2a single mounting facility thread class 0.313" single mounting facility thread length 2.376" overall length circular wafer, bushing mount unef single mounting facility thread series
2b second mounting facility thread class right-hand second mounting facility 3.250" overall length 3.090" overall width 32 second mounting facility thread quantity per inch unc second mounting facility thread series
2a single mounting facility thread class 0.281" single mounting facility thread length 2.031" overall length 1.125" overall width square wafer, panel mount unef single mounting facility thread series
2a single mounting facility thread class 0.437" single mounting facility thread length 2.937" overall length tap, circular, bushing mount unef single mounting facility thread series
2a single mounting facility thread class 0.250" single mounting facility thread length 1.250" overall length snap or line unf single mounting facility thread series
2a single mounting facility thread class 0.292" single mounting facility thread length 1.855" overall length tap, circular, bushing mount unef single mounting facility thread series
2a single mounting facility thread class 0.437" single mounting facility thread length 2.937" overall length tap, circular, bushing mount unef single mounting facility thread series
Used on aircraft, orion p-3; aircraft, tomcat f-14. 2a thread class right-hand 0.900" overall length 20 thread quantity per inch weapon system essential un thread series