316L Stainless Steel Compression fitting external thread through plate connector

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316L Stainless Steel Compression fitting external thread through plate connector

This connector is the “all-rounder” of fluid systems, perfectly combining the dual functions of bulkhead mounting and male thread conversion. It is specifically designed for rigorous applications where a tube must pass through a panel and connect directly to internal threaded ports, such as solenoid valves, sensors, or manifolds.

Solving Your Core Engineering Pain Points

Reduced Component Stacking and Leak Risks:
Traditional setups often require a clunky combination of “Bulkhead Union + Adapter + Male Connector.” Our Bulkhead Male Connector achieves this in one step. Fewer connection points mean lower leak potential and a much cleaner internal enclosure layout.

Dual-Fixation Stability:
The heavy-duty bulkhead locking nut, paired with the precision-machined male thread end, ensures physical stability on the panel. It is engineered to withstand tensile and vibrational loads from the tubing side, preventing interface fatigue failure.

Ultimate 316L Material Purity:
Utilizing high-standard 316L stainless steel with ultra-low carbon content effectively resists intergranular corrosion. This makes it the premier choice for high-purity gas delivery, hydrogen energy equipment, and precision analytical instruments in marine environments.
High-Precision Threads and Hardening Process:
The male thread end (available in NPT, BSP, G, etc.) undergoes cold-work reinforcement and grinding. This provides superior engagement accuracy and a smooth, anti-galling installation experience, ensuring airtight integrity even after frequent disassembly.

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(METRIC)

CATALOG NUMBER

TUBE O.D.

PIPESIZE PT/NPT

  A

B

D

  E

F

G

H

PANEL HOLE SIZE

MAX PANEL THICK

  BMC-6-1

  6 

  1/8

 49.8 

10 

15.8 

4.8 

16 

14 

42 

11.5 

11.2 

  BMC-6-2

  6 

  1/4

 53.8 

14 

15.8 

4.8 

16 

14 

46 

11.5 

11.2 

  BMC-6-3

  6 

  3/8

 53.8 

14 

15.8 

4.8 

17 

14 

46 

11.5 

11.2 

  BMC-6-4

  6 

  1/2

 61.8 

19 

15.8 

4.8 

22 

14 

54 

11.5 

11.2 

  BMC-8-1

  8 

  1/8

 52.1 

10 

16.7 

6.4 

16 

16 

44.4 

13.1 

11.2 

  BMC-8-2

  8 

  1/4

 56.7 

14 

16.7 

6.4 

19 

16 

49 

13.1 

11.2 

  BMC-8-3

  8 

  3/8

 56.7 

14 

16.7 

6.4 

19 

16 

49 

13.1 

11.2 

  BMC-8-4

  8 

  1/2

 63.7 

19 

16.7 

6.4 

22 

16 

56 

13.1 

11.2 

BMC-10-2

  10 

  1/4

 58.1 

14 

19.6 

7.1 

22 

19 

50.5 

16.3 

11.2 

BMC-10-3

  10 

  3/8

 58.1 

14 

19.6 

7.9 

22 

19 

50.5 

16.3 

11.2 

BMC-10-4

  10 

  1/2

 64.9 

19 

19.6 

7.9 

22 

19 

57.3 

16.3 

11.2 

BMC-12-2

  12 

  1/4

 63.9 

14 

23.8 

7.1 

24 

22 

53.1 

19.5 

12.7 

BMC-12-3

  12 

  3/8

 63.9 

14 

23.8 

9.5 

24 

22 

53.1 

19.5 

12.7 

BMC-12-4

  12 

  1/2

 69.6 

19 

23.8 

9.5 

24 

22 

58.8 

19.5 

12.7 


(FRACTIONAL)

 BMC-02-1

1/4

1/8

49.8 

10 

15.8 

4.8 

16 

14 

42 

11.5 

11.2 

 BMC-02-2

1/4

1/4

53.8 

14 

15.8 

4.8 

16 

14 

46 

11.5 

11.2 

 BMC-02-3

1/4

3/8

53.8 

14 

15.8 

4.8 

17 

14 

46 

11.5 

11.2 

 BMC-02-4

1/4

1/2

61.8 

19 

15.8 

4.8 

22 

14 

54 

11.5 

11.2 

 BMC-03-2

3/8

1/4

57.6 

14 

19.6 

7.1 

19 

17 

50 

14.7 

11.2 

  BMC-03-3

3/8

3/8

57.6 

14 

19.6 

7.1 

19 

17 

50 

14.7 

11.2 

 BMC-03-4

3/8

1/2

64.9 

19 

19.6 

7.1 

24 

17 

57.3 

14.7 

11.2 

 BMC-04-2

1/2

1/4

63.5 

14 

23.4 

7.1 

24 

22 

53.1 

19.5 

12.7 

 BMC-04-3

1/2

3/8

63.5 

14 

23.4 

9.5 

24 

22 

53.1 

19.5 

12.7 

 BMC-04-4

1/2

1/2

69.2 

19 

23.4 

10.4 

24 

22 

58.8 

19.5 

12.7 

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
  • NB-KSL® fittings are supplied assembled and finger tight. Disassembly before use can allow the entry of dirt or other particles.

  • The NB-KSL® tube fitting is a mechanism used both to seal and to grip tubing. The mechanical advantage and geometry of this type of fitting produce a leak-tight assembly. To assemble, simply insert th...

  • NB-KSL® has produced high quality tube and pipe fittings in various materials for high-pressure applications since its establishment in 2007. As a result of tremendous efforts in research and developm...