7/8"-9 Two Way Reverisble Hex Locknuts/Steel/Zinc (Quantity: 25)

Two way Reversible Lock Nuts (also known as Centerlock Nuts) get their name because of their functionality and ability to be used either top-up, or top-down. | wo Way Lock Nuts feature indentations on the outside flats of the nut, distorting the internal threads to increase resistance on the mating part. This creates a locking mechanism in the center of the nut. | Having the locking portion within the hex nut offers several benefits including versatility in application, speed of application (which helps on assembly lines), and application environment versatility. | Screw Size-Thread Pitch: 7/8"-9 | The compressions create slightly distorted center threads resulting in a controlled locking action when the threads of the mating part become engaged.