METRIC TO NPT

Product ID

D1

D2 (NPT)

D3

H

L1

L2

L3

L4

mm

inch

mm

mm

mm

mm

mm

mm

FE_6 x NPT-1/8

6

1/8

4.8

12.7

19.6

27.0

19.0

15.3

FE_6 x NPT-1/4

6

1/4

4.8

17.5

22.4

29.8

22.4

15.3

FE_6 x NPT-1/2

6

1/2

4.8

27.0

27.2

34.6

28.4

15.3

FE_8 x NPT-1/4

8

1/4

6.4

17.5

23.1

30.6

22.4

16.2

FE_10 x NPT-1/8

10

1/8

7.9

17.5

23.9

31.5

19.0

17.2

FE_10 x NPT-1/4

10

1/4

7.9

20.6

25.9

33.5

22.4

17.2

FE_12 x NPT-1/4

12

1/4

9.5

20.6

25.9

36.0

22.4

22.8

FE_12 x NPT-1/2

12

1/2

9.5

27.0

28.7

38.8

28.4

22.8

FE_16 x NPT-1/2

16

1/2

12.7

27.0

29.7

39.8

28.4

24.4

IMPERIAL TO NPT

Product ID

D1

D2 (NPT)

D3

H

L1

L2

L3

L4

inch

inch

inch

inch

inch

inch

inch

inch

FE_1/8 x NPT-1/8

1/8

1/8

.09

1/2

.71

.97

.75

.50

FE_1/8 x NPT-1/4

1/8

1/4

.09

11/16

.82

1.08

.88

.50

FE_3/16 x NPT-1/8

3/16

1/8

.12

1/2

.74

1.00

.75

.54

FE_1/4 x NPT-1/8

1/4

1/8

.19

1/2

.77

1.06

.75

.60

FE_1/4 x NPT-1/4

1/4

1/4

.19

11/16

.88

1.17

.88

.60

FE_1/4 x NPT-3/8

1/4

3/8

.19

15/16

.96

1.25

.88

.60

FE_1/4 x NPT-1/2

1/4

1/2

.19

1 1/16

1.07

1.36

1.12

.60

FE_5/16 x NPT-1/8

5/16

1/8

.25

9/16

.84

1.13

.75

.64

FE_5/16 x NPT-1/4

5/16

1/4

.25

11/16

.91

1.20

.88

.64

FE_3/8 x NPT-1/8

3/8

1/8

.28

5/8

.91

1.20

.75

.66

FE_3/8 x NPT-1/4

3/8

1/4

.28

11/16

0.94

1.23

.88

.66

FE_3/8 x NPT-3/8

3/8

3/8

.28

15/16

1.02

1.31

.88

.66

FE_3/8 x NPT-1/2

3/8

1/2

.28

1 1/16

1.13

1.42

1.12

.66

FE_1/2 x NPT-1/4

1/2

1/4

.41

13/16

1.02

1.42

.88

.90

FE_1/2 x NPT-3/8

1/2

3/8

.41

15/16

1.02

1.42

.88

.90

FE_1/2 x NPT-1/2

1/2

1/2

.41

1 1/16

1.13

1.53

1.12

.90

FE_5/8 x NPT-3/8

5/8

3/8

.50

15/16

1.10

1.50

.88

.96

FE_5/8 x NPT-1/2

5/8

1/2

.50

1 1/16

1.17

1.57

1.12

.96

FE_3/4 x NPT-1/2

3/4

1/2

.62

1 1/16

1.17

1.57

1.12

.96

FE_3/4 x NPT-3/4

3/4

3/4

.62

1 3/8

1.36

1.76

1.25

.96

FE_7/8 x NPT-3/4

7/8

3/4

.72

1 3/8

1.36

1.76

1.25

1.02

FE_1 x NPT-3/4

1

3/4

.88

1 3/8

1.45

1.93

1.25

1.23

FE_1 x NPT-1

1

1

.88

1 11/16

1.63

2.11

1.50

1.23