Used on type no. an/arn30. 2b single mounting facility thread class 0.750" overall width 32 single mounting facility thread quantity per inch unc single mounting facility thread series
2b second mounting facility thread class right-hand second mounting facility 3.320" overall length 3.250" overall width 32 second mounting facility thread quantity per inch unc second mounting facility thread series
Used on non-directional beacon (ndb). 2b single mounting facility thread class 2.375" overall length 1.562" overall width unc single mounting facility thread series
Used on type no. an/apq37. 2b single mounting facility thread class 2.280" overall length 1.620" overall width 32 single mounting facility thread quantity per inch unef single mounting facility thread series
2a single mounting facility thread class 1.870" overall length 1.430" overall width 32 single mounting facility thread quantity per inch unc single mounting facility thread series
2a single mounting facility thread class 1.620" overall length 1.400" overall width 32 single mounting facility thread quantity per inch unc single mounting facility thread series
2a single mounting facility thread class 2.620" overall length 32 single mounting facility thread quantity per inch unc single mounting facility thread series
2b single mounting facility thread class 3.560" overall length 2.500" overall width 32 single mounting facility thread quantity per inch unc single mounting facility thread series
Used on type no. c-1281/u. 2b first mounting facility thread class 4.930" overall length 3.500" overall width 32 first mounting facility thread quantity per inch unc first mounting facility thread series
2a single mounting facility thread class 1.620" overall length 1.430" overall width 32 single mounting facility thread quantity per inch unc single mounting facility thread series
2b single mounting facility thread class 2.460" overall length 1.000" overall width 40 single mounting facility thread quantity per inch unef single mounting facility thread series