OEM Roll bar bolt size into wheel well (1 Viewer)

[Aaron3140]

I need some help fellas. I replaced my wheel wells due to rot. Could somebody advise on the bolt size that attaches the roll bar to the wheel well support bracket? Previous posts said M10 x 1.25 but it seems a little small for the roll bar mounting hole. Any advice would be appreciated!

 

[JDNs78FJ40]

Just located mine from a 78 FJ40. Appears 12 of them are 10x1.25 and 4 that go to the seatbelts for the jump seats are 12, not sure on the pitch.

 

[Aaron3140]

Thanks for the info!

 

[BRShap]

I believe the seatbelt bolts are 7/16 because of DOT rules. I think its the only non metric fastener on whole truck. I've read M11 bolts will work too as they are very very close.

 

[Aaron3140]

So this is what I have so far and thanks for the responses....7/16 fine thread grade 8...DOT requirement where the seatbelt attaches to the roll bar. M10 1.25 (1 inch and a 3 inch in length).

***Any idea what size bolt for the roll bar foot into the wheel well?***