1/2"-20 Heat Treated Drake Lock Nut (2 piece) Plain Finish (3/Pkg.)

Drake Two-Piece Lock Nuts, or Two-Piece Lock Nuts, are free-spinning two-piece lock nuts that can be positioned anywhere along the length of the thread. The two pieces give the nut double-locking action where the bottom nut’s flexible slotted crown digs into a male thread as the second nut is fastened on top. This action locks the nut, providing superior holding power compared to “prevailing torque” style lock nuts in high-vibration applications. These nuts can be found fastening air conditioning roof pads. Drake Two-Piece Lock Nuts are heat treated for Grade 5 applications. Sizes range from 1/4” to 7/8”