Metric tubing 

Tube O.D
mm

NPT thread

Part Number

A

C

D

R

W

Min bore

mm

mm

mm

mm

inch

mm

3

1/8

Ow-3MM1/8N

29.7

15.3

23.1

9.5

7/16

2.4

3

1/4

Ow-3MMC1/4N

35.3

15.3

28.7

14.3

9/16

2.4

4

1/8

Ow-4MMC1/8N

30.4

16.1

23.8

9.5

7/16

3.0

4

1/4

Ow-4MMC1/4N

36.0

16.1

29.4

14.3

9/16

3.0

6

1/8

Ow-6MMC1/8N

32.9

17.7

25.4

9.5

1/2

3.2

6

1/4

Ow-6MMC1/4N

37.7

17.7

30.2

14.3

9/16

4.8

6

3/8

Ow-6MMC3/8N

38.5

17.7

31.0

14.3

11/16

4.8

6

1/2

Ow-6MMC1/2N

44.0

17.7

36.5

19.1

7/8

4.8

8

1/8

Ow-8MMC1/8N

34.2

18.6

26.7

9.5

9/16

4.8

8

1/4

Ow-8MMC1/4N

38.7

18.6

31.2

14.3

9/16

6.4

8

3/8

Ow-8MMC3/8N

39.3

18.6

31.8

14.3

11/16

6.4

8

1/2

Ow-8MMC1/2N

44.8

18.6

37.3

19.1

7/8

6.4

10

1/4

Ow-10MMC1/4N

40.9

19.5

33.3

14.3

11/16

7.1

10

3/8

Ow-10MMC3/8N

40.9

19.5

33.3

14.3

11/16

7.9

10

1/2

Ow-10MMC1/2N

45.7

19.5

38.1

19.1

7/8

7.9

12

1/4

Ow-12MMC1/4N

43.4

22.0

33.3

14.3

13/16

7.1

12

3/8

Ow-12MMC3/8N

43.4

22.0

33.3

14.3

13/16

9.5

12

1/2

Ow-12MMC1/2N

48.2

22.0

38.1

19.1

7/8

9.5

12

3/4

Ow-12MMC3/4N

49.0

22.0

38.9

19.1

1.1/16

9.5

16

3/8

Ow-16MMC3/8N

44.2

22.0

34.1

14.3

15/16

10.3

16

1/2

Ow-16MMC1/2N

49.0

22.0

38.9

19.1

15/16

12.7

16

3/4

Ow-16MMC3/4N

49.0

22.0

38.9

19.1

1.1/16

12.7

18

1/2

Ow-18MMC1/2N

50.6

22.0

40.5

19.1

1.1/16

12.7

18

3/4

Ow-18MMC3/4N

50.6

22.0

40.5

19.1

1.1/16

15.1

20

1/2

Ow-20MMC1/2N

50.6

22.0

42.2

19.1

1.3/16

12.7

20

3/4

Ow-20MMC3/4N

52.3

22.0

42.2

19.1

1.3/16

15.9

25

3/4

Ow-25MMC3/4N

57.5

26.5

45.2

19.1

1.3/8

18.3

25

1

Ow-25MMC1N

62.3

26.5

50.0

23.8

1.3/8

22.2