Taking apart the frame on my 46 1/2 ton pickup I’ve noticed a lot of the bolts are fine thread. Is there a particular reason for this? A few of the parts include welded nuts so I guess I’ll have to case them down as my supply is all coarse thread. For the application where Nut and bolt are used does it make a difference if I replace with coarse threaded bolts?
Just wondering if there’s a critical reason for this.
