2b single pressure connection thread class 0.500" single connection inside diameter 0.500" single pressure connection thread length 3.281" overall length 1.750" overall width 20 single pressure connection thread quantity per inch rectangular w/bracket unc single pressure connection thread series
2a single mounting facility thread class 0.437" single mounting facility thread length 4.225" overall length tap, circular, bushing mount unef single mounting facility thread series