2b thread class right-hand 2.750" overall length 1.125" overall width 20 thread quantity per inch cadmium surface treated straight type w/cable clamp unef thread series
2a single mounting facility thread class 0.375" single mounting facility thread length 1.858" overall length circular wafer, bushing mount unef single mounting facility thread series
2a single mounting facility thread class 0.375" single mounting facility thread length 1.421" overall length contact 17 is a dummy type contact circular wafer, bushing mount unef single mounting facility thread series