B1374593 Bolt and 3057720 Lock Nut 12mm. Priced and sold as set of one.
This item is a suitable alternative for the following: 798-RF593720, 137.4593, 1374593200K, 305.77.200, B1374593, B1374593WN6, B1374593WN5, B1374593WN-6, B1374593WN-5, VNB1374593KN