NPT Thread Adapter

NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
NPT Thread Adapter
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As one of the country’s leading experts in NPT fittings and adapters, Longye owns and operates a complete range of machining and testing equipment to produce quality NPT thread adapters that meet customers’ evolving expectations. We can complete customer orders based on customer-supplied design drawings. Longye NPT thread adapter is widely used in shipbuilding, railway, metallurgy, chemical engineering, gauges, military, aerospace and machinery industries, providing an affordable alternative to name-brand products.

Model Selection

5JN9

5JN9-BH 90°JIC Male Bulkhead/NPT Female

Technical Specifications
Part No. Thread Dimensions
E F A B S1
5JN9-04BH 7/16"X20 Z1/4 W X18 44 22.4 19
6JN9-06-04BH 9/16-X18 Z1/4 W X18 47 22.4 19
5JN9-06BH 9/16"X18 Z3/8"X18 49.5 25.9 24
5JN9-08-06BH 3/4"X16 Z3/8"X18 54 25.9 24
5JN9-08BH 3/4 H X16 Z1/2"X14 57.5 31.2 30
5JN9-10-06BH 7/8"X14 Z3/8"X18 60.5 27.5 30
5JN9-10-08BH 7/8 w X14 Z1/2"X14 60.5 31.2 30
5JN9-12-08BH 1.1/16"X12 Z1/2"X14 65.5 31.2 30
5JN9-12BH 1.1/16"X12 Z3/4"X14 67.8 34.5 33
5JN9-16-12BH 1.5/16"X12 Z3/4"X14 70 34.5 33
6JN9-16BH 1.5/16"X12 Z1 H X11.5 71.5 41.1 41
5JN9-20-16BH 1.5/8"X12 Z1-X11.5 76.5 42.5 48
5JN9-20BH 1.5/8"X12 Z1.1/4-X11.5 76.5 43.2 48
Nut and sleeve are ordered separately. NB200 nut and NB500 sleeve are suitable for metric-size tubes, whereas NB200 nut and NB300 sleeve are recommended for inch-size tubes.
5JN

5JN-BH JIC Male Bulkhead/NPT Female

Technical Specifications
Part No. Thread Dimensions
E F A L S1
5JN-04-02BH 7/16"X20 Z1/8"X27 32.5 48.5 17
5JN-04BH 7/16"X20 Z1/4"X18 32.5 54 19
5JN-06-04BH 9/16"X18 Z1/4"X18 32.5 54 19
5JN-08-06BH 3/4"X16 Z3/8 W X18 36.5 59.5 22
5JN-10-08BH 7/8"X14 Z1/2"X14 40 68.5 30
5JN-10-12BH 7/8"X14 Z3/4"X14 40 70.5 32
5JN-12-06BH 1.1/16"X12 Z3/8"X18 44.5 68.5 36
5JN-12-08BH 1.1/16-X12 Z1/2"X14 44.5 75 36
5JN-12BH 1.1/16"X12 Z3/4"X14 44.5 75 36
5JN-14-12BH 1.3/16"X12 Z3/4"X14 44.5 75 41
5JN-16-12BH 1.5/16"X12 Z3/4"X14 44.5 71.5 41
5JN-16BH 1.5/16"X12 Z1"X11.5 44.5 81 41
5JN-20BH 1.5/8"X12 Z1.1/4"X11.5 45.7 83 50
5JN-24BH 1.7/8"X12 Z1.1/2"X11.5 46 83.5 55
6NJ

