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Foster 2 Series Couplers

The Foster 2 Series is the miniature 1/8" body industrial interchange, built for low-volume air tools, instruments, and compact pneumatic systems. This collection includes 2 Series couplers and plugs in brass, steel, and stainless with NPT, hose barb, tube, and panel mount terminations. Filter by thread, material, and coupler or plug to find your exact part.

  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
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    $ 40.19
    $ 40.19 - $ 40.19
    $ 40.19
    $ 32.19
    $ 32.19 - $ 32.19
    $ 32.19

    Foster BL2042, 1/8" 2 Series Coupler x 1/4" Hose ID, Heavy-Duty Brass, Steel (Ball Lock)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster BL2042 is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster...

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    $ 40.19
    $ 40.19 - $ 40.19
    $ 40.19
    $ 32.19
    $ 32.19 - $ 32.19
    $ 32.19
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 11.99
    $ 11.99 - $ 11.99
    $ 11.99
    $ 9.59
    $ 9.59 - $ 9.59
    $ 9.59

    Foster 2042, 1/8" 2 Series Coupler x 1/4" Hose ID, Heavy-Duty Brass, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 2042 is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster 2...

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    $ 11.99
    $ 11.99 - $ 11.99
    $ 11.99
    $ 9.59
    $ 9.59 - $ 9.59
    $ 9.59
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 14.69
    $ 14.69 - $ 14.69
    $ 14.69
    $ 11.69
    $ 11.69 - $ 11.69
    $ 11.69

    Foster 2032S, 1/8" 2 Series Coupler x 3/16" Hose ID, Heavy-Duty Brass, Stainless (Steam)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 2032S is a Heavy-Duty Brass, Stainless 1/8" coupler from the proven Fos...

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    $ 14.69
    $ 14.69 - $ 14.69
    $ 14.69
    $ 11.69
    $ 11.69 - $ 11.69
    $ 11.69
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 14.19
    $ 14.19 - $ 14.19
    $ 14.19
    $ 11.29
    $ 11.29 - $ 11.29
    $ 11.29

    Foster 2032HW, 1/8" 2 Series Coupler x 3/16" Hose ID, Heavy-Duty Brass, Stainless (Hot Water)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 2032HW is a Heavy-Duty Brass, Stainless 1/8" coupler from the proven Fo...

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    $ 14.19
    $ 14.19 - $ 14.19
    $ 14.19
    $ 11.29
    $ 11.29 - $ 11.29
    $ 11.29
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 15.29
    $ 15.29 - $ 15.29
    $ 15.29
    $ 12.19
    $ 12.19 - $ 12.19
    $ 12.19

    Foster BL2032, 1/8" 2 Series Coupler x 3/16" Hose ID, Heavy-Duty Brass, Steel (Ball Lock)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster BL2032 is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster...

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    $ 15.29
    $ 15.29 - $ 15.29
    $ 15.29
    $ 12.19
    $ 12.19 - $ 12.19
    $ 12.19
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 19% Save %
    $ 11.39
    $ 11.39 - $ 11.39
    $ 11.39
    $ 9.19
    $ 9.19 - $ 9.19
    $ 9.19

    Foster 2032, 1/8" 2 Series Coupler x 3/16" Hose ID, Heavy-Duty Brass, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 2032 is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster 2...

    View full details
    $ 11.39
    $ 11.39 - $ 11.39
    $ 11.39
    $ 9.19
    $ 9.19 - $ 9.19
    $ 9.19
    Save 19% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 21% Save %
    $ 13.59
    $ 13.59 - $ 13.59
    $ 13.59
    $ 10.79
    $ 10.79 - $ 10.79
    $ 10.79

    Foster 2022W, 1/8" 2 Series Coupler x 1/8" Hose ID, Heavy-Duty Brass, Stainless (Water)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 2022W is a Heavy-Duty Brass, Stainless 1/8" coupler from the proven Fos...

    View full details
    $ 13.59
    $ 13.59 - $ 13.59
    $ 13.59
    $ 10.79
    $ 10.79 - $ 10.79
    $ 10.79
    Save 21% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 15.69
    $ 15.69 - $ 15.69
    $ 15.69
    $ 12.49
    $ 12.49 - $ 12.49
    $ 12.49

    Foster BL2022, 1/8" 2 Series Coupler x 1/8" Hose ID, Heavy-Duty Brass, Steel (Ball Lock)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster BL2022 is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster...

