About 8 months late, but the four on mine are 1" 10-24 bolts/screws. Just busted one of mine taking it off to change the rubber base and put new decals on it. For some reason, my local hardware store doesn't carry them. Also, even though classic parts and lmc carry new emblems 'with all hardware', they don't carry replacement screws for old ones. Now I'm finding that if I order any from McMaster Carr or amazon, i'll have to get at least 25 of them to get one. Surely somebody carries this size bolt in hex head!