6NJ NPT/JIC Male 74°Cone Bulkhead

Technical Specifications
Part No. Thread Dimensions
E F A B L S1 S2
6NJ-02-04 Z1/8"X27 7/16"X20 10.5 32.5 49 17 17
6NJ-04 Z1/4 H X18 7/16"X20 15 32.5 53.5 17 17
6NJ-04-06 Z1/4"X18 9/16"X18 15 32.5 53.5 22 22
6NJ-06 Z3/8"X18 9/16 B X18 16 32.5 56.5 22 22
6NJ-08 Z1/2"X14 3/4"X16 19.5 36.5 64 24 24
6NJ-08-10 Z1/2"X14 7/8"X14 19.5 40 69.5 30 30
6NJ-12 Z3/4"X14 1.1/16"X12 19.5 44.5 75 36 36
6NJ-16 Z1"X11.5 1.5/16"X12 25.5 44.5 83 41 41
6NJ-20 Z1.1/4"X11.5 1.5/8"X12 26.5 45.7 87 50 50
6NJ-24 Z1.1/2 W X11.5 1.7/8"X12 27.5 46 88.5 55 55
Note
Add "LN" after our part no ., for example 6J-12LN, if you need to order locking nuts from us. Nut and sleeve are ordered separately. NB200 nut and NB500 sleeve are suitable for metric-size tubes, whereas NB200 nut and NB300 sleeve are recommended for inch-size tubes.
7NJ9-S

7NJ9-S 90°NPT Female/JIC Female 74°

Technical Specifications
Part No. Thread Dimensions
E F A B S1 S2
7NJ9-04S Z1/4"X18 7/16"X20 22.5 9 19 15
7NJ9-04-06S Z1/4"X18 9/16"X18 22.5 10.5 19 19
7NJ9-06-04S Z3/8 M X18 7/16"X20 27 9 24 15
7NJ9-06S Z3/8"X18 9/16"X18 27 10.5 24 19
7NJ9-06-08S Z3/8"X18 3/4"X16 27 10.5 24 24
7NJ9-08-06S Z1/2"X14 9/16"X18 31.2 10.5 30 19
7NJ9-08S Z1/2"X14 3/4"X16 31.2 10.5 30 24
7NJ9-08-10S Z1/2"X14 7/8"X14 31.2 12 30 27
7NJ9-12S Z3/4"X14 1.1/16"X12 34.5 15 33 32
7NJ9-12-16S Z3/4"X14 1.5/16"X12 34.5 16 33 41
7NJ9-16-12S zrxn.5 1.1/16"X12 43 15 41 32
7NJ9-16S Z1"X11.5 1.5/16"X12 43 16 41 41
7NJ9-20S Z1.1/4"X11.5 1.5/8"X12 43.2 17 50 50
7NJ9-24S Z1.1/2"X11.5 1.7/8"X12 52.8 20 63 60
HNNJ

HNNJ NPT Female/NPT Female/JIC Male

Technical Specifications
Part No. Thread Dimensions
E F G A B C S1
HNNJ-04 Z1/4"X18 Z1/4"X18 7/16"X20 22.4 22.4 29.5 19
HNNJ-04-04-05 Z1/4"X18 Z1/4"X18 1/2"X20 22.4 22.4 29.5 19
HNNJ-0‘04-06 Z1/4"X18 Z1/4"X18 9/16"X18 22.4 22.4 31.2 19
HNNJ-06 Z3/8"X18 Z3/8"X18 9/16"X18 25.9 25.9 33.5 24
HNNJ-06-06-08 Z3/8"X18 Z3/8"X18 3/4"X16 25.9 25.9 36 24
HNNJ-08 Z1/2"X14 Z1/2"X14 3/4"X16 31.2 31.2 39.5 30
HNNJ-08-08-10 Z1/2"X14 Z1/2"X14 7/8"X14 31.2 31.2 42.5 30
HNNJ-12 Z3/4"X14 Z3/4"X14 1.1/16"X12 34.5 34.5 48 33
HNNJ-16 Z1 W X11.5 Z1"X11.5 1.5/16"X12 41.1 41.1 55.1 41
Nut and sleeve are ordered separately. NB200 nut and NB500 sleeve are suitable for metric-size tubes, whereas NB200 nut and NB300 sleeve are recommended for inch-size tubes.
LJJN

