These nuts are used to provide a threaded socket in wood.
Simply tap the nuts into a suitably sized hole and the prongs will hold them in position.
T-Nuts provide a strong, reliable and easy to fit low cost anchor for wood and chipboard.
T nut inserted into the appropriate size hole and tapped in with a hammer.
The 4 prongs will stop the T nut from turning when the fixing is being tightened.