2b thread class right-hand 3.500" overall length 1.280" overall width 18 thread quantity per inch cadmium surface treated straight type w/cable clamp unef thread series
2a single mounting facility thread class 1.730" overall length 1.370" overall width 32 single mounting facility thread quantity per inch unc single mounting facility thread series
Used on type no. an/tsc-38. 2b single mounting facility thread class 2.312" overall length 1.500" overall width unc single mounting facility thread series