2a single mounting facility thread class 1.397" overall length 1.375" overall width 48 single mounting facility thread quantity per inch unc single mounting facility thread series
2a thread class right-hand 1.750" overall length 0.688" overall width item must comply with requirements of defense electronics supply center production standard no. L01186 unc thread series
2a thread class right-hand 1.328" overall width item must comply with requirements of defense electronics supply center production standard no. L01189 unc thread series
2a thread class right-hand 2.000" overall length 1.328" overall width item must comply with requirements of defense electronics supply center production standard no. L01190 unc thread series