3.844" overall length 2.843" overall width 20 single mounting facility thread quantity per inch tap, circuit selector unc single mounting facility thread series
2b thread class right-hand 1.656" overall length 32 thread quantity per inch passivate surface treated straight shape, solid internal threaded coupling uns thread series
2a single mounting facility thread class 0.250" single mounting facility thread length 12.250" overall length 1.625" overall width circular wafer, bushing mount unef single mounting facility thread series