I gave up trying to understand the haphazard way in which BSA delivered the change over to unified Fasteners. The 5/16" rocker cover studs are unified, but the 1/4" are CEI, on the same head casting!?!

Knowledge speaks. Wisdom listens.

72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"
92 BMW K100rs "Gustav"