If it is, then it's a pretty ill-conceived idea! The bolt could quite easily work its way out, leaving the nut to drop off the endIts to stop the nut coming off the bolt.then the bolt wont come out accidentally
The nut is the nylock type so it will not spin off. I can halfway get an open wrench 15/16 on it (or 24mm), let alone turn it.Its to stop the nut coming off the bolt.then the bolt wont come out accidentally
As the axle moves, the force on the bush and thus on the bolt will vary both in amplitude and direction. In between it will sometimes become zero, allowing the bolt to work loose.The bolt will not spin off because it is under shear load all the time. the nut however isnt and if it it not torqued up correctly and does come loose it could spin off.