Press-in Wheel stud drill size help

[mtbugeye]

Working on a 69 2a (88); Seeking help with what exact size drill bit to use to drill out the stripped threads in the hub from older screw-in type stud to enable a new press-in 1/2" stud (PLC405 R.N. part number). The new press-in stud has an outside diameter of 0.5825" at the mid-point of the splined end that presses-into the stud hole. The lug nut threads are 0.5555 O.D. I assume I'm looking for a few thousand's less diameter than the splines for a tight fit. I plan to use washers, a box wrench or buy one of those special pull through tools.

Looking at drill bit charts a 37/64 (0.5781") appears it would be close?

MTBugeye

[roverp480]

When I did mine, I found the stripped thread in the drive flange was just the right diameter to pull in the new splined portion without opening it up with a drill. . What I did do was recess the back of the drive flange for the head of the stud to sit. To assemble I wound it in using a wheel ( Lug) nut and a spacer washer

[mtbugeye]

I figured this out. I used a 9/16" bit, a couple of thick washers behind the flat side of the lug nut and it pulled right in tight. Hopefully this will help someone else as broken studs seem to be the norm with these little beast's.

[mtbugeye]

Thanks 1st gear, I tried to pull it through without drilling but just wouldn't go, had to open it up a ~16th inch.

[jimrr]

well, that's thirty thousands of a inch ............... it would seem , ( by appearances) enough to allow for the ''smashing'' of metal in between.
I'd have to remind you. this data is available in the books, as a clue, it is probable the standard usa import 15" wheels and the more desireable 16" wheels had the same ID on the stud ID of the rim.