METALOK INDUSTRIES

BULKHEAD FEMALE CONNECTOR - NPT

BULKHEAD FEMALE CONNECTOR - NPT

The Bulkhead Female Connector – NPT is designed for creating secure and leak-tight connections through panels or enclosures in fluid and gas systems using National Pipe Tapered (NPT) threads. This connector features female NPT threading on both sides of the bulkhead, allowing it to connect tubing or piping sections while passing through a barrier. It is ideal for applications requiring structural support and a sealed connection across walls, tanks, or panels. Available in sizes from 1/8” to 2” (imperial) and 3mm to 50mm (metric), it is manufactured from corrosion-resistant materials such as Stainless Steel (SS), Brass, Duplex, Monel, and Hastelloy. The Bulkhead Female Connector – NPT is commonly used in chemical processing, instrumentation, water treatment, and oil & gas industries.

  • Female NPT threaded ends on both sides for secure pipe or tube connections.
  • Designed for mounting through panels or bulkheads.
  • Available in corrosion-resistant materials like SS, Brass, Duplex, Monel, and Hastelloy.
  • Supports high-pressure and demanding system requirements.
  • Precision-machined for leak-tight performance and durability.
  • Enables leak-proof connections across enclosures or structural panels.
  • Provides mechanical support while maintaining system integrity.
  • Withstands harsh environments and high-pressure conditions.
  • Simplifies system layout and panel integration.
  • Ideal for fluid, gas, and instrumentation applications requiring durable bulkhead fittings.
Part NumberT
(Tube OD)
Tx
(NPT)
L
(mm)
L1
(mm)
Ø D
(mm)
H
(Inch)
H1
(Inch)
2-MC-2N1/8″1/8″30.523.92.37/167/16
3-MC-2N3/16″1/8″31.224.63.07/161/2
3-MC-4N3/16″1/4″36.329.73.09/161/2
4-MC-2N1/4″1/8″32.825.44.81/29/16
4-MC-4N1/4″1/4″37.830.54.89/169/16
4-MC-6N1/4″3/8″38.331.04.811/169/16
4-MC-8N1/4″1/2″44.737.34.87/89/16
5-MC-2N5/16″1/8″34.036.74.89/165/8
5-MC-4N5/16″1/4″38.631.26.39/165/8
6-MC-2N3/8″1/8″35.327.94.85/811/16
6-MC-4N3/8″1/4″39.932.57.15/811/16
6-MC-6N3/8″3/8″39.932.57.111/1611/16
6-MC-8N3/8″1/2″46.238.97.17/811/16
6-MC-12N3/8″3/4″47.740.47.11.1/1611/16
8-MC-2N1/2″1/8″38.928.74.813/167/8
8-MC-4N1/2″1/4″43.333.37.113/167/8
8-MC-6N1/2″3/8″43.433.39.613/167/8
8-MC-8N1/2″1/2″49.038.910.47/87/8
8-MC-12N1/2″3/4″50.540.410.41.1/167/8
8-MC-16N1/2″1″57.147.010.41.3/87/8
10-MC-6N5/8″3/8″44.234.09.615/161
10-MC-8N5/8″1/2″49.038.911.915/161
10-MC-12N5/8″3/4″50.540.412.71.1/161
12-MC-8N3/4″1/2″50.540.411.91.1/161.1/8
12-MC-12N3/4″3/4″50.540.415.71.1/161.1/8
12-MC-16N3/4″1″57.147.015.71.3/81.1/8
14-MC-12N7/8″3/4″50.540.415.71.3/161.1/4
16-MC-12N1″3/4″57.445.215.71.3/81.1/2
16-MC-16N1″1″62.250.022.31.3/81.1/2
Part NumberT
(Tube OD)
Tx
(NPT)
L
(mm)
L1
(mm)
Ø D
(mm)
H
(mm)
H1
(mm)
3M-MC-2N3 mm1/8″30.523.92.41212
3M-MC-4N3 mm1/4″35.629.02.41412
4M-MC-2N4 mm1/8″31.224.62.41212
4M-MC-4N4 mm1/4″36.329.72.41412
6M-MC-2N6 mm1/8″32.825.44.81414
6M-MC-4N6 mm1/4″37.930.54.81414
6M-MC-6N6 mm3/8″38.431.04.81914
6M-MC-8N6 mm1/2″44.737.34.82214
8M-MC-2N8 mm1/8″34.226.74.81616
8M-MC-4N8 mm1/4″38.731.26.41616
8M-MC-6N8 mm3/8″39.331.86.41916
8M-MC-8N8 mm1/2″45.638.16.42216
10M-MC-2N10 mm1/8″36.328.74.81719
10M-MC-4N10 mm1/4″40.933.37.91719
10M-MC-6N10 mm3/8″40.933.37.91919
10M-MC-8N10 mm1/2″46.538.97.92219
12M-MC-2N12 mm1/8″38.828.74.82222
12M-MC-4N12 mm1/4″43.433.37.12222
12M-MC-6N12 mm3/8″43.433.39.52222
12M-MC-8N12 mm1/2″49.038.99.52222
14M-MC-4N14 mm1/4″44.134.07.12425
14M-MC-6N14 mm3/8″44.134.09.52425
14M-MC-8N14 mm1/2″49.038.911.12425
16M-MC-6N16 mm3/8″44.134.09.52425
16M-MC-8N16 mm1/2″49.038.911.92425
16M-MC-12N16 mm3/4″50.540.412.72725
18M-MC-8N18 mm1/2″50.540.411.92730
18M-MC-12N18 mm3/4″50.540.415.12730
20M-MC-8N20 mm1/2″52.342.211.93032
20M-MC-12N20 mm3/4″52.342.215.93032
22M-MC-12N22 mm3/4″52.342.215.93032
22M-MC-16N22 mm1″57.147.018.33532
25M-MC-12N25 mm3/4″57.545.215.93538
25M-MC-16N25 mm1″62.350.021.83538

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