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316L Stainless Steel Compression fitting external thread connector

Home / Products / Stainless Steel Tube Fittings / Tube To Male Pipe / 316L Stainless Steel Compression fitting external thread connector

316L Stainless Steel Compression fitting external thread connector

At every entry and exit point of a fluid system, the reliability of the connection determines the safety of the entire production line. Our 316L Stainless Steel Male Connector is specifically engineered to bridge the gap between instrumentation tubing and equipment such as valves, pumps, pressure vessels, or distribution manifolds.

Why Is This Connector the Engineer’s Top Choice?

Extreme Corrosion Resistance for Harsh Conditions:
Crafted from premium 316L low-carbon stainless steel, this connector offers exceptional resistance to pitting and performs robustly against acidic media and salt spray. Compared to standard materials, its service life is extended by over 30%, significantly reducing downtime and maintenance costs.

Gas-Tight High-Pressure Sealing:
Utilizing advanced double-ferrule swaging technology paired with precision-machined external threads (NPT/ISO/BSP), it creates a dual-layer defense. Whether facing high-pressure surges up to 6000 psi or the challenges of light gas permeation, it maintains a rock-solid seal.

Precision Threads for Seamless Installation:
Every external thread undergoes specialized grinding and hardening processes to effectively eliminate thread galling. Even in confined spaces, installation is fast and smooth, drastically improving on-site assembly efficiency.

Full-Flow Design for Maximum Efficiency:
The optimized internal bore ensures minimal flow resistance. This enhances the overall energy efficiency of your system and provides superior flow stability for sensitive applications.

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  • Description
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CATALOG NUMBER

T TUBE O.D.

PT-NPT MALE PIPE SIZE

A

B

D

E

F

G

H

MC-3-1

3 

1/8

32 

10 

13.5 

2.4 

12 

12 

25 

MC-3-2

3 

1/4

37 

14 

13.5 

2.4 

14 

12 

30 

MC-4-1

4 

1/8

32.2 

10 

13.7 

3 

12 

12 

25.5 

MC-4-2

4 

1/4

36.7 

14 

13.7 

3 

14 

12 

30 

MC-6-1

6 

1/8

33.8 

10 

15.8 

4.8 

14 

14 

26 

MC-6-2

6 

1/4

38.8 

14 

15.8 

4.8 

14 

14 

31 

MC-6-3

6 

3/8

38.8 

14 

15.8 

4.8 

17 

14 

31 

MC-6-4

6 

1/2

45.1 

19 

15.8 

4.8 

22 

14 

37.3 

MC-8-1

8 

1/8

34.7 

10 

16.7 

4.8 

14 

16 

27 

MC-8-2

8 

1/4

39.7 

14 

16.7 

6 

14 

16 

32 

MC-8-3

8 

3/8

39.7 

14 

16.7 

6.4 

17 

16 

32 

MC-8-4

8 

1/2

45.8 

19 

16.7 

6.4 

22 

16 

38.1 

MC-10-1

10 

1/8

36.6 

10 

19.6 

4.8 

17 

19 

29 

MC-10-2

10 

1/4

40.6 

14 

19.6 

7.1 

17 

19 

33 

MC-10-3

10 

3/8

40.6 

14 

19.6 

9.5 

17 

19 

33 

MC-10-4

10 

1/2

46.5 

19 

19.6 

7.9 

22 

19 

38.9 

MC-10-6

10 

3/4

48 

19 

19.6 

7.9 

27 

19 

40.4 

MC-12-1

12 

1/8

39.8 

10 

23.8 

4.8 

19 

22 

29 

MC-12-2

12 

1/4

44.1 

14 

23.8 

7.1 

19 

22 

33.3 

MC-12-3

12 

3/8

44.1 

14 

23.8 

9.5 

19 

22 

33.3 

MC-12-4

12 

1/2

49.7 

19 

23.8 

9.5 

22 

22 

38.9 

MC-12-6

12 

3/4

51.2 

19 

23.8 

9.5 

27 

22 

40.4 

MC-12-8

12 

1"

