what size are lug nuts

[portable]

what size are the lug nuts on a bolt, I'd like to get wheel locks and can't find any reference to the thread size ?

 

[gbobman]

19mm

 

[portable]

is that the socket size to remove the lug nuts or the threaded studs that the nuts thread on to ? i need the thread size to order locking lug nuts.

 

[portable]

http://www.jegs.com/i/McGard/671/24137/10002/-1

this is what i think might work for the bolt but I'm not sure ?