Boyd’s Bible Dictionary:
(tack). Taches were hooks or clasps of gold or copper for connecting the tabernacle curtains (Ex. 26:6,11).
Concise Bible Dictionary:
Some form of fastening with which the curtains of the tabernacle and of the tent were coupled together, as is often done with a hook and a loop, so that they could be easily separated (Ex. 26:6,11,33).
Strong’s Dictionary of Hebrew Words:
Meaning:
from 7164; a knob or belaying-pin (from its swelling form)