57.8 

22 

23.8 

9.5 

35 

22 

47 

MC-14-3

14 

3/8

44.8 

14 

24.8 

9.5 

24 

27 

34 

MC-14-4

14 

1/2

49.7 

19 

24.8 

11.1 

24 

27 

38.9 

MC-14-6

14 

3/4

51.2 

19 

24.8 

11.1 

27 

27 

40.4 

MC-16-3

16 

3/8

44.4 

14 

24.4 

9.5 

24 

27 

34 

MC-16-4

16 

1/2

49.3 

19 

24.4 

11.9 

24 

27 

38.9 

MC-16-6

16 

3/4

50.8 

19 

24.4 

12.7 

27 

27 

40.4 

MC-18-3

18 

3/8

46.2 

14 

24.8 

9.5 

27 

30 

35.4 

MC-18-4

18 

1/2

51.2 

19 

24.8 

11.9 

27 

30 

40.4 

MC-18-6

18 

3/4

51.2 

19 

24.8 

15.1 

27 

30 

40.4 

MC-18-8

18 

1"

57.8 

22 

24.8 

15.1 

35 

30 

47 

MC-20-4

20 

1/2

52.7 

19 

25.5 

11.9 

30 

32 

42.2 

MC-20-6

20 

3/4

52.7 

19 

25.5 

15.9 

30 

32 

42.2 

MC-22-4

22 

1/2

52.7 

19 

25.5 

11.9 

30 

32 

42.2 

MC-22-6

22 

3/4

52.7 

19 

25.5 

15.9 

30 

32 

42.2 

MC-22-8

22 

1"

57.5 

22 

25.5 

18.3 

35 

32 

47 

MC-25-4

25 

1/2

57.9 

19 

31.7 

11.9 

35 

38 

45.2 

MC-25-6

25 

3/4

57.9 

19 

31.7 

15.9 

35 

38 

45.2 

MC-25-8

25 

1"

62.7 

22 

31.7 

21.8 

35 

38 

50 

(METRIC)

CATALOG NUMBER

T TUBE O.D.

PT-NPT MALE PIPE SIZE

A

B

D

E

F

G

H

MC-01-1

1/8

1/8

32.5 

10 

14 

2.4 

12 

12 

25 

MC-01-2

1/8

1/4

37.5 

14 

14 

2.4 

14 

12 

30 

MC-01-3

1/8

3/8

37.5 

14 

14 

2.4 

14 

12 

30 

MC-01-4

1/8

1/2

43.8 

19 

14 

2.4 

22 

12 

36.3 

MC-02-1

1/4

1/8

33.8 

10 

15.8 

4.8 

14 

14 

26 

MC-02-2

1/4

1/4

38.8 

14 

15.8 

4.8 

14 

14 

31 

MC-02-3

1/4

3/8

38.8 

14 

15.8 

4.8 

17 

14 

31 

MC-02-4

1/4

1/2

45.1 

19 

15.8 

4.8 

22 

14 

37.3 

MC-02-6

1/4

3/4

46.1 

19 

15.8 

4.8 

27 

14 

38.3 

MC-03-1

3/8

1/8

36.6 

10 

19.6 

4.8 

17 

17 

29 

MC-03-2

3/8

1/4

40.1 

14 

19.6 

7.1 

17 

17 

32.5 

MC-03-3

3/8

3/8

40.1 

14 

19.6 

7.1 

17 

17 

32.5 

MC-03-4

3/8

1/2

46.5 

19 

19.6 

7.1 

22 

17 

38.9 

MC-03-6

3/8

3/4

47.9 

19 

19.6 

7.1 

27 

17 

40.3 

MC-04-1

1/2

1/8

39.2 

10 

23.4 

4.8 

19 

22 

29 

MC-04-2

1/2

1/4

43.2 

14 

23.4 

7.1 

19 

22 

33 

MC-04-3

1/2

3/8

43.5 

14 

23.4 

9.5 

19 

22 

33.3 

MC-04-4

1/2

1/2

49.1 

19 

23.4 

10.4 

22 

22 

38.9 

MC-04-6

1/2

3/4

50.5 

19 

23.4 

10.4 

27 

22 

40.3 

MC-04-8

1/2

1"

