I ordered spring eye bolts from JC for the front leaf springs. Unfortunately, they're too short by @ 3/8". They said they don't carry them for the 2-tons. The machine shop where I work can make em up for me but need to know what the metal grade is of the bolt. Anyone know what that may be? There's nothing stamp or embosed on the news one I got, but on the old bolts there's an "E" on the head, that's it. Could it be grade 5?

Thanks alot!
~Ron