2a single mounting facility thread class 0.437" single mounting facility thread length 2.567" overall length tap, circular, bushing mount unef single mounting facility thread series
2b all threaded hole thread class 0.125" all connections inside diameter 3.062" overall length 3.125" overall width cylindrical unf all threaded hole thread series
2b single pressure connection thread class 0.438" single connection inside diameter 4.875" overall length 2.875" overall width 20 single pressure connection thread quantity per inch rectangular w/bracket unef single pressure connection thread series