I was just browsing through the grainger site and was about to make a purchase for some stainless fittings to make an inline aeration device, however it looks to me that the hex bushings are not threaded on the inside all the way through? Does anyone know if that's the case and if so, where might I get a fitting that is threaded outside and inside on both ends? Basically, I want to screw a hose barb (or aeration stone directly) into the inside thread, and then screw that so it fits inside a "T" with the outside threads, but it looks like these won't work as in the picture (to me anyway) it looks like the inside is not threaded completely through on the end opposite the hex Checking some other fittings sites resulted in similar results
> Hex Bushing,1/2 x 1/4 In,304 SS,150 PSI : Grainger Industrial Supply
> Hex Bushing,1/2 x 1/4 In,304 SS,150 PSI : Grainger Industrial Supply