LJJN JIC Male/JIC Male/NPT Female

Technical Specifications
Part No. Thread Dimensions
E F G A B C S1
LJJN-04 7/16"X20 7/16"X20 Z1/4"X18 30.9 30.9 25.1 19
LJJN-04-04-02 7/16_X20 7/16"X20 Z1/8"X27 27.5 27.5 16.8 16
LJJN-05-05-02 1/2 W X20 1/2"X20 Z1/8"X27 27.5 27.5 16.8 16
LJJN-05-05-04 1/2"X20 1/2"X20 Z1/4 H X18 30.9 30.9 22.4 19
LJJN-06 9/16"X18 9/16 H X18 Z3/8"X18 33.5 33.5 26.8 24
LJJN-06-06-04 9/16 M X18 9/16"X18 Z1/4"X18 30 30 22.5 19
LJJN-08 3/4-X16 3/4"X16 Z1/2"X14 39.5 39.5 33 30
LJJN-08-08-06 3/4"X16 3/4"X16 Z3/8"X18 36 36 25.9 24
LJJN-10-10-08 7/8_X14 7/8"X14 Z1/2"X14 42.5 42.5 31.2 30
LJJN-12 1.1/16"X12 1.1/16"X12 Z3/4"X14 48 48 39 33
LJJN-14-14-12 1.3/16"X12 1.3/16"X12 Z3/4"X14 48.5 48.5 34.5 33
LJJN-16 1.5/16"X12 1.5/16"X12 zrxn.5 55.1 55.1 43.9 41
LJJN-20 1.5/8"X12 1.5/8"X12 Z1.1/4"X11.5 59.2 59.2 43.3 48
LJJN-24 1.7/8"X12 1.7/8 W X12 Z1.1/2"X11.5 73.4 73.4 52.8 63
LJNN

LJNN JIC Male/NPT Male/NPT Female

Technical Specifications
Part No. Thread Dimensions
E F G A B C S1
LJNN-04 7/16"X20 Z1/4"X18 Z1/4"X18 29.5 28 22.4 19
LJNN-04-02-02 7/16"X20 Z1/8"X27 Z1/8 W X27 27.5 24.5 16.8 16
LJNN-06 9/16"X18 Z3/8"X18 Z3/8"X18 33.5 33.5 25.9 24
LJNN-06-04-04 9/16 w X18 Z1/4"X18 Z1/4"X18 31.2 28 22.4 19
LJNN-08 3/4"X16 Z1/2"X14 Z1/2"X14 39.5 41.2 31.2 30
LJNN-08-06-06 3/4"X16 Z3/8"X18 Z3/8"X18 36 33.5 25.9 24
LJNN-10-08-08 7/8"X14 Z1/2"X14 Z1/2 W X14 42.5 41.2 31.2 30
LJNN-12 1.1/16"X12 Z3/4"X14 Z3/4"X14 48 45.2 34.5 33
LJNN-14-12-12 1.3/16"X12 Z3/4"X14 Z3/4"X14 48.5 45.2 34.5 33
LJNN-16 1.5/16"X12 zrxn.5 zrxn.5 55.1 54.5 41.1 41
Nut and sleeve are ordered separately. NB200 nut and NB500 sleeve are suitable for metric-size tubes, whereas NB200 nut and NB300 sleeve are recommended for inch-size tubes.
1FN

