Thanks!

Hi Rob, no metric threads on any Triumphs of this era, most fine threads are UNF and course threads are UNC, however some of the engine components have BSF and BSCY threads. Triumph changed some thread forms from BSF/BSCY to UNF/UNC around 1967 and have a mix of the two, BSA did the same although a year or two later, but no metric threads. The Triumph was sold to me as a 1969 bike, however when l got the dating certificate from the Triumph owners club it states the bike was manufactured in December 1968, so the American title that came with the bike states manufactured in 1969, that should really say it was shipped out of the UK in 69 not manufactured. Regards Brian.