Review on 🔩 ProForm 67927 3-Inch Malleable Aluminum Collector Gasket Kit with 3-Holes, including Bolts and Nuts by Fredrick Edwards

gaskets are quality, stainless steel screws are also good. I don't understand what's wrong with the nuts in this kit, they have a different thread than the bolts. I installed the bolts/gasket to the manifold, started the nuts and tried to tighten them with an impact wrench, it turned a few turns and stopped. I thought maybe I kind of crossed the topics. Tried another, twisted it by hand, twisted it a couple of turns, then stopped, tried to do the rest with a percussion gun, did a couple of turns, then literally welded to the stud. I had to cut off both nuts, they didn't turn away. Use the other 3/8 nuts I had for the rest, which worked great with the screws that came with it.