Lawn Boy Locknut Part# 603773

Lawn Boy Locknut part# 603773 has 3/8-16 pitch thread. This nut was used on the wheel bolts of the following lawnmower models; 0292B, 0392B, 0425A, 10356, 10357, 10358, 10359C, 10547, 10760, 10760B, 10927, 1600, 1700, 1800, 3002, 3054, 3055, 3057, 4230, 4262, and 4275. There may be models that use this part that we do not have listed here. Please refer to your owners manual or a parts breakdown for your model, to assure that this is the correct part for your machine, before you order.