Hex Reducing Nipple

Male NPT Thread x Male NPT Thread

Hex reducing nipples are used to connect two female NPT threaded ports of different sizes in instrumentation and process piping systems.

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Pipe Fitting Product

Short Product Description

Hex reducing nipples are used to connect two female NPT threaded ports of different sizes in instrumentation and process piping systems.

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Reducing Thread Connection

Connects two female NPT threaded ports of different sizes.

Hex Body Profile

Provides a serviceable hex profile for installation and maintenance.

Instrumentation Duty

Designed for clean routing and dependable installation in instrument and process piping systems.

Imperial Sizes

Hex Reducing Nipple Size Chart

Showing 28 of 28 sizes - 0 selected

Part No.	Thread (P) NPT	Thread (P) NPT2	A	E	F Hex
2HRN1N	1/8	1/16	1.01	0.12	7/16
4HRN1N	1/4	1/16	1.25	0.12	9/16
4HRN2N	1/4	1/8	1.22	0.19	9/16
6HRN1N	3/8	1/16	1.27	0.12	11/16
6HRN2N	3/8	1/8	1.25	0.19	23/32
6HRN4N	3/8	1/4	1.43	0.28	23/32
8HRN2N	1/2	1/8	1.47	0.19	7/8
8HRN4N	1/2	1/4	1.65	0.28	7/8
8HRN6N	1/2	3/8	1.65	0.38	7/8
12HRN4N	3/4	1/4	1.65	0.28	1-1/16
12HRN8N	3/4	1/2	1.84	0.47	1-1/16
12HRN2N	3/4	1/8	1.59	0.19	1-1/16
16HRN2N	1	1/8	1.78	0.19	1-3/8
16HRN4N	1	1/4	1.97	0.28	1-3/8
16HRN6N	1	3/8	1.97	0.38	1-3/8
16HRN8N	1	1/2	2.13	0.47	1-3/8
16HRN12N	1	3/4	2.13	0.62	1-3/8
20HRN8N	1-1/4	1/2	2.17	0.47	1-23/32
20HRN12N	1-1/4	3/4	2.17	0.62	1-23/32
20HRN16N	1-1/4	1	2.36	0.88	1-23/32
24HRN8N	1-1/2	1/2	2.36	0.47	1-31/32
24HRN12N	1-1/2	3/4	2.36	0.62	1-31/32
24HRN16N	1-1/2	1	2.56	0.88	1-31/32
24HRN20N	1-1/2	1-1/4	2.56	1.1	1-31/32
32HRN12N	2	3/4	2.44	0.62	2-7/16
32HRN16N	2	1	2.64	0.88	2-7/16
32HRN20N	2	1-1/4	2.64	1.1	2-7/16
32HRN24N	2	1-1/2	2.75	1.32	2-7/16

2HRN1N

Thread NPT 1/8, Thread NPT2 1/16

A: 1.01
E: 0.12
F Hex: 7/16

4HRN1N

Thread NPT 1/4, Thread NPT2 1/16

A: 1.25
E: 0.12
F Hex: 9/16

4HRN2N

Thread NPT 1/4, Thread NPT2 1/8

A: 1.22
E: 0.19
F Hex: 9/16

6HRN1N

Thread NPT 3/8, Thread NPT2 1/16

A: 1.27
E: 0.12
F Hex: 11/16

6HRN2N

Thread NPT 3/8, Thread NPT2 1/8

A: 1.25
E: 0.19
F Hex: 23/32

6HRN4N

Thread NPT 3/8, Thread NPT2 1/4

A: 1.43
E: 0.28
F Hex: 23/32

8HRN2N

Thread NPT 1/2, Thread NPT2 1/8

A: 1.47
E: 0.19
F Hex: 7/8

8HRN4N

Thread NPT 1/2, Thread NPT2 1/4

A: 1.65
E: 0.28
F Hex: 7/8

8HRN6N

Thread NPT 1/2, Thread NPT2 3/8

A: 1.65
E: 0.38
F Hex: 7/8

12HRN4N

Thread NPT 3/4, Thread NPT2 1/4

A: 1.65
E: 0.28
F Hex: 1-1/16

12HRN8N

Thread NPT 3/4, Thread NPT2 1/2

A: 1.84
E: 0.47
F Hex: 1-1/16

12HRN2N

Thread NPT 3/4, Thread NPT2 1/8

A: 1.59
E: 0.19
F Hex: 1-1/16

16HRN2N

Thread NPT 1, Thread NPT2 1/8

A: 1.78
E: 0.19
F Hex: 1-3/8

16HRN4N

Thread NPT 1, Thread NPT2 1/4

A: 1.97
E: 0.28
F Hex: 1-3/8

16HRN6N

Thread NPT 1, Thread NPT2 3/8

A: 1.97
E: 0.38
F Hex: 1-3/8

16HRN8N

Thread NPT 1, Thread NPT2 1/2

A: 2.13
E: 0.47
F Hex: 1-3/8

16HRN12N

Thread NPT 1, Thread NPT2 3/4

A: 2.13
E: 0.62
F Hex: 1-3/8

20HRN8N

Thread NPT 1-1/4, Thread NPT2 1/2

A: 2.17
E: 0.47
F Hex: 1-23/32

20HRN12N

Thread NPT 1-1/4, Thread NPT2 3/4

A: 2.17
E: 0.62
F Hex: 1-23/32

20HRN16N

Thread NPT 1-1/4, Thread NPT2 1

A: 2.36
E: 0.88
F Hex: 1-23/32

24HRN8N

Thread NPT 1-1/2, Thread NPT2 1/2

A: 2.36
E: 0.47
F Hex: 1-31/32

24HRN12N

Thread NPT 1-1/2, Thread NPT2 3/4

A: 2.36
E: 0.62
F Hex: 1-31/32

24HRN16N

Thread NPT 1-1/2, Thread NPT2 1

A: 2.56
E: 0.88
F Hex: 1-31/32

24HRN20N

Thread NPT 1-1/2, Thread NPT2 1-1/4

A: 2.56
E: 1.1
F Hex: 1-31/32

32HRN12N

Thread NPT 2, Thread NPT2 3/4

A: 2.44
E: 0.62
F Hex: 2-7/16

32HRN16N

Thread NPT 2, Thread NPT2 1

A: 2.64
E: 0.88
F Hex: 2-7/16

32HRN20N

Thread NPT 2, Thread NPT2 1-1/4

A: 2.64
E: 1.1
F Hex: 2-7/16

32HRN24N

Thread NPT 2, Thread NPT2 1-1/2

A: 2.75
E: 1.32
F Hex: 2-7/16

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