Rear seat bolt thread

[cryptospook]

Can anyone do me a huge favor and pull the lower 10mm bolt in their backseat bracket and tell me what the thread is? I can't seem to find bolts that fit it...

It seems like #10 but it's some kind of not stocked coarse thread variation. Anyone got one to measure? Thank you!

 

[cryptospook]

I never got a good answer but I think it was an m6x1.0 that I used and just sent it.