Erowa stud for storage

This is a plastic stud body intended for Erowa pallets to use a storage rack that utilizes the expensive factory stud. I modeled it myself using dimensions I measured, so it may not be accurate and should not be used as a model to make a real stud for workholding, this is just if you make a rack that needs the studs, you can screw on these cheap plastic ones instead of the factory units that cost quite a bit. 

The simplified model removes the o-ring and washer relief, and is probably the better one to use.