Originally Posted by
Ihmemies
Huh, hmm. Looks like hb-rs400 tiagra hub and hb-t610 deore hubs might have those 2mm washers too. Officially they are a "lock nut unit" in shimano pdf. Well for 20€ I guess I could try if they work without the washers.
Forks can be quite difficult to bend.
With the diameter reducing and the curving near the ends, there's a lot of directions it can go wrong if using "crude" tools.
Reducing by 4 mm of spacers is much simpler.
Don't forget to shorten the axle enough if using a QR.
EDIT:
Looking at the docs, I see the thickness isn't specified,
Probably "close enough" though.