2b single mounting facility thread class 5.460" overall length 1.750" overall width 32 single mounting facility thread quantity per inch part number to be marked on mtg plate square wafer, panel mount unc single mounting facility thread series
2a single mounting facility thread class 0.437" single mounting facility thread length 1.899" overall length tap, circular, bushing mount unef single mounting facility thread series
2a single mounting facility thread class 0.438" single mounting facility thread length 2.413" overall length tap, circular, bushing mount unef single mounting facility thread series