2a single mounting facility thread class 0.250" single mounting facility thread length 1.313" overall length tap, circular, bushing mount unf single mounting facility thread series
2b single mounting facility thread class 2.455" overall length 1.450" overall width 32 single mounting facility thread quantity per inch in-line, cam actuated unc single mounting facility thread series
0.375" single threaded bushing thread length 1.090" overall length 16 single threaded bushing thread quantity per inch weapon system essential plug unf single threaded bushing thread series