The BSA A7-A10 Forum
Technical (Descriptive Topic Titles - Stay on Topic) => A7 & A10 Engine => Topic started by: KeithJ on 04.08. 2015 14:05
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For the centre screw which retains the ball, is there a 3/16 dia screw? I have just purchased a new set but my barrels are threaded 3/16" BSF but the screw is a 1/4" BSF. I think some one has put in a smaller thread but I can' think why?
Just about to rethread it.
Appreciate any guidance which can be given.
ATB