First let's talk about U-Bolts.  The biggest misconception with U-bolts is that they are all the same; this could not be farther from the truth.  We feel that U-Bolts are the most important component of a leaf spring suspension and this is why we are so meticulous about the specifications of our U-bolts.  Our U-bolts are made from a cold drawn 1541 alloy that is stress relieved. This produces an alloy that is has grade 8 strength but not grade 8 hardness.  The threads on our U-bolts are 5/8"-18 fine threads and are manufactured with a smooth rolled thread.  The mating Hi-Nuts are hardened as well as the thick washers and are manufactured with sharp cut threads.  When a U-Bolt is tightened the U-Bolt threads stretch as they mate with the Hi-Nuts.  This insures proper tightness of the fastener is maintained.  This stretching is not visible but a U-bolt should never be reused because removing the tall nut will cross thread the U-Bolt.  Our U-bolts bolts have a torque spec of 150 foot pounds and should never be tightened with an impact gun.

        Great leaf spring Perches have to have something strong to work with so when we designed our U-bolt plates we made sure that it had the BEEF. Our U-bolt plates are laser cut from 3/8" and then bent on each end to give you a supper rigid U-bolt plate. These U-bolt Plates have three leaf spring center pin locations to match our Leaf Spring Perches and come in a verity of sizes to match your axle diameter and spring width and have slots to accept our 5/8" U bolts. We even have ½" thick U-bolt plates for Dana 60 King Pin applications. Our U-Bolt plates are sold in pairs