On Dec 19, 11:36*am, "Novice" wrote:
I believe they came from an army dump.
Nothing to do with bicycles I think.
From an other source I heard them indeed mentioned as "cycle thread" but I
have never seen M 1,5 on an bike.

M2 is right for the bicycle spokes I just measured.
Some spokes could be M 1.5, it would be somewhat
less than surprising.