Leaf spring U bolts torque spec

Do they sell the U-bolts with the flatted saddle for the axle tube? I remember for a while there they were just bent rod and no flat! I think that's why I reused my old ones!

I rebuilt the springs on my 66 with new pads and steels, hope I gave em a shot of grease but I doubt it!! Doh!! Good info here, thanks Rob!