knurled knob for sma connector

I printed the spinner by Jason Wratten (https://www.thingiverse.com/thing:266048) and liked it but it was too thick to work with my Tru-d diversity module, so had a look and ran across Justin's version, so had another look at it, and liked its size but the stl had some cuts in the top and bottom surface.. and I was curious how to do knurling in fusion 360, so I used Justin's dimesions for the nut hole, diameter and thickness of the spinner and created this new one in Fusion 360. I have included