Nominal size str

1"

1-1/2"

1-1/4"

1-1/8"

1-3/4"

1-5/16"

1-5/8"

1-7/8"

1/2"

1/4"

11/16"

13/16"

15/16"

2-1/2"

2-1/4"

2-3/4"

3"

3-1/2"

3/4"

3/8"

4"

5/16"

5/8"

7/16"

7/8"

9/16"

9/32"