2b single mounting facility thread class 4.781" overall length 3.250" overall width 32 single mounting facility thread quantity per inch unc single mounting facility thread series
2a single mounting facility thread class 0.437" single mounting facility thread length 5.013" overall length tap, circular, bushing mount unef single mounting facility thread series
2a single mounting facility thread class 2.219" overall length 1.531" overall width 32 single mounting facility thread quantity per inch unc single mounting facility thread series
2b single mounting facility thread class 4.047" overall length 2.828" overall width 24 single mounting facility thread quantity per inch tap, circuit selector unc single mounting facility thread series
2b single mounting facility thread class 5.937" overall length 2.812" overall width 24 single mounting facility thread quantity per inch tap, circuit selector unc single mounting facility thread series
Used on aircraft,phantom f-4. 3b all pressure connection thread class 20 all pressure connection thread quantity per inch weapon system essential unf all pressure connection thread series