https://old.reddit.com/r/typewriters/comments/1op26q1/olivetti_studio_42_spool_nuts_size/
DIN 466 M3 nuts fit most Olivetti Studio 42s as replacement spool nuts, but some of the earlier models use smaller ones.
https://old.reddit.com/r/typewriters/comments/1op26q1/olivetti_studio_42_spool_nuts_size/
DIN 466 M3 nuts fit most Olivetti Studio 42s as replacement spool nuts, but some of the earlier models use smaller ones.