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Superlok NPT Fittings

Superlok i – fittings are the safest valve and fittings products in the instrumentation and control markets. We are so confident in the Superlok Zero Leak Technology, that we back all i – fitting products with a lifetime guarantee against leaks or failures.

Superlok i-Fitting – Built in Gap Gauge in Every Fitting Instrumntation Valves, Tube Fittings & Pipe Fittings.

Superlok i-Fitting Tube fittings and valves | JIC Fittings | Ultra-High-Purity Fittings | DIN Fittings | Tubes | Coil | Flexible tube | Manifolds | High Pressure

ICN - Close Nipple
IHN - Hex Nipple
IHLN - Hex Long Nipple
IHRN - Hex Reducing Nipple
IA - Adapter
IRA - Reducing Adapter
IRHB - Reducing Hex Bushing
IHC - Hex Coupling
IHRC - Hex Reducing Coupling
IPG - ISO Parallel Gasket
IPP - Pipe Plug
IPC - Pipe Cap
Male NPT Threads

Part Number

NPT Pipe Size

Dimension (mm)

A

E

ICN - 2N

1/8

19.1

4.8

ICN - 4N

1/4

28.4

7.1

ICN - 6N

3/8

28.4

9.6

ICN - 8N

1/2

38.1

11.9

ICN - 12N

3/4

38.1

15.7

ICN - 16N

1

47.8

22.4

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Male NPT Threads

Part Number

NPT Pipe Size

Dimension (mm)

T* ISO/BSP Pipe Size A (ISO 7/1)

A

E

H

IHN - 2N

1/8

25.6

4.8

11.1

1/8

IHN - 4N

1/4

35.6

7.1

14.2

1/4

IHN - 6N

3/8

36.3

9.6

17.4

3/8

IHN - 8N

1/2

46.7

11.9

22.2

1/2

IHN - 12N

3/4

46.7

15.7

26.9

3/4

IHN - 16N

1

58.9

22.4

34.9

1

NOTE : In case of ISO/BSP(ISO 7/1) tapered pipe thread of T*, The part number should be “NR” instead of “N”
Example : IHN-8NR (ISO TATER THREAD)

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Male NPT to Male ISO Parallel Pipe Threads

Part Number

NPT Pipe Size

ISO/BSP Pipe Size (ISO 228)

Dimension (mm)

A

B

C

D

E

IHN - 2NG

1/8

1/8

27.7

7.1

13.7

4.1

14.2

IHN - 4NG

1/4

1/4

36.8

11.2

18.0

5.8

19.1

IHN - 6NG

3/8

3/8

37.6

11.2

21.6

7.9

22.2

IHN - 8NG

1/2

1/2

44.4

14.2

25.9

11.9

26.9

IHN - 12NG

3/4

3/4

49.0

15.7

32.0

15.7

33.3

IHN - 16NG

1

1

56.6

18.3

38.9

19.8

41.2

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Male NPT Threads

Part Number

NPT Pipe Size

Dimension (mm)

A

E

H

IHLN - 2N

1/8

*

4.8

11.1

IHLN - 4N

1/4

*

7.1

14.2

IHLN - 6N

3/8

*

9.6

17.4

IHLN - 8N

1/2

*

11.9

22.2

IHLN - 12N

3/4

*

15.7

26.9

IHLN - 16N

1

*

22.4

34.9

NOTE : The length of Nipple “A” is defined by user
Part Number Example : IHLN - 8N - 100L(length “A” : 100mm)

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Male NPT Threads

Part Number

NPT Pipe Size

Reduced Pipe Size

Dimension (mm)

A

E

H

IHRN 2 - 1N

1/8

1/16

25.6

3.0

11.1

IHRN 4 - 2N

1/4

1/8

31.0

4.8

14.2

IHRN 6 - 2N

3/8

1/8

31.8

4.8

17.4

IHRN 6 - 4N

3/8

1/4

36.3

7.1

17.4

IHRN 8 - 2N

1/2

1/8

37.3

4.8

22.2

IHRN 8 - 4N

1/2

1/4

41.9

7.1

22.2

IHRN 8 - 6N

1/2

3/8

41.9

9.6

22.2

IHRN12 - 4N

3/4

1/4

41.9

7.1

26.9

IHRN12 - 8N

3/4

1/2

46.7

11.9

26.9

IHRN16 - 4N

1

1/4

49.3

7.1

34.9

IHRN16 - 8N

1

1/2

54.1

11.9

34.9

IHRN16 -12N

1

3/4

54.1

15.7

34.9

NOTE : The length of Nipple “A” is defined by user
Part Number Example : IHLN - 8N - 100L(length “A” : 100mm)

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Female to Male NPT Threads

Part Number

NPT Pipe Size

Dimension (mm)

T* ISO/BSP Pipe Size A (ISO 7/1)

A

E

H

IA - 2N

1/8

27.9

4.8

14.2

1/8

IA - 4N

1/4

35.6

7.1

19.1

1/4

IA - 6N

3/8

38.4

9.6

22.2

3/8

IA - 8N

1/2

49.3

11.9

26.9

1/2

IA - 12N

3/4

51.3

15.7

33.3

3/4

IA - 16N

1

57.9

22.4

41.2

1

NOTE : In case of ISO/BSP(ISO 7/1) tapered pipe thread of T* The part number should be “NR” instead of “N”
Example : IA-8NR (ISO TATER THREAD)

