Re: Question about lug stud

Posted by HH56 On 2011/10/22 18:36:56

This appears to be another Packard and RockAuto gotcha. I find a spec listed for wheel nuts in the torque specs. Size is 9/16-18 and threaded length is about 1". The same size was used on all postwar cars and then seniors in 54 & 55-- part number 338811 which is probably why RockAuto say they fit.

The gotcha is some 54 Clippers and the 55 Clippers use part number 419493 and no size is given that I can easily find. The 56 appears to have a thread size of 1/2-20 (also not listed from what I see) and I would almost bet that will be the same size as yours-but I don't find anything in writing at the moment to verify.

If that is not the size your ordered, I would buy a regular 1/2-20 bolt or nut from hardware store and verify it fits your threads then order new lugs.

In case you missed the post, Kev gave a list of things he has found different in 54 Clippers than what you would expect to find. It apparently was a hybrid change over series and year and lots of things just do not directly cross models as one would expect from past practice.