Plasma torch, or you can get a special key that you hammer on and screw off the lug
With a wrench.
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
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.
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.
A missing lug nut can be quite dangerous for anyone who is driving. This means that the wheel is not as tight as it should be and it can come off especially when one is driving at high speeds.
I think you mean wheels but no a 5 lug can not be converted onto a 6 lug
You first need to loosen the plastic lug nut covers until they are no longer attached to the wheels lug nuts under the cover. After all five plastic lug nut covers are loosened completely from the lug nuts, you can gently pop the cover from the wheel. If the plastic lug nut covers have been damaged so they are not removable, you will need to get some needle nose pliers and basically break off the plastic lug nut covers. (The plastic lug nut covers keep the wheel cover attached to the wheel. The plastic lug nut covers snap into the wheel cover.) And then the game is on----finding replacement plastic lug nut covers and/or wheel covers......speaking from experience!!!