One piece ORFS male

DN(inch)           THREAD(inch)

1/4                   9/16-18

3/8                   11/16-16

1/2                   13/16-16

5/8                   1-14

3/4                   1 3/16-12

1                      1 7/16-12

1 1/4                1 11/16-12

1 1/2               2-12