3b single pressure connection thread class 0.438" single connection inside diameter 0.438" single pressure connection thread length 3.812" overall length 20 single pressure connection thread quantity per inch cylindrical unf single pressure connection thread series
2a single mounting facility thread class 0.250" single mounting facility thread length 1.563" overall length 0.938" overall width 32 single mounting facility thread quantity per inch circular wafer, bushing mount un single mounting facility thread series
0.453" single mounting facility thread length 2.625" overall length 24 single mounting facility thread quantity per inch circular wafer, bushing mount uns single mounting facility thread series
2a thread class right-hand 1.099" overall length 1.125" overall width critical spare parts for T56 aircraft engine listed on T56 engine critical parts list unef thread series