Originally Posted by
JohnDThompson
Just to complicate things, Campagnolo used a 7mm Allen on the Victory cranks, and prior to the mid 80s most high-end cranks (Campy, Shimano, Sugino, TA, Sakae Ringyo) used 15mm bolts; only low end models used 14mm bolts. Stronglight and Zeus were the notable exceptions, using 16mm bolts.
Right, I knew there were a smattering of 15 and even 16 mm bolts still out there. My Park CCW-2 has 14, 15 and 16 mm boxes just for that reason. I had forgotten about the 7 mm hex that Campy once used.
All of that said, the OP is most likely to need either an 8 mm Allen or a 14 mm socket these days.