Spigot bearing carrier bolts

So they're a 3/8" UNF thread. The length used before was an inch and 1/4 in length but now with the spacer its 1 and 3/4 ". The bolts used for past 20 odd years have a round head or a cap allen head tightened up using a 8mm allen key ... The shop has the bolts in heads 1 1/2 " and 2" length with a hex head.  

Dorinda on her iPhone