2a single mounting facility thread class 1.000" single mounting facility thread length 2.125" overall length 0.938" overall width square wafer, panel mount unef single mounting facility thread series
2a mounting facility bushing thread class 28 mounting facility bushing thread quantity per inch requires test in fc 77 for hawk missle unf mounting facility bushing thread series
2b single mounting facility thread class 4.125" overall length 1.500" overall width 40 single mounting facility thread quantity per inch unc single mounting facility thread series
2b single mounting facility thread class 4.250" overall length 1.500" overall width 40 single mounting facility thread quantity per inch unc single mounting facility thread series