It is a right hand thread.
Right hand thread
I've had 4 Craftsman mowers. All have been right hand (standard) thread.
Right hand thread
Turn the bolt to the left. I just did it to mine today. Lefty loosey.
Set the mower on a work tabletop to access the blade(s). If it is a riding mower, put it on ramps. Locate the bolt(s) that secure the blade. Hold the blade in place with one hand while removing the bolt(s) with the other hand using a ratchet and appropriate socket or wrench. Pay careful attention to which side of the blade is down or which way is up so you can reinstall the same way,
Regular right hand thread to my knowledge, lefty-loosey, righty-tighty.
Worked it out, right hand thread, clockwise to undo it.
Right hand thread
A right hand thread is one where a nut moves in the direction of the way the thumb points on your right hand if the nut is turned in the direction of the curl of the fingers (or the direction the fingers point) of your right hand. The same is true for a left hand thread using the left hand, of course.
it means the thread on the right hand side of the tire
More than likely it is right hand thread.
i am sure its left hand thread