Wheel Stud Question... please help

[jhvaughn]

I have a McGaughy's brake kit I'm putting on my '60 C10. It's the kit for the 63-70. Came with the 7/16 studs and 5 x 4 3/4 bolt pattern. I need to change that out and go with 1/2 studs and the 5 x 5 bolt pattern.

I can't seem to find out what size knurl diameter I need for the 1/2 studs. I know I need 1/2-20 studs, but there are many knurl diameters. I measured the bolt hole and the closest I found to fit is a dormant with a .536 in knurl.

Does anyone know if these are the correct ones? I reached out to McGaughy's but they were not able to tell me the size studs they run in the 5 x 5 bolt pattern (other than 1/2").

Any help would be greatly appreciated!

Thanks,
Heath