2a single mounting facility thread class 1.180" overall length 0.930" overall width 48 single mounting facility thread quantity per inch unc single mounting facility thread series
3a single pressure connection thread class 3.312" overall length 0.438" single connection outside diameter 20 single pressure connection thread quantity per inch cylindrical unf single pressure connection thread series
2a single mounting facility thread class 2.340" overall length 32 single mounting facility thread quantity per inch unef single mounting facility thread series
3a single pressure connection thread class 0.290" all threaded hole thread length 2.830" overall length 0.438" single connection outside diameter 20 single pressure connection thread quantity per inch cylindrical unc all threaded hole thread series