3a single threaded bushing thread class 0.380" single threaded bushing thread length 3.530" overall length 20 single threaded bushing thread quantity per inch cylindrical w/flange unf single threaded bushing thread series
3a single pressure connection thread class 0.550" single pressure connection thread length 2.770" overall length 0.438" single connection outside diameter cylindrical unjf single pressure connection thread series
2b single pressure connection thread class 0.250" single pressure connection thread length 5.188" overall length 2.812" overall width 20 single pressure connection thread quantity per inch 30.00 in. of mercury to 20.000 lb. per square in. gage adjustment range rectangular unf single pressure connection thread series