This listing is for one T-Groove security nut socket.  This listing is for the socket (tool) only.

  • Size: 440
  • Sold: Individually
  • Made in the U.S.A.

T-Groove security nuts feature a tapered diameter, making the nuts resistant to gripping devices. Security nuts are installed using this special T-Groove socket. T-Groove nuts are also referred to as Tri-Groove.

440 Socket Sizing / Fits:

  • 1/2" T-Groove Nuts
  • 12 mm T-Groove Nuts
  • 14 mm T-Groove Nuts
Use T-Groove security nuts anywhere you want to keep what's yours.   Our customer's have used these on everything from construction equipment to automotive LED light bars to bicycle wheels.  Multiple sizes are available in our eBay store.