    View full details
    $ 15.69
    $ 15.69 - $ 15.69
    $ 15.69
    $ 12.49
    $ 12.49 - $ 12.49
    $ 12.49
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 10.59
    $ 10.59 - $ 10.59
    $ 10.59
    $ 8.49
    $ 8.49 - $ 8.49
    $ 8.49

    Foster 2022, 1/8" 2 Series Coupler x 1/8" Hose ID, Heavy-Duty Brass, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 2022 is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster 2...

    View full details
    $ 10.59
    $ 10.59 - $ 10.59
    $ 10.59
    $ 8.49
    $ 8.49 - $ 8.49
    $ 8.49
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 15.39
    $ 15.39 - $ 15.39
    $ 15.39
    $ 12.29
    $ 12.29 - $ 12.29
    $ 12.29

    Foster 2402H, 1/8" 2 Series Coupler x 1/4" Male NPT, Heavy-Duty Brass, Steel (Heat)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 2402H is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster ...

    View full details
    $ 15.39
    $ 15.39 - $ 15.39
    $ 15.39
    $ 12.29
    $ 12.29 - $ 12.29
    $ 12.29
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 16.89
    $ 16.89 - $ 16.89
    $ 16.89
    $ 13.49
    $ 13.49 - $ 13.49
    $ 13.49

    Foster BL2402, 1/8" 2 Series Coupler x 1/4" Male NPT, Heavy-Duty Brass, Steel (Ball Lock)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster BL2402 is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster...

    View full details
    $ 16.89
    $ 16.89 - $ 16.89
    $ 16.89
    $ 13.49
    $ 13.49 - $ 13.49
    $ 13.49
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 12.39
    $ 12.39 - $ 12.39
    $ 12.39
    $ 9.89
    $ 9.89 - $ 9.89
    $ 9.89

    Foster 2402, 1/8" 2 Series Coupler x 1/4" Male NPT, Heavy-Duty Brass, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 2402 is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster 2...

    View full details
    $ 12.39
    $ 12.39 - $ 12.39
    $ 12.39
    $ 9.89
    $ 9.89 - $ 9.89
    $ 9.89
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 13.99
    $ 13.99 - $ 13.99
    $ 13.99
    $ 11.19
    $ 11.19 - $ 11.19
    $ 11.19

    Foster 2202W, 1/8" 2 Series Coupler x 1/8" Male NPT, Heavy-Duty Brass, Stainless (Water)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 2202W is a Heavy-Duty Brass, Stainless 1/8" coupler from the proven Fos...

    View full details
    $ 13.99
    $ 13.99 - $ 13.99
    $ 13.99
    $ 11.19
    $ 11.19 - $ 11.19
    $ 11.19
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 13.99
    $ 13.99 - $ 13.99
    $ 13.99
    $ 11.19
    $ 11.19 - $ 11.19
    $ 11.19

    Foster 2202S, 1/8" 2 Series Coupler x 1/8" Male NPT, Heavy-Duty Brass, Stainless (Steam)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 2202S is a Heavy-Duty Brass, Stainless 1/8" coupler from the proven Fos...

    View full details
    $ 13.99
    $ 13.99 - $ 13.99
    $ 13.99
    $ 11.19
    $ 11.19 - $ 11.19
    $ 11.19
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 12.59
    $ 12.59 - $ 12.59
    $ 12.59
    $ 10.09
    $ 10.09 - $ 10.09
    $ 10.09

    Foster 2202H, 1/8" 2 Series Coupler x 1/8" Male NPT, Heavy-Duty Brass, Steel (Heat)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 2202H is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster ...

    View full details
    $ 12.59
    $ 12.59 - $ 12.59
    $ 12.59
    $ 10.09
    $ 10.09 - $ 10.09
    $ 10.09
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 37.89
    $ 37.89 - $ 37.89
    $ 37.89
    $ 30.29
    $ 30.29 - $ 30.29
    $ 30.29

    Foster BL2202S/S, 1/8" 2 Series Coupler x 1/8" Male NPT, 303 Stainless (Ball Lock)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster BL2202S/S is a 303 Stainless 1/8" coupler from the proven Foster 2 Seri...

