If I was doing this I would go to a hardware store and buy two carriage bolts the same diameter as the wheel studs and however long they would need to be to fit thru two of the wheel holes.
One bolt in the long slot and another in one of the other two so they line up with wheel holes.
With the bolt in the bracket hole place a washer and then a nut and tighten.
Same thing for the slotted hole, place the spare on the tight one and align the slot bolt with another wheel hole should be an open hole at the top center.
Make sure the wheel is on the bracket square if it is good then tighten the slotted bolt nut :note: more than one washer mat be needed on each bolt to snug them up.
After all is square and tight use a couple of lug nuts to hold the tire on.
Spare tire cover?
2016 F350 6.7L LB CC Reese 28K 2014 Chaparral Lite 266sab
"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." 2014 19 days camping 2015 17 days camping201620 days camping