Top yoke threads help

[EDDIE SIMPSON]

from poor memory , i thought top yokes used bsf thread not bsc for handlbar clamp bolts.  i will look tomorrow.

[DAVE BRADY]

Eddie,

You are probably right for A10 but certainly later A65 are BSC so perhaps wrong thread has been supplied?

Dave.

[MJM_58SR]

Please could you let me know what you can dig out? I can't find anything that confirms it
Thanks
Martyn

[chaz]

not the same, or at least not checked part number, the 1965 B40 has 5/16 BSC threads...26tpi.