Not aligning the threads up correctly and forcing the lug nut onto the wheel stud will strip the lug nut.
Use an impact wrench to either remove it or break it. Then replace the lug. Cut it off with a chisel if you can't get a socket on it.
you can try at your local hardware store to find a specific wrench that will fit it. on the end of the wrench it looks like little small metal rods at the end and it should fit right over the stripped nut and take it right off.
With a wrench.
There are two reasons for a stripped lug nut: Installed incorrectly, threaded on at an angle. Overtightened, generally by some one with an air impact and not torquing to value.
If your lucky you can pound a smaller socket onto the nut and remove it. More often than not you need to weld a larger nut onto the stripped one, then turn the larger nut. Most tire shops can help if you don't happen to own a mig welder.
the lug nut adapter is located in the trunk with your jack, spare, and lug wrench, if you have taken it to a shop they may have put the adapter in your glove box, its about twice the size of a lug nut.
The lug nut size for a 240sx with a four lug pattern is 10x1.25. The lug nut size is 12x1,25
It unscrews and it is plastic. Discount Tire stripped mine out with an impact. Now I am looking for a new one.
The Honda CR-V lug nut size is a 19 mm lug nut. The 2000-2002 size was a 21mm lug nut.
It requires a special "key" to remove that nut.
Uncrew the fiber nuts the same way you the lug nuts.