Codes: eCl@ss code@ 23110705; UNSPSC code: 31161716 , Bore/Inside Diameter: 55., 000; Body Outside Diameter: 85., 000; Width/Thickness: 25., 000 Bearing Lock Nuts - KM(K) Series | SKF | MISUMI SKF Lock Nut 55mm Bore N 060 - Lock Nuts And Locking Devices Bearing Lock Nut Locking Device Installation and removal | SKF The locking screws, when tightened to the recommended tightening torque, preload the lock nut and shaft threads and generate sufficient friction to prevent the nut from loosening under normal operating conditions. SKF Bearing Lock Nut And Locking Device 17mm For Use With Radial Bearings, KMK 3 | RS Once the four locking screws are tightened, the lock nut will be accurately positioned at right angles to the shaft thread.