2a thread class right-hand 0.937" overall length 1.969" overall width 18 thread quantity per inch cadmium surface treated box/wall mount external thread uns thread series
2a single mounting facility thread class 0.375" single mounting facility thread length 2.300" overall length tap, circular, bushing mount unef single mounting facility thread series
3a single pressure connection thread class 2.470" overall length 20 single pressure connection thread quantity per inch unf single pressure connection thread series