Ute leaf spring bolt keeps snapping

[BLULMN]

So boys have a ba manual Ute welded my diff a couple of weeks ago for some extra fun and I keep snapping the bolt that holds the leafs together, has anyone had this problem and found a real solution?? I’ve tried putting high tensile m8 bolts in but because the head of the bolts are so short the diff doesn’t have a comfy place to sit so the diff just slides back and forth. I’ve also tried putting a couple of nuts either sids of the leaf to stack it up a bit but I just bent and snapped them in seconds. Thanks 

Edited 28/06/19 04:34 PM by BLULMN

[OZYWALKER]

Male sure the u bolts are properly tight. They should be taking the load not the locating bolt.
Sounds like it's twisting the axle left/right when you cornering.

Also check the bushes are decent, if not get some metal plates to take up the slack where the bushes were.

[arronm]

Get some new bolts with the correct size from a spring manufacturers like kings or pedders.

 

Maybe post an image of your issue