Used on radar and communications signal simulator station an/ssq-74. 0.250" single connection inside diameter 3.188" overall length 1.562" overall width 18 single pressure connection thread quantity per inch rectangular w/bracket npt single pressure connection 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