1FN ORFS Male O-Ring /NPT Male

Technical Specifications
Part No. Thread O-Ring Dimensions
E F E A B L S1
1FN-04-02 9/16"X18 Z1/8"X27 11 9.8 10.5 26.5 17
1FN-04 9/16"X18 Z1/4"X18 11 9.8 15 30.5 17
1FN-04-06 9/16"X18 Z3/8"X18 11 9.8 16 30.5 19
1FN-06-04 11/16"X16 Z1/4"X18 12 11.2 15 32 19
1FN-06 11/16 W X16 Z3/8"X18 12 11.2 16 33.5 19
1FN-06-08 11/16"X16 Z1/2"X14 12 11.2 19.5 39 24
1FN-08-04 13/16"X16 Z1/4"X18 14 12.8 15 36 22
1FN-08-06 13/16 W X16 Z3/8"X18 14 12.8 16 36.5 22
1FN-08 13/16 W X16 Z1/2"X14 14 12.8 19.5 40 24
1FN-08-12 13/16"X16 Z3/4"X14 14 12.8 19.5 42.5 30
1FN-10-08 1" X14 Z1/2"X14 16 15.5 19.5 45 27
1FN-10-12 1 W X14 Z3/4"X14 16 15.5 19.5 45 30
1FN-12-08 1.3/16"X12 Z1/2"X14 18 17 19.5 46.5 32
1FN-12 1.3/16"X12 Z3/4 H X14 18 17 19.5 47 32
1FN-12-16 1.3/16"X12 Z1 W X11.5 18 17 25.5 53.5 36
1FN-16-12 1.7/16^X12 Z3/4"X14 21 17.5 19.5 48 38
1FN-16 1.7/16"X12 Z1 W X11.5 21 17.5 25.5 53.5 38
1FN-16-20 1.7/16 W X12 Z1.1/4 ff X11.5 21 17.5 26.5 57 46
1FN-20-16 1.11/16"X12 zrxn.5 25 17.5 25.5 56 46
1FN-20 1.11/16"X12 Z1.1/4 W X11.5 25 17.5 26.5 56.5 46
1FN-20-24 1.11/16"X12 Z1.1/2 W X11.5 25 17.5 27.5 60 50
1FN-24 2" X12 Z1.1/2 W X11.5 29 17.5 27.5 59.5 55
1FN4

1FN4 45° Elbow ORFS Male O-Ring I NPT Male

Technical Specifications
Part No. Thread O-Ring Dimensions
E F E A B S1
1FN4-04-02 9/16"X18 Z1/8"X27 11 18.3 18 14
1FN4-04 9/16"X18 Z1/4"X18 11 18.3 21 14
1FN4-04-06 9/16"X18 Z3/8"X18 11 19.5 25 19
1FN4-06-04 11/16"X16 Z1/4"X18 12 20.5 22 19
1FN4-06 11/16"X16 Z3/8"X18 12 20.5 25 19
1FN4-06-08 11/16"X16 Z1/2"X14 12 22 29.5 22
1FN4-08-06 13/16"X16 Z3/8"X18 14 24 26 22
1FN4-08 13/16"X16 Z1/2"X14 14 24 29.5 22
1FN4-10-08 1"X14 Z1/2"X14 16 28 31 27
1FN4-12 1.3/16"X12 Z3/4 M X14 18 30.7 35.5 30
1FN4-16 1.7/16"X12 Z1"X11.5 21 33 40 36
1FN4-20 1.11/16"X12 Z1.1/4 H X11.5 25 35.5 42.5 41
1FN4-24 2"X12 Z1.1/2"X11.5 29 39 46.5 50
1FN9

1FN9 90° Elbow ORFS Male O-Ring / NPT Male

Technical Specifications
Part No. L Thread O-Ring Dimensions
E F E A B S1
1FN9-04-02 9/16X18 Z1/8"X27 11 23 24 14
1FN9-04 9/16X18 Z1/4"X18 11 23 25.5 14
1FN9-06-04 11/16"X16 Z1/4"X18 12 27 28.5 19
1FN9-06 11/16-X16 Z3/8"X18 12 27.5 31 19
1FN9-06-08 11/16"X16 Z1/2"X14 12 29 36.7 22
1FN9-08-06 13/16-X16 Z3/8"X18 14 31 33.5 22
1FN9-08 13/16"X16 Z1/2"X14 14 31 37.3 22
1FN9-08-12 13/16"X16 Z3/4 H X14 14 34.5 44 27
1FN9-10-08 1 W X14 Z1/2"X14 16 36.5 40 27
1FN9-10-12 1" X14 Z3/4 H X14 16 36.5 44 27
1FN9-12-08 1.3/16"X12 Z1/2"X14 18 40.3 41.5 30
1FN9-12 1.3/16"X12 Z3/4"X14 18 41 45.5 30
1FN9-12-16 1.3/16"X12 Z 1 "X 11.5 18 43 50 33
1FN9-16-12 1.7/16 "X 12 Z3/4 "X 14 21 44.5 49 36
1FN9-16 1.7/16 "X 12 Z1"X11.5 21 44.5 51.5 36
1FN9-20-16 1.11/16 H X12 Z 1 "X 11.5 25 47.5 54.5 41
1FN9-20 1.11/16"X12 Z1.1/4"X11.5 25 47.5 54.5 41
1FN9-24 2" X12 Z1.1/2 H X11.5 29 53.5 61 50
2NF

