If its the allen head then they changed it from a phillips head. I have one here for it thats the phillips head. I found local hardware stores cant match up some of the specialty nuts, bolts, screws, etc. on lawn equipment. So I just buy 3-6 of whatever it is or whatever parts supplier has on hand at the time. Not worth the gas to drive to 3-4 hardware stores to come home empty handed. Plus Fastenal makes ya buy whole buy bag if its unopened bag.