Hex Head BushingSpecifications of Hex Head Bushing Size: 1/8" - 4"Pressure Rating: 150 PSIMaterial: 304/316/304L/316L Threads: NPT/BSPT/BSP/DIN2999/DIN259/ ISO7/1Casting Process: Investment Casting ,。,。,。pipebushing sizes,plumbingfittings。