57.2 

22 

23.4 

10.4 

35 

22 

47 

MC-05-3

5/8

3/8

44.4 

14 

24.4 

9.5 

24 

27 

34 

MC-05-4

5/8

1/2

49.3 

19 

24.4 

11.9 

24 

27 

38.9 

MC-05-6

5/8

3/4

50.7 

19 

24.4 

12.7 

27 

27 

40.3 

MC-06-4

3/4

1/2

50.7 

19 

24.4 

11.9 

27 

30 

40.3 

MC-06-6

3/4

3/4

50.7 

19 

24.4 

15.7 

27 

30 

40.3 

MC-06-8

3/4

1"

57.4 

22 

24.4 

15.7 

35 

30 

47 

MC-08-4

1"

1/2

57.9 

19 

31.7 

11.9 

35 

38 

45.2 

MC-08-6

1"

3/4

57.9 

19 

31.7 

15.9 

35 

38 

45.2 

MC-08-8

1"

1"

62.7 

22 

31.7 

22.4 

35 

38 

50 

(FRACTIONAL)

CATALOG
NUMBER

A

T

L

M

I

D

W

K

N

MC-01-01

1/8

G1/8

30.9 

7.1 

14 

2.4 

14 

13.8 

23.4 

MC-01-02

1/8

G1/4

36.7 

11.2 

14 

2.4 

19 

18 

29.2 

MC-02-01

1/4

G1/8

32.8 

7.1 

17.8 

4.8 

14 

13.8 

25 

MC-02-02

1/4

G1/4

38 

11.2 

17.8 

4.8 

19 

18 

30.2 

MC-02-03

1/4

G3/8

39.3 

11.2 

17.8 

4.8 

22 

21.8 

31.5 

MC-02-04

1/4

G1/2

45.1 

14.2 

17.8 

4.8 

27 

26 

37.3 

MC-03-01

3/8

G1/8

35.7 

7.1 

19.6 

4.8 

17 

13.8 

28.1 

MC-03-02

3/8

G1/4

39.4 

11.2 

19.6 

6.4 

19 

18 

31.8 

MC-03-03

3/8

G3/8

40.3 

11.2 

19.6 

7.1 

22 

21.8 

33 

MC-03-04

3/8

G1/2

46.5 

14.2 

19.6 

7.1 

27 

26 

38.9 

MC-03-06

3/8

G3/4

50.3 

15.7 

19.6 

7.1 

35 

32 

42.7 

MC-04-01

1/2

G1/8

38.6 

7.1 

23.4 

4.8 

19 

13.8 

28.4 

MC-04-02

1/2

G1/4

42.7 

11.2 

23.4 

4.8 

19 

18 

32.5 

MC-04-03

1/2

G3/8

43.2 

11.2 

23.4 

7.9 

22 

21.8 

33 

MC-04-04

1/2

G1/2

49.1 

14.2 

23.4 

10.4 

27 

26 

38.9 

MC-04-06

1/2

G3/4

52.9 

15.7 

23.4 

10.4 

35 

32 

42.7 

MC-04-08

1/2

G1"

55.4 

18.3 

23.4 

10.4 

41 

39 

45.2 

MC-06-04

3/4

G1/2

49.3 

14.2 

24.4 

11.9 

27 

26 

38.9 

MC-06-06

3/4

G3/4

53.1 

15.7 

24.4 

15.9 

35 

32 

42.7 

MC-06-08

3/4

G1"

55.6 

18.3 

24.4 

15.9 

41 

39 

45.2 

MC-08-04

1"

G1/2

56.2 

14.2 

31.7 

11.9 

35 

26 

43.5 

MC-08-06

1"

G3/4

57 

15.7 

31.7 

15.9 

35 

32 

44.3 

MC-08-08

1"

G1"

60.5 

18.3 

31.7 

19.8 

41 

39 

47.8 

All Dimensions Are in Millimeters. Unless Otherwise Specified. Only for Reference Subject to Change.

