Used on 7310-01-219-1746 cold food counter,mechanically refrigerated. 2b thread class right-hand 2.125" overall length 18 thread quantity per inch uns thread series
Used on test set,guided missile an/dsm-130. 2b thread class right-hand 2.750" overall length 1.469" overall width 20 thread quantity per inch unef thread series
2a thread class right-hand 1.540" overall length 0.250" overall width 56 thread quantity per inch item must comply with requirements of desc production standard no. L04018; for navy nuclear propulsion plant products only unc thread series