>>1700417some options that come in 120 124 and 126 mm over lock nut distances, and use an pre historic spline pattern (old UG ?)
Dura Ace EX
FH-7260
600 EX
FH-7261
FH-6208-R
slightly less old
FH-1050-6
you may also encounter the MF-Z012 on bikes made between 1986 and 1989
overall its a bit of a cluster fug / transitional period, by 1991 both sun tour and shimano are going to 7 speed for new products