Lug Nuts

[Randy Wells]

I am putting 5/8" studs in the rear axles, they currently have 7/16 and I can see some issues with them, my Centerline's, have a 60 degree conical seat. What do you all use for lug nuts, shank type or the conical seat type. Would have to enlarge the holes in the rim if I went with shaft lugs.

Randy Wells
I/S 5628

[Dragsinger]

Randy, measure the wheel lug nut hole because it may already be 5/8.

[Randy Wells]

Originally Posted by Dragsinger

Randy, measure the wheel lug nut hole because it may already be 5/8.

Larry, the holes are .562 or 9/16. I am thinking of just going with the 1/2" studs don't think this I/Stick car needs 5/8" we had 5/8 on our 67 D/Stick car, thought I would put them on this car but don't really want to drill the wheel holes. May have to ream them a little for 1/2" shank lug nuts.

Randy Wells
I/S 5628

Randy

[Jack Zimmerman]

Something that hardly ever seems to get mentioned about the typical 5/8" wheel drive studs that a lot of us use is that the shoulder that fit's into and locates the wheel is actually 11/16" in diameter. This is the same diameter as the shank on a standard 7/16" or 1/2" threaded straight shank lug nut made for racing wheels. The 5/8" part of the stud is just the thread size. So if you want to use 5/8" drive studs, the holes in the wheels need to be 11/16" diameter. If the wheel is made for use with conical lug nuts it may not work with the 5/8" studs unless it's drilled out and has enough material left to bear on the stud without deforming under hard acceleration.

[Randy Wells]

Originally Posted by Jack Zimmerman

Something that hardly ever seems to get mentioned about the typical 5/8" wheel drive studs that a lot of us use is that the shoulder that fit's into and locates the wheel is actually 11/16" in diameter. This is the same diameter as the shank on a standard 7/16" or 1/2" threaded straight shank lug nut made for racing wheels. The 5/8" part of the stud is just the thread size. So if you want to use 5/8" drive studs, the holes in the wheels need to be 11/16" diameter. If the wheel is made for use with conical lug nuts it may not work with the 5/8" studs unless it's drilled out and has enough material left to bear on the stud without deforming under hard acceleration.

That is why I am going to go with 1/2" studs, don't want to drill the wheels. Thanks Jack

Randy Wells
I/S 5628

[Larry Hill]

Something to think about, cost of 5/8 studs vs repair cost and body work.

When I broke my 1/2 studs it ruined a 71 Cuda bumper, painted Grill, and a gilled fender. The grill was just north of two grand.