2NF NPT Male/ORFS Female

Technical Specifications
Part No. Thread Dimensions
E F A B L S1 S2
2NF-02-04 Z1/8"X27 9/16"X18 10.5 8.5 32 14 19
2NF-04 Z1/4"X18 9/16"X18 15 8.5 36.5 17 19
2NF-04-06 Z1/4"X18 11/16"X16 15 10 39.5 17 22
2NF-06 Z3/8"X18 11/16"X16 16 10 40.5 19 22
2NF-06-08 Z3/8"X18 13/16"X16 16 11 42.5 19 27
2NF-08 Z1/2"X14 13/16"X16 19.5 11 48 22 27
2NF-08-10 Z1/2"X14 1" X14 19.5 13 52 24 30
2NF-12 Z3/4"X14 1.3/16"X12 19.5 15 55.5 30 36
2NF-12-16 Z3/4"X14 1.7/16"X12 19.5 15 58.5 36 41
2NF-16 Z1 W X11.5 1.7/16"X12 25.5 15 64.5 36 41
2NF-16-20 zrxn.5 1.11/16"X12 25.5 15 66 41 50
2NF-20 Z1.1/4"X11.5 1.11/16"X12 26.5 15 67 46 50
2NF-24 Z1.1/2 W X11.5 2" X12 27.5 15 72.5 50 60
6NF

6NF NPT Male/ORFS Male Bulkhead

Technical Specifications
Part No. Thread O-Ring Dimensions
E F F A B L S1
6NF-02-04 Z1/8"X27 9/16"X18 11 10.5 32 50.5 22
6NF«04 Z1/4"X18 9/16"X18 11 15 32 55 22
6NF-04-06 Z1/4"X18 11/16"X16 12 15 34 59 27
6NF<06 Z3/8"X18 11/16"X16 12 16 34 60 27
6NF-08 Z1/2"X14 13/16"X16 14 19.5 36.5 66 30
6NF-12 Z3/4"X14 1.3/16"X12 18 19.5 41.7 72 38
6NF-16 Z1"X11.5 1.7/16"X12 21 25.5 42.2 80.5 46
AFFN

AFFN ORFS Male/ORFS Male/NPT Male

Technical Specifications
Part No. Thread O-Ring Dimensions
E F G E F A B C S1
AFFN-04 9/16 w X18 9/16"X18 Z1/4-X18 11 11 23 23 25.5 14
AFFN-06-06-04 11/16"X16 11/16"X16 Z1/4-X18 12 12 27.5 27.5 28.5 19
AFFN-06 11/16"X16 11/16"X16 Z3/8-X18 12 12 27.5 27.5 31 19
AFFN-08-08-06 13/16"X16 13/16"X16 Z3/8-X18 14 14 31 31 33.5 22
AFFN-08 13/16"X16 13/16"X16 Z1/2-X14 14 14 31 31 37.3 22
AFFN-10-10-08 1_X14 rxi4 Z1/2-X14 16 16 36.5 36.5 40 27
AFFN-12-12-08 1.3/16-X12 1.3/16'X12 Z1/2-X14 18 18 41 41 41.5 30
AFFN-12 1.3/16-X12 1.3/16-X12 Z3/4-X14 18 18 41 41 45.5 30
AFFN-16 1.7/16-X12 1.7/16-X12 Z1-X11.5 21 21 44.5 44.5 51.5 36
AFFN-20 1.11/16"X12 1.11/16"X12 Z1.1/4-X11.5 25 25 47.5 47.5 54.5 41
AFFN-24 2"X12 2"X12 Z1.1/2-X11.5 29 29 53.5 53.5 61 50
1N

