The only way to know for sure is to pull it again and measure the depth of splines on both the wheel and the mast. If the depth on the mast is greater than on the wheel and there are more threads than the width of the nut you should have threads showing.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.