Imperial tubing

Tube O.D

UN thread

Part
Number

a

W

inch

inch

mm

inch

( inch)

1/16

10-32UNF

Ow-1BP1

0.31

7.9

5/16

1/8

5/16-20UN

Ow-2BP2

0.47

11.9

7/16

3/16

3/8-20UN

Ow-3BP3

0.47

11.9

1/2

1/4

7/16-20UNF

Ow-4BP4

0.50

12.7

9/16

5/16

1/2-20UNF

Ow-5BP5

0.53

13.5

5/8

3/8

9/16-20UN

Ow-6BP6

0.56

14.2

11/16

1/2

3/4-20UNEF

Ow-8BP8

0.69

17.5

7/8

5/8

7/8-20UNEF

Ow-10BP10

0.69

17.5

1

3/4

1-20UNEF

Ow-12BP12

0.69

17.5

1.1/8

7/8

1.1/8-20UN

Ow-14BP12

0.69

17.5

1.1/4

1

1.5/16-20UN

Ow-16BP16

0.81

20.6

1.1/2

Metric Tubing

Tube O.D

UN
thread

Part
Number

a

W

mm

mm

( inch)

3

5/16-20UN

Ow-3MBP

11.9

12

4

3/8-20UN

Ow-4MBP

11.9

12

6

7/16-20UNF

Ow-6MBP

12.7

14

8

1/2-20UNF

Ow-8MBP

13.5

16

10

5/8-20UN

Ow-10MBP

15.1

19

12

3/4-20UNEF

Ow-12MBP

17.5

22

16

7/8-20UNEF

Ow-16MBP

17.5

25

18

1-20UNEF

Ow-18MBP

17.5

30

20

1.1/16-20UN

Ow-20MBP

17.5

32

25

1.5/16-20UN

Ow-25MBP

20.6

38