14mm is the closest thing.Anyone know what the nut size is on the OEM rods? 14mm and 9/16" are too large and 13mm and 1/2" are too small. I'm thinking 13.5mm. Why does Ford do this to us?
It has to be either one of those that you tried. I know 90% of the rods out there use a 3/8 fine thread pattern. Bolt/nut sizes are measured by the diameter of the threaded part, not the hex.
I thought you were wanting to know the actual size of the nut and not the hex.
14mm for sure....
'89 and '90 would be similar if anything. 9/16 is a little too big and would start rounding off and the 14mm fit pretty good. Obviously 14mm is smaller than 9/16, but just try it unless it really is just too loose to do so?