Can someone identify the size of this bolt?

I have a 2012 DCSB and I would like to mount a bracket on the stud in the attached photo. The studs in question are located on the passenger side fender inside the engine compartment. I assume this is a factory jack location on a regular cab or access cab.

Does anyone know what size nut will fit it?

Any help is greatly appreciated.

Thanks.

 

I'm gonna go out on a limb and say 8x1.25


I believe it's where ABS is mounted on some trucks.

 

I agree. If per chance we are both wrong, and the M8X1.25 is too big, then M6X1.0 will be it.

 

I also think its an 8x1.25

 

Your stab at it was correct. It was a M8x1.25. I got a nut and was able to mount my oil catch can. Thanks for the help!!!

 

Post pics when it's done. Curious as to how you routed the hoses. Most oil catch cans have gone on the driver's side.