finding right hairspring for UT6360

[east3rn]

Hello dear watchmakers.

I am working on a Unitas 6360 movement, Swiss made from 60s.

I definitely have to get new hairspring for this watch and I am searching the web to get the best deal..

On ebay, I found hairsprings for UT 6475 , UT 6310 and UT630. I wonder if these would work.

Also, is it OK to install screwed balance instead of non-screwed??

Any advice would be grateful.. Thank you!

[VWatchie]

I suggest that you look at Ranfft.de where the dimensions of the 6330 mainspring is listed, then compare it with some similar Unitas movements having the same mainspring dimensions and then search CousinsUK.com for a mainspring suitable for any of those calibres.

[Nucejoe]

Your best bet is buying 6360 complete balance. 

Both  screw type or anulare would work.