Tri Groove Machine Screws
Tri-groove machine screws are installed, removed and reused with a special wrench that permits access to recessed mountings or deep channels. They can be used when there is no access to the fastening from the side.
These are zinc plated steel tri groove machine screws that work with all of our security nuts.
Be sure to add a socket to fasten the security screws. The TGSS10 socket works with all 1/4" machine and sheet metal screws.
If you need a driver for the screw sockets, we offer a screwdriver (TGD10) and power drill adapter (TGDA10). The TGSS10 Tri-groove screw socket will fit standard 1/4" drivers.