Replacement Maschio Jolly blade mounting nut and washer kit. Original equipment replacement parts, the 18mm nylon locking low profile nut and the matching 18mm shnorr washer are exact replacements for your mower. Sold in sets of three each. Order them with a set of replacement blades and we will ship these in the same box for free, sorry no free shipping on nut and washer kits sold alone! Maschio Part numbers: 00554201 / 00553616 We offer a complete line of replacement Maschio Jolly parts, if you don't see the parts you need listed please contact us we would love to earn your business. We are listing new items frequently so please check our store often. We stock a wide variety of replacement parts for Agricultural Equipment please contact us if you have any questions or if you would like more information.