Originally Posted by RainmanP
It seems to me that track lockrings are pretty universal but you never know.
Naw. Shimano, Suzue, Surly and Suntour all use 1.29 x 24 tpi.
Campy, EAI and Phil Wood use 33.5 x 24 tpi.
Bianchi Pistas come with Shimano Dura-Ace cogs & lockrings when new, so you should be OK with a Surly lockring.