
As these curtains were coarser, and also the loops, so the taches, hooks, or clasps, were made of meaner metal, but answered the purpose of joining and coupling together full as well: and put the taches into the loops; one end of the hook or clasp into the loop on one of the curtains, and the other end of the hook or clasp into the loop on the other curtain answering to it: and couple the tent together, that it may be one; that the tent or covering over the tabernacle might be one, as the tabernacle by the like means was, (Exodus 26:6) .