Lug Nut Size?
#1
Lug Nut Size?
I need to buy a socket so I can check the torque on my lug nuts. I have the 18" wheels.
Is the size 13/16" or is it metric? I assume I'll need a 6-point deep socket?
Is the size 13/16" or is it metric? I assume I'll need a 6-point deep socket?
#2
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And that's why the wheel studs and the internal thread of the lug nuts are 1/2"-20, correct?
The proper size socket for the lug nuts is 13/16".
A 21mm 6-point is a sloppy fit but will work if you want to mar your pretty lug nuts.
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Whatever floats your boat is fine with me. Just telling you how it really is.
Try shopping for some Mustang replacement or custom lug nuts. They're all listed as 13/16" on a 1/2"-20 stud. It's been that way since at least the 70s and continues through 2014.
You can use a 21mm socket (0.827") and I have myself, but the 13/16" (0.813") is correct.
Just like your wheels are 18" (457.2mm) or 19" (483.6mm) or whatever, not everything is metric as redmsgt said.
Last edited by F-22; 8/10/14 at 06:37 PM.
#12
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Whatever floats your boat is fine with me. Just telling you how it really is.
Try shopping for some Mustang replacement or custom lug nuts. They're all listed as 13/16" on a 1/2"-20 stud. It's been that way since at least the 70s and continues through 2014.
Just like your wheels are 18" (457.2mm) or 19" (483.6mm) or whatever, not everything is metric as redmsgt said.
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21mm = .8268 in.
13/16" = .8125 in.
Looks like 13/16" would be the tighter fit
13/16" = .8125 in.
Looks like 13/16" would be the tighter fit
Our Mustang and all our other FoMoCos with 1/2-20 studs use 13/16" very well and on wheel lugs, I always always use 6 point deep well sockets (the two Thunderbirds use 3/4 but they have 12mm metric studs) and a torque wrench for tightening.
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I agree with tbear853. If they're the nuts with the stainless cover on them they can be distorted by using a shallow socket, which doesn't normally reach to the bottom of the stainless where the actual shorter inner lug nut is. A deep 6 pt. socket is the best choice to keep distortion to a minimal.
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