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Female NPT to Male ISO Parallel Pipe Threads

Part Number

NPT Pipe Size

T* ISO/BSP Pipe Size A (ISO 7/1)

Dimension (mm)

A

B

C

E

H

IA - 2NG

1/8

1/8

25.1

7.1

13.7

4.1

14.2

IA - 4NG

1/4

1/4

33.5

11.2

18.0

5.8

19.1

IA - 6NG

3/8

3/8

35.8

11.2

21.6

7.9

22.2

IA - 8NG

1/2

1/2

44.2

14.2

25.9

11.9

IA - 12NG

3/4

3/4

48.0

15.7

32.0

15.7

33.3

IA - 16NG

1

1

53.3

18.3

38.9

19.8

41.2

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Female to Male NPT Threads

Part Number

Male Pipe Size

Female Pipe Size

Dimension (mm)

A

E

H

IRA 2 - 4N

1/8

1/4

32.0

4.8

19.1

IRA 2 - 6N

1/8

3/8

33.8

4.8

22.2

IRA 4 - 6N

1/4

3/8

38.1

7.1

22.2

IRA 2 - 8N

1/8

1/2

40.1

4.8

26.9

IRA 4 - 8N

1/4

1/2

44.7

7.1

26.9

IRA 6 - 8N

3/8

1/2

44.4

9.6

26.9

IRA 4 -12N

1/4

3/4

47.0

7.1

33.3

IRA 6 -12N

3/8

3/4

46.2

9.6

33.3

IRA 8 -12N

1/2

3/4

51.3

11.9

33.3

IRA 4 -16N

1/4

1

49.8

7.1

41.2

IRA 8 -16N

1/2

1

54.9

11.9

41.2

IRA12 -16N

3/4

1

55.1

15.7

41.2

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Female to Male NPT Threads

Part Number

Male Pipe Size

Female Pipe Size

Dimension (mm)

A

E

H

IRHB 4 - 2N

1/4

1/8

26.9

7.1

14.2

IRHB 6 - 2N

3/8

1/8

21.8

8.6

17.4

IRHB 6 - 4N

3/8

1/4

30.2

9.6

19.1

IRHB 8 - 2N

1/2

1/8

27.4

8.6

22.2

IRHB 8 - 4N

1/2

1/4

27.4

11.4

22.2

IRHB 8 - 6N

1/2

3/8

35.8

11.9

22.2

IRHB12 - 4N

3/4

1/4

27.4

11.4

26.9

IRHB12 - 6N

3/4

3/8

27.4

15.0

26.9

IRHB12 - 8N

3/4

1/2

41.4

15.7

26.9

IRHB16 - 4N

1

1/4

34.8

11.4

34.9

IRHB16 - 6N

1

3/8

34.8

15.0

34.9

IRHB16 - 8N

1

1/2

34.8

18.5

34.9

IRHB16 - 12N

1

3/4

47.0

22.4

34.9

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Female NPT Threads

Part Number

NPT Pipe Size

Dimension (mm)

A

E

H

IHC - 2N

1/8

20.6

8.6

14.2

IHC - 4N

1/4

30.2

11.4

19.1

IHC - 6N

3/8

33.3

15.0

22.2

IHC - 8N

1/2

39.6

18.5

26.9

IHC - 12N

3/4

41.1

23.9

33.3

IHC - 16N

1

50.8

29.7

41.2

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Female to Male NPT Threads

Part Number

Pipe Size

Reduced Pipe Size

Dimension (mm)

A

E

H

IHRC 4 - 2N

1/4

1/8

31.0

8.6

19.1

IHRC 6 - 4N

3/8

1/4

35.1

11.4

22.2

IHRC 8 - 2N

1/2

1/8

39.6

8.6

26.9

IHRC 8 - 4N

1/2

1/4

44.4

11.4

26.9

IHRC 8 - 6N

1/2

3/8

45.2

15.0

26.9

IHRC12 - 4N

3/4

1/4

46.0

11.4

33.3

IHRC12 - 8N

3/4

1/2

52.3

18.5

33.3

IHRC16 - 8N

1

1/2

55.6

18.5

41.2

IHRC16 -12N

1

3/4

57.2

23.9

41.2

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ISO Parallel Copper Gaskets

Part Number

Pipe Size

Dimension (mm)

E

H

T

IPG - 2

1/8

10.2

1.0

16.0

IPG - 4

1/4

13.4

1.5

19.5

IPG - 6

3/8

17.0

1.5

24.0

IPG - 8

1/2

21.2

1.5

29.0

IPG - 12

3/4

27.2

2.0

34.5

IPG - 16

1

34.0

2.0

42.0

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Female NPT Threads

Part Number

Pipe Size

Dimension (mm)

A

H

IPP - 2N

1/8

19.1

11.1

IPP - 4N

1/4

24.4

14.2

IPP - 6N

3/8

25.1

17.4

IPP - 8N

1/2

30.7

22.2

IPP - 12N

3/4

30.7

26.9

IPP - 16N

1

38.1

34.9

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Female NPT Threads

Part Number

Pipe Size

Dimension (mm)

A

H

IPC - 2N

1/8

19.1

14.2

IPC - 4N

1/4

23.1

19.1

IPC - 6N

3/8

26.2

22.2

IPC - 8N

1/2

34.0

26.9

IPC - 12N

3/4

36.6

33.3

IPC - 16N

1

41.1

41.2

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