1965 cl72 fender to fork bolts. what thread pitch?

[Mark13018]

I bought some m6 bolts to put my fender on and they had a coarse (1.00) and a fine (1.25). I bought 4 of both of them and tried both and neither work. I think it was a 12mm long bolt but it barely went in and was tight after just 1-2 threads, if that.

The old JIS standard doesn't show a change for m6 fasteners. What gives?

[Hoosier Tom]

If you are mounting your fender to your fender brace they are 5mm bolts, not 6mm and are the old JIS pitch which is 0.9. I believe the pitch you will find now is 0.8. The bolts that mount the brace to the forks are 8mm.

HT

[Mark13018]

Oops. I meant m8 not m6 for the fender to the fork... The 8 hole fender is together and done... I just need to get it onto the bike... Neither 1.00 nor 1.25 thread pitch wants to go in easily and I don't want to strip anything.

[Hoosier Tom]

I believe the 8mm bolts should be fine pitch, 1.00. Of the four bolts that hold the brace to the forks, the one that holds the stay arm is a special bolt for that application.

HT