2a single mounting facility thread class 0.422" single mounting facility thread length 3.174" overall length tap, circular, bushing mount unef single mounting facility thread series
2a single mounting facility thread class 0.281" single mounting facility thread length 3.156" overall length 1.187" overall width square wafer, panel mount unef single mounting facility thread series
2a thread class right-hand 2.125" overall length 0.875" overall width 40 thread quantity per inch item must comply with requirements of defense electronics supply center production standard no. L00677 unc thread series