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.
so the ball ended bolt is on the end of the propshaft and winds out to fit the cup end at the front of the bevel box. the old ball ended bolt is bent at the head so Robin did some more technicap drawings and made me a new bolt.....
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