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    $ 37.89
    $ 37.89 - $ 37.89
    $ 37.89
    $ 30.29
    $ 30.29 - $ 30.29
    $ 30.29
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 37.79
    $ 37.79 - $ 37.79
    $ 37.79
    $ 30.29
    $ 30.29 - $ 30.29
    $ 30.29

    Foster 2202S/S, 1/8" 2 Series Coupler x 1/8" Male NPT, 303 Stainless

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 2202S/S is a 303 Stainless 1/8" coupler from the proven Foster 2 Series...

    View full details
    $ 37.79
    $ 37.79 - $ 37.79
    $ 37.79
    $ 30.29
    $ 30.29 - $ 30.29
    $ 30.29
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 13.79
    $ 13.79 - $ 13.79
    $ 13.79
    $ 10.99
    $ 10.99 - $ 10.99
    $ 10.99

    Foster BL2202, 1/8" 2 Series Coupler x 1/8" Male NPT, Heavy-Duty Brass, Steel (Ball Lock)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster BL2202 is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster...

    View full details
    $ 13.79
    $ 13.79 - $ 13.79
    $ 13.79
    $ 10.99
    $ 10.99 - $ 10.99
    $ 10.99
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 10.49
    $ 10.49 - $ 10.49
    $ 10.49
    $ 8.39
    $ 8.39 - $ 8.39
    $ 8.39

    Foster 2202, 1/8" 2 Series Coupler x 1/8" Male NPT, Heavy-Duty Brass, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 2202 is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster 2...

    View full details
    $ 10.49
    $ 10.49 - $ 10.49
    $ 10.49
    $ 8.39
    $ 8.39 - $ 8.39
    $ 8.39
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 14.29
    $ 14.29 - $ 14.29
    $ 14.29
    $ 11.39
    $ 11.39 - $ 11.39
    $ 11.39

    Foster 2702HW, 1/8" 2 Series Coupler x 1/4" Female NPT, Heavy-Duty Brass, Stainless (Hot Water)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 2702HW is a Heavy-Duty Brass, Stainless 1/8" coupler from the proven Fo...

    View full details
    $ 14.29
    $ 14.29 - $ 14.29
    $ 14.29
    $ 11.39
    $ 11.39 - $ 11.39
    $ 11.39
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 13.59
    $ 13.59 - $ 13.59
    $ 13.59
    $ 10.89
    $ 10.89 - $ 10.89
    $ 10.89

    Foster 2702H, 1/8" 2 Series Coupler x 1/4" Female NPT, Heavy-Duty Brass, Steel (Heat)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 2702H is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster ...

    View full details
    $ 13.59
    $ 13.59 - $ 13.59
    $ 13.59
    $ 10.89
    $ 10.89 - $ 10.89
    $ 10.89
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 15.49
    $ 15.49 - $ 15.49
    $ 15.49
    $ 12.39
    $ 12.39 - $ 12.39
    $ 12.39

    Foster BL2702, 1/8" 2 Series Coupler x 1/4" Female NPT, Heavy-Duty Brass, Steel (Ball Lock)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster BL2702 is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster...

    View full details
    $ 15.49
    $ 15.49 - $ 15.49
    $ 15.49
    $ 12.39
    $ 12.39 - $ 12.39
    $ 12.39
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 12.09
    $ 12.09 - $ 12.09
    $ 12.09
    $ 9.69
    $ 9.69 - $ 9.69
    $ 9.69

    Foster 2702, 1/8" 2 Series Coupler x 1/4" Female NPT, Heavy-Duty Brass, Steel

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 2702 is a Heavy-Duty Brass, Steel 1/8" coupler from the proven Foster 2...

    View full details
    $ 12.09
    $ 12.09 - $ 12.09
    $ 12.09
    $ 9.69
    $ 9.69 - $ 9.69
    $ 9.69
    Save 20% Save %
  • Foster PD13-4, 3/8" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 4 Series, Steel
    Save 20% Save %
    $ 13.19
    $ 13.19 - $ 13.19
    $ 13.19
    $ 10.59
    $ 10.59 - $ 10.59
    $ 10.59

    Foster 2302W, 1/8" 2 Series Coupler x 1/8" Female NPT, Heavy-Duty Brass, Stainless (Water)

    In stock

    Dependable, leak-free connections for air and light fluid lines. The Foster 2302W is a Heavy-Duty Brass, Stainless 1/8" coupler from the proven Fos...

    View full details
    $ 13.19
    $ 13.19 - $ 13.19
    $ 13.19
    $ 10.59
    $ 10.59 - $ 10.59
    $ 10.59
    Save 20% Save %