Thanks, but I found them this morning at the Ford Dealer. I made a template of the threads with a candle. The bolts on this tractor are actually 5/8". The tractor came with the house. Sometime before we got it looks like the battery leaked and etched the model and serial number plate beyond recognition, so I have trouble when I need parts. From what I can tell there were several versions of it. It is a good little tractor though and does what it was intended to do.