Used on 1520-01-125-5476 helicopter,observation. 2b thread class right-hand 1.469" overall length 18 thread quantity per inch cadmium surface treated straight type unef thread series
2a single mounting facility thread class 0.437" single mounting facility thread length 2.789" overall length tap, circular, bushing mount unef single mounting facility thread series
2a thread class right-hand 1.234" overall length 24 thread quantity per inch the shell to shell conductivity shall be one milliohm max unef thread series