No Bibio Not all crank arms are compatible on a square taper and work, as I said you need to ensure that the crankset and the bottom bracket are the same standard. The majority now are JIS. I fell foul of this though, after buying a new chainset and fitting it I could not get the chain line correct and then the front mech would not adjust enough so Iended up with a new bottom bracket to get it to work properly. Some info here.
https://www.reddit.com/r/BikeMechani...llowtech_1_vs/
Unless you have a really good local bike shop near you I would give SPA cycles of Harrigote a ring and hope you get the right guy. They are usually very good (or was last time I rang them) It would appear that hollow 1 uses an Octilink bottom bracket, I have no idea what that is. Here is a link to bottom brackets
https://wheelsmfg.com/bb-standards, it does not mention Shimano but it does show how many standard there are. The other problem is ,as Hollowtech 1 is quite old so there is not much info on it. Would it be possible to have a bolt made? Plenty of classic bike chaps do small engineering work. I think crank bolts use normal threads - on the BSA BB one is LH
Adam would be the guy that could help but unfortunately hes not around much these days. By the way I do find SPA own badged stuff good and reasonably priced . Good luck