3a all pressure connection thread class 3.530" overall length 3.540" overall width 16 all pressure connection thread quantity per inch cylindrical w/mounting lugs unf all pressure connection thread series
3b single mounting facility thread class 2.858" overall length 2.250" overall width 32 single mounting facility thread quantity per inch tap, square frame unf single mounting facility thread series
2a single mounting facility thread class 0.375" single mounting facility thread length 3.185" overall length 1.313" overall width circular wafer, bushing mount unef single mounting facility thread series
2b single pressure connection thread class 0.312" single connection inside diameter 1.500" overall length 1.500" overall width spring operated lever arm assembly rectangular unf single pressure connection thread series