METALOK INDUSTRIES

FEMALE TUBE ADAPTOR - BSPP

FEMALE TUBE ADAPTOR - BSPP

The Female Tube Adaptor – BSPP (British Standard Pipe Parallel) is designed to connect tube systems to male BSPP-threaded ports, providing a reliable and leak-tight connection. One end is compatible with METALOK INDUSTRIES® or equivalent compression fittings, while the other features a precision-machined female BSPP thread. This adaptor is commonly used with bonded seals (such as Dowty washers) to achieve a secure seal against flat faces. It is ideal for use in instrumentation, hydraulic, pneumatic, and process systems requiring high integrity and ease of maintenance. Available in sizes from 1/8” to 2” (imperial) and 3mm to 50mm (metric), this fitting is manufactured from corrosion-resistant materials including Stainless Steel (SS), Brass, Duplex, Monel, and Hastelloy.

  • Female BSPP parallel thread designed for use with bonded washers.
  • Compatible with METALOK and other standard tube fittings.
  • Constructed from high-performance, corrosion-resistant materials.
  • Precision-machined for tight and repeatable sealing.
  • Designed for flat-face port applications in moderate- to high-pressure systems.
  • Provides a reliable, leak-tight seal with bonded washers.
  • Suitable for use in sensitive instrumentation and fluid control systems.
  • Excellent resistance to corrosion, pressure, and mechanical stress.
  • Simplifies system layout and minimizes the need for sealing compounds.
  • Ideal for industrial, chemical, and hydraulic applications.
Part NumberT
(Tube OD)
Tx
(NPT)
L
(mm)
L1
(mm)
Ø D
(mm)
H
(Inch)
H1
(Inch)
2-FC-2N1/8″1/8″28.722.12.39/167/16
2-FC-4N1/8″1/4″33.526.92.33/47/16
3-FC-2N3/16″1/8″29.723.13.09/161/2
4-FC-2N1/4″1/8″31.223.94.89/169/16
4-FC-4N1/4″1/4″35.828.44.83/49/16
4-FC-6N1/4″3/8″37.630.24.87/89/16
4-FC-8N1/4″1/2″42.435.04.81.1/169/16
5-FC-2N5/16″1/8″32.024.66.39/165/8
5-FC-4N5/16″1/4″36.829.56.33/45/8
6-FC-2N3/8″1/8″32.825.47.15/811/16
6-FC-4N3/8″1/4″37.630.27.13/411/16
6-FC-6N3/8″3/8″39.131.77.17/811/16
6-FC-8N3/8″1/2″43.936.67.11.1/1611/16
6-FC-12N3/8″3/4″47.740.47.11.5/1611/16
8-FC-4N1/2″1/4″40.430.210.413/167/8
8-FC-6N1/2″3/8″41.931.710.47/87/8
8-FC-8N1/2″1/2″46.736.610.41.1/167/8
8-FC-12N1/2″3/4″48.338.110.41.5/167/8
10-FC-6N5/8″3/8″41.931.712.715/161
10-FC-8N5/8″1/2″46.736.612.71.1/161
12-FC-8N3/4″1/2″46.736.615.71.1/161.1/8
12-FC-12N3/4″3/4″48.338.115.71.5/161.1/8
14-FC-16N7/8″1″49.839.615.31.5/161.1/4
16-FC-12N1″3/4″53.341.122.31.3/81.1/2
16-FC-16N1″1″62.250.022.31.5/81.1/2
Part NumberT
(Tube OD)
Tx
(NPT)
L
(mm)
L1
(mm)
Ø D
(mm)
H
(mm)
H1
(mm)
3M-FC-2N3 mm1/8″28.722.12.41412
3M-FC-4N3 mm1/4″33.526.92.41912
4M-FC-2N4 mm1/8″29.723.12.41412
6M-FC-2N6 mm1/8″31.323.94.81414
6M-FC-4N6 mm1/4″35.828.44.81914
6M-FC-6N6 mm3/8″37.630.24.82214
6M-FC-8N6 mm1/2″42.535.14.82714
8M-FC-2N8 mm1/8″32.124.66.41616
8M-FC-4N8 mm1/4″37.029.56.41916
8M-FC-6N8 mm3/8″38.531.06.42216
8M-FC-8N8 mm1/2″43.335.86.42716
10M-FC-2N10 mm1/8″33.025.47.91919
10M-FC-4N10 mm1/4″37.830.27.91919
10M-FC-6N10 mm3/8″39.431.87.92219
10M-FC-8N10 mm1/2″44.236.67.92719
12M-FC-2N12 mm1/8″35.525.48.32222
12M-FC-4N12 mm1/4″40.330.29.52222
12M-FC-6N12 mm3/8″41.931.89.52222
12M-FC-8N12 mm1/2″46.736.69.52722
12M-FC-12N12 mm3/4″49.038.99.53522
15M-FC-8N15 mm1/2″46.736.611.92725
16M-FC-8N16 mm1/2″46.936.812.72725
20M-FC-8N20 mm1/2″47.937.815.93032
20M-FC-12N20 mm3/4″49.739.615.93532
22M-FC-12N22 mm3/4″49.739.618.33532
22M-FC-16N22 mm1″57.947.818.34132
25M-FC-12N25 mm3/4″53.441.121.83538
25M-FC-16N25 mm1″52.350.021.84138

Working