2a 1st end thread class 18 1st end thread quantity per inch supports harnischfeger corp.; model M320T2, crane truck mounted, nsn 3810-00-151-4431 npt 2nd end thread series
2a 1st end thread class 24 1st end thread quantity per inch supports harnischfeger corp.; model M320T2, crane truck mounted, nsn 3810-00-151-4431 npt 2nd end thread series