1N NPT Male

Technical Specifications
Part No. Thread Dimensions
E F A B L S1
1N-02 Z1/8"X27 Z1/8"X27 10.5 10.5 27 12
1N-02-04 Z1/8"X27 Z1/4-X18 10.5 15 31 17
1N-02-06 Z1/8"X27 Z3/8"X18 10.5 16 32 19
1N-04 Z1/4"X18 Z1/4"X18 15 15 35 17
1N-04-06 Z1/4"X18 Z3/8"X18 15 16 37 19
1N-04-08 Z1/4"X18 Z1/2"X14 15 19.5 41.5 22
1N-06 Z3/8"X18 Z3/8"X18 16 16 38 19
1N-06-08 Z3/8"X18 Z1/2"X14 16 19.5 43.5 22
1N-06-12 Z3/8"X18 Z3/4"X14 16 19.5 45.5 27
1N-08 Z1/2"X14 Z1/2_X14 19.5 19.5 47 22
1N-08-12 Z1/2"X14 Z3/4"X14 19.5 19.5 49 27
1N-08-16 Z1/2"X14 Z1"X11.5 19.5 25.5 56 36
1N-12 Z3/4"X14 Z3/4"X14 19.5 19.5 49 27
1N-12-16 Z3/4"X14 Z1"X11.5 19.5 25.5 55 36
1N-12-20 Z3/4"X14 Z1.1/4"X11.5 19.5 26.5 59 46
1N-16 Z1"X11.5 Z1"X11.5 25.5 25.5 61 36
1N-16-20 Z1"X11.5 Z1.1/4"X11.5 25.5 26.5 64 46
1N-16-24 Z1"X11.5 Z1.1/2"X11.5 25.5 27.5 68 50
1N-20 Z1.1/4"X11.5 Z1.1/4 H X11.5 26.5 26.5 65 46
1N-20-24 Z1.1/4"X11.5 Z1.1/2"X11.5 26.5 27.5 69 50
1N-24 Z1.1/2"X11.5 Z1.1/2"X11.5 27.5 27.5 69 50
1N-24-32 Z1.1/2 M X11.5 Z2"X11.5 27.5 27.5 72 65
1N-32 Z2"X11.5 Z2"X11.5 27.5 27.5 71 65
1N4

1N4 45° NPT Male/NPT Male

Technical Specifications
Part No. Thread Dimensions
E F A B S1
1N4-02 ZWX27 Z1/8"X27 17 17 11
1N4-04 Z1/4"X18 Z1/4"X18 21 21 14
1N4-06 Z3/8"X18 Z3/8"X18 24 24 19
1N4-08 Z1/2"X14 Z1/2"X14 29.5 29.5 22
1N4-12 Z3/4"X14 Z3/4"X14 35 35 27
1N4-16 Z1"X11_5 Z1"X11.5 39 39 33
1N4-20 Z1.1/4 W X11.5 Z1.1/4 H X11.5 42.5 42.5 41
1N4-24 Z1.1/2 M X11.5 Z1.1/2 H X11.5 45 45 48
1N4-32 Z2"X11.5 Z2"X11.5 50 50 63
1N9

1N9 90° Elbow NPT Male

Technical Specifications
Part No. Thread Dimensions
E F A B S1
1N9-02 Z1/8"X27 Z1/8"X27 21 21 11
1N9-02-04 Z1/8"X27 Z1/4"X18 23.5 25.5 14
1N9-04 Z1/4 X 18 Z1/4"X18 25.5 25.5 14
1N9-04-06 Z1/4"X18 Z3/8"X18 28 31 19
1N9-04-08 Z1/4"
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