Imperial tubing

Tube O.D
(inch)

NPT
thread

Part
Number

a

C

D

L

W(inch)

B'head hole drill 
size( inch)

Max b'head
thichness
(inch)

Min bore

(inch)

(mm)

inch

mm

inch

mm

inch

mm

inch

mm

1/8

1/8

Ow-2FBC2N

1.75

44.5

1.22

31.0

1.50

38.1

0.97

24.6

9/16

21/64

0.50

0.09

2.3

3/16

1/8

Ow-3FBC2N

1.78

45.2

1.25

31.8

1.53

38.9

1.00

25.4

9/16

25/64

0.50

0.13

3.3

1/4

1/8

Ow-4FBC2N

1.86

47.2

1.33

33.8

1.56

39.6

1.03

26.2

5/8

29/64

0.40

0.19

4.8

1/4

1/4

Ow-4FBC4N

2.05

52.1

1.33

33.8

1.75

44.5

1.03

26.2

3/4

29/64

0.40

0.19

4.8

5/16

1/8

Ow-5FBC2N

1.95

49.5

1.41

35.8

1.66

42.2

1.12

28.5

11/16

33/64

0.44

0.25

6.4

5/16

1/2

Ow-5FBC8N

2.38

60.5

1.41

35.8

2.09

53.7

1.12

28.5

1.1/16

33/64

0.44

0.25

6.4

3/8

1/4

Ow-8FBC4N

2.17

55.1

1.45

36.8

1.88

47.8

1.16

29.5

3/4

37/64

0.44

0.28

7.1

1/2

3/8

Ow-8FBC6N

2.41

61.2

1.63

41.4

2.03

51.6

1.25

31.8

7/8

49/64

0.50

0.41

10

1/2

1/2

Ow-8FBC8N

2.60

66.0

1.63

41.4

2.22

56.4

1.25

31.8

1.1/16

49/64

0.50

0.41

10

3/4

3/4

Ow-12FBC12N

2.88

73.2

1.85

47.0

2.50

63.5

1.47

37.3

1.3/8

1.1/64

0.66

0.63

16

7/8

3/4

Ow-14FBC12N

3.16

80.3

2.07

52.6

2.78

70.6

1.69

42.9

1.3/8

1.9/64

0.75

0.75

19

1

1

Ow-16FBC16N

3.66

93.0

2.25

57.2

3.19

81.0

1.78

45.2

1.5/8

1.2/64

0.75

0.88

22

Metric tubing 

Tube O.D
(mm)

NPT
thread

Part Number

a

C

D

L

W
(inch)

B'head hole
drill size
(mm)

Max b'head
thichness (mm)

Min bore
(mm)

mm

mm

mm

mm

6

1/8

Ow-6MFBC1/8N

47.2

33.7

39.7

26.2

5/8

11.5

10.2

4.8

6

1/4

Ow-6MFBC1/4N

52.0

33.7

44.5

26.2

3/4

11.5

10.2

4.8

8

1/8

Ow-8MFBC1/8N

49.6

36.1

42.1

28.5

11/16

13.1

11.2

6.4

10

1/4

Ow-10MFBC1/4N

55.2

37.0

47.6

29.4

13/16

16.3

11.2

7.9

12

3/8

Ow-12MFBC3/8N

60.9

41.9

50.8

31.8

15/16

19.5

12.7

9.5

12

1/2

Ow-12MFBC1/2N

66.4

41.9

56.3

31.8

1.1/16

19.5

12.7

9.5