2a single pressure connection thread class 4.156" overall length 0.625" single connection outside diameter 1.500" overall width rectangular unef single pressure connection thread series
2a single mounting facility thread class 0.375" single mounting facility thread length 2.000" overall length 1.625" overall width circular wafer, bushing mount unef single mounting facility thread series
2b second mounting facility thread class 6.438" overall length 3.812" overall width 20 second mounting facility thread quantity per inch unc second mounting facility thread series