2a single mounting facility thread class 0.312" single mounting facility thread length 1.915" overall length tap, circular, bushing mount unef single mounting facility thread series
Used on aircraft, tomcat f-14. 3a single pressure connection thread class 0.479" single pressure connection thread length 1.125" overall length 0.375" single connection outside diameter 24 single pressure connection thread quantity per inch cylindrical unf single pressure connection thread series