(FRACTIONAL)

CATALOG NUMBER

A

T

M

l

D

W

K

N

MC-3-01

3 

1/8

30.9 

7.1 

14 

2.4 

14 

13.8 

23.4 

MC-3-02

3 

1/4

36.7 

11.2 

14 

2.4 

19 

18 

29.2 

MC-6-01

6 

1/8

32.8 

7.1 

15.8 

4.8 

14 

13.8 

25 

MC-6-02

6 

1/4

38 

11.2 

15.8 

4.8 

19 

18 

30.2 

MC-6-03

6 

3/8

39.3 

11.2 

15.8 

4.8 

22 

21.80 

31.5 

MC-6-04

6 

1/2

45.1 

14.2 

15.8 

4.8 

27 

26 

37.3 

MC-8-01

8 

1/8

33.7 

7.1 

16.7 

4.8 

14 

13.8 

26 

MC-8-02

8 

1/4

38.9 

11.2 

16.7 

6.4 

19 

18.00 

31.2 

MC-8-03

8 

3/8

40 

11.2 

16.7 

6.4 

22 

21.8 

32.3 

MC-8-04

8 

1/2

45.8 

14.2 

16.7 

6.4 

27 

26.00 

38.1 

MC-10-01

10 

1/8

35.7 

7.1 

19.6 

4.8 

17 

13.8 

28.1 

MC-10-02

10 

1/4

39.4 

11.2 

19.6 

6.4 

19 

18 

31.8 

MC-10-03

10 

3/8

40.6 

11.2 

19.6 

7.9 

22 

21.80 

33 

MC-10-04

10 

1/2

46.5 

14.2 

19.6 

7.9 

27 

26 

38.9 

MC-12-01

12 

1/8

39.2 

7.1 

23.8 

4.8 

19 

13.80 

28.4 

MC-12-02

12 

1/4

43.3 

11.2 

23.8 

6.4 

19 

18 

32.5 

MC-12-03

12 

3/8

43.8 

11.2 

23.8 

7.9 

22 

21.80 

33 

MC-12-04

12 

1/2

49.7 

14.2 

23.8 

9.5 

27 

26 

38.9 

MC-12-06

12 

3/4

53.5 

15.7 

23.8 

9.5 

35 

32.00 

42.7 

MC-14-03

14 

3/8

44.6 

11.2 

24.8 

7.9 

22 

21.8 

33.8 

MC-14-04

14 

1/2

49.7 

14.2 

24.8 

11.1 

27 

26.00 

38.9 

MC-15-04

15 

1/2

49.7 

14.2 

24.4 

11.9 

27 

26 

38.9 

MC-16-03

16 

3/8

44.2 

11.2 

24.4 

7.9 

22 

21.80 

33.8 

MC-16-04

16 

1/2

49.3 

14.2 

24.4 

11.9 

27 

26 

38.9 

MC-18-04

18 

1/2

49.7 

14.2 

24.8 

11.9 

27 

26.00 

38.9 

MC-22-06

22 

3/4

53.2 

15.7 

25.5 

15.9 

35 

32 

42.7 

MC-25-06

25 

3/4

57 

15.7 

31.7 

15.9 

35 

32.00 

44.3 

All Dimensions Are in Millimeters. Unless Otherwise Specified. Only for Reference Subject to Change.

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About Us
Ningbo Keshengli Stainless Steel Valve Co., Ltd.
Ningbo Keshengli Stainless Steel Valve Co., Ltd.

Our company specializes in the manufacturing and sales of stainless steel pipe fittings and valves in national (GB), American (ANSI/ASME), and British (BS) standards. We are equipped with advanced CNC machining centers, material testing and heat treatment facilities, a skilled technical team, and a robust production workforce. With a sound quality management system and excellent after-sales service, we sincerely serve customers worldwide.

Our main products include: ferrule-type fittings, threaded fittings, instrument fittings, instrument needle valves, instrument ball valves, ferrule needle valves, ferrule ball valves, compact high-pressure instrument needle valves, compact high-pressure instrument ball valves, and high-pressure check valves. The primary material is SS316 stainless steel. These products are widely used in petrochemical, petroleum, electric power, pharmaceutical, food, papermaking, marine, and general machinery industries.

We strictly control product quality at every stage and are committed to delivering superior quality through advanced technology and professional management. Adhering to the business philosophy of "Quality First, Customer Supreme, Integrity Foremost," we strive to build the "NB-KSL" brand image, better serve our customers, and work together with you to create a prosperous future.

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News
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