Lock Nuts KM0 to KM20 can be easily tightened and loosened on shafts, adapter sleeves or extraction sleeves using socket wrenches LOCKNUT-SOCKET-KM. They require less space on the circumference of the nut than hook wrenches and allow the use of ratchets and torque wrenches. For increased reliability, socket wrenches should be secured using a locking pin and rubber washer. FAG socket wrenches therefore have a hole for the locking pin and a groove for the rubber washer. FAG Lock Nut Socket, Square Drive, Series: LOCKNUT-SOCKET-KM, 1/2 in Drive, 25.2 mm ID x 33 mm OD Socket, 82 mm Socket Depth, For Use With: KM2 Lock Nut and ZM15 Precision Lock Nut, Lustrous Silver