I don't know if the front drums are original factory or not, and I don't know if the factory would have used swedged lugs or knurled lugs on my particular vehicle when it was first manufactured.
I tried to test fit the five left-threaded lug nuts on the five studs and this is what I found: Three of the studs screwed on OK by hand, but with some rough spots. One I was able to finish threading on and off employing at the very end the aid of a 3/4" combination wrench. The last one, with the aid of a wrench was so tight that it starting free-wheeling in the drum spindle and now I can't remove that lug because I can't keep it from spinning.
But I did notice that the fourth stud that I used the wrench to take the lug nut on and off is now loose, meaning I can rock it side to side (but it does not spin like the fifth stud). With the lingering doubt as to whether these studs are swedged or knurled, I took a chance with a small punch and small sledge hammer and tapped on the fourth stud (the one that I could rock back and forth a little). It began to move down and out so I kept hitting it with medium sharp blows until it was free. Come to find out, it is knurled.
Now if I purchase the knurled lugs shown in post #7, I wonder if the new ones will be tight enough in all of the holes? I guess they could be spotted with a tack-weld or two without warping things out of round if necessary?
I imagine this studs and lugs have been through hell in their past life, probably been abused by a "tech" trying to remove 'em spinning the wrong direction. Best I take 'em out and replace 'em like I was thinking (and finally have them all right-hand thread to boot). Photos show the removed (knurled) stud and the one that free spins with the lug nut still attached.
Will never know if these are: a) replacement drums with knurled studs or b) if these are factory drums with knurled studs or c) if these are factory drums with swedged studs that were replaced by a previous owner with five knurled studs.
