http://www.gewinde-normen.de/en/cycle-thread.html
Troszkę "poguglowałem" za kolegę i BSA stosuje gwinty BSC:
A z Wikipedii :B.S.A.
B.S.A. (Birmingham Small Arms) was a major British manufacturer of firearms, and later of bicycles and motorcycles. It reached its peak in the 1920's. The standard thread sizes that B. S. A developed for its bicycles were ultimately adopted as the standard British (B.S.C.) sizes, which, in turn, were mostly adopted by the I.S.O.
B.S.C.
British Standard Cycle. The standard dimensions pioneered by B.S.A. were ultimately adopted by the bulk of the British cycle industry under this designation.
Odpowiednie narzędzie (gwintownik czy narzynkę) łatwiej znaleźć pod oznaczeniem Fg 34,8the thread runs at a 60 degrees rather than a 55 degrees angle
W tej tabeli dokładne dane tego gwintu.
Trzeba pamiętać o prawym i lewym gwincie, chyba, że wklei kolega na Loctite.
