U-bolts, studs, nuts and washers to replace your front leaf springs on a 93 and prior kingpin dana 60. These are all 9/16.
   There are a few 1/2 bolt/stud dana 60’s out there. We suggest using 9/16 minimum for the 3 u-bolts And if necessary increasing the hole diameter in the top plates. (It’s not uncommon to use 5/8 u-bolts and even add a 3rd stud in extreme applications, we offer these parts too) The studs can utilize a 1/2” fine thread bolt if needed, or if you want, they can be drilled and tapped to 9/16. 
Comes wi

Bolt length notes;

   the threaded holes in your axle are approximately 1-1/4 deep. A typical leaf is about 3/8” thick. A typical skyjacker 5 leaf pack is 1-7/8” thick. A typical top plate is 3/8” thick. We ALWAYS suggest getting rid of the bottom shim that messes up your good driving positive caster. We usually recommend for most lifted trucks to run our offset spring plate to move the axle forward an inch, it’s 1/4” thick. We often suggest removing one or two leafs from the bottom of a 5 leaf pack to improve ride quality. These numbers along with a washer thickness can help determine the bolt length that would work best for you if not using the supplied studs.