Steel merchant coupling with American standard

size OD Length(mm) TYPE
1/8 0.563 3/4 NPSL
1/4 0.719 11/8 NPSL
3/8 0.875 11/8 NPSL
1/2 1.063 11/2 NPSL
3/4 1.313 19/16 NPSL
1 1.576 115/16 NPSL
11/4 1.900 2 NPSL
11/2 2.200 2 NPSL
2 2.750 21/16 NPSL
21/2 3.250 31/16 NPT
3 4.000 33/16 NPT
31/2 4.625 35/16 NPT
4 5.000 37/16 NPT
5 6.296 311/16 NPT
6 7.390 315/16 NPT