2a single mounting facility thread class 0.437" single mounting facility thread length 2.180" overall length tap, circular, bushing mount unef single mounting facility thread series
2a thread class right-hand 2.340" overall length 0.245" overall width 56 thread quantity per inch position no. 1 drilled for polarization unc thread series
Used on 16 in./50 gun turret. 2b second mounting facility thread class right-hand second mounting facility 3.250" overall length 3.090" overall width 32 second mounting facility thread quantity per inch unc second mounting facility thread series
2b thread class right-hand 2.350" overall length 1.046" overall width 24 thread quantity per inch cadmium surface treated straight type w/cable clamp unef thread series
2b thread class right-hand 1.500" overall length 1.197" overall width 18 thread quantity per inch cadmium surface treated straight type w/cable clamp unef thread series