Adam? There is a guy on Ebay that makes adapters for the stud on your auger. That thread is metric and not a common size I checked with Lane/Hacket and they didn't even have a tap that size iirc it's 15 X 1.5. I think the the guys name on Ebay was six elk. If you are going to buy a set of blades shop Ebay for the old ones made in Sweden the new ons are chinese junk.