67 Driveshaft U-bolt ID Help

[Dereck S.]

Looking for help identifying original driveshaft U-bolts for my 67. I have three different configurations shown below. One has fine threads the other two have coarse threads. There are other differences in the shapes of each as well. I had one CAD plated years ago along with some other bolts thinking it was an original. Perhaps none of them are. Please help provide feedback on the ones shown as well as telling features of what originals look like.
thanks
Dereck

[Joe L.]

Re: 67 Driveshaft U-bolt ID Help

Looking for help identifying original driveshaft U-bolts for my 67. I have three different configurations shown below. One has fine threads the other two have coarse threads. There are other differences in the shapes of each as well. I had one CAD plated years ago along with some other bolts thinking it was an original. Perhaps none of them are. Please help provide feedback on the ones shown as well as telling features of what originals look like.
thanks
Dereck

Dereck-------


The one in the center looks correct. These were always black phosphate-finished, never zinc or cadmium. Thread was 5/16-18.