What is the thread pitch of the mudguard eyelets from mid 90's Marin frames?

[Tootyred]

As they say....the proof is in the pudding or something like that. 95 palisades.

These are just standard m5 x 0.8. Ive never had a marin that did not use these for everything including bottle cages. Put in with my fingers, no tools, easy going.

Have you tried running a m5 tap through to clear the paint out?