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Foster 5 Series Couplers

The Foster 5 Series is the 1/2" body industrial interchange, a high-flow air coupler size for shop and industrial systems. This collection includes 5 Series couplers and plugs in brass, steel, and stainless with NPT, hose barb, push-on, and reusable terminations. Filter by thread, material, and coupler or plug to match your line.

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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 54.59
$ 54.59 - $ 54.59
$ 54.59
$ 43.69
$ 43.69 - $ 43.69
$ 43.69

Foster BLSP13-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 1/2" ID x 13/16" OD, 5 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster BLSP13-5 is a Brass/Steel 1/2" industrial coupler from the Foste...

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$ 54.59
$ 54.59 - $ 54.59
$ 54.59
$ 43.69
$ 43.69 - $ 43.69
$ 43.69
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 59.09
$ 59.09 - $ 59.09
$ 59.09
$ 47.29
$ 47.29 - $ 47.29
$ 47.29

Foster BLSP15-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 1/2" ID x 7/8" OD, 5 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster BLSP15-5 is a Brass/Steel 1/2" industrial coupler from the Foste...

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$ 59.09
$ 59.09 - $ 59.09
$ 59.09
$ 47.29
$ 47.29 - $ 47.29
$ 47.29
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 39.49
$ 39.49 - $ 39.49
$ 39.49
$ 31.59
$ 31.59 - $ 31.59
$ 31.59

Foster FM1815, 1/2" Industrial Coupler x 1/2" Push-On Hose Stem, 5 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM1815 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 39.49
$ 39.49 - $ 39.49
$ 39.49
$ 31.59
$ 31.59 - $ 31.59
$ 31.59
Save 20% Save %
Save 20% Save %
$ 39.49
$ 39.49 - $ 39.49
$ 39.49
$ 31.59
$ 31.59 - $ 31.59
$ 31.59

Foster FM1815, 5 Series, Industrial Coupler, Automatic, 1/2" Push-On Hose Barb, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM1815 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 39.49
$ 39.49 - $ 39.49
$ 39.49
$ 31.59
$ 31.59 - $ 31.59
$ 31.59
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 40.89
$ 40.89 - $ 40.89
$ 40.89
$ 32.79
$ 32.79 - $ 32.79
$ 32.79

Foster FM4015, 1/2" Industrial Coupler x 1/4" Female NPT, 5 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM4015 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 40.89
$ 40.89 - $ 40.89
$ 40.89
$ 32.79
$ 32.79 - $ 32.79
$ 32.79
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 41.79
$ 41.79 - $ 41.79
$ 41.79
$ 33.39
$ 33.39 - $ 33.39
$ 33.39

Foster FM4905, 1/2" Industrial Coupler x 1/4" Male NPT, 5 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM4905 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 41.79
$ 41.79 - $ 41.79
$ 41.79
$ 33.39
$ 33.39 - $ 33.39
$ 33.39
Save 20% Save %
Save 20% Save %
$ 41.79
$ 41.79 - $ 41.79
$ 41.79
$ 33.39
$ 33.39 - $ 33.39
$ 33.39

Foster FM4905, 5 Series, Industrial Coupler, Automatic, 1/4" Hose Barb, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM4905 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 41.79
$ 41.79 - $ 41.79
$ 41.79
$ 33.39
$ 33.39 - $ 33.39
$ 33.39
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 42.19
$ 42.19 - $ 42.19
$ 42.19
$ 33.69
$ 33.69 - $ 33.69
$ 33.69

Foster FM5005, 1/2" Industrial Coupler x 3/8" Female NPT, 5 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5005 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 42.19
$ 42.19 - $ 42.19
$ 42.19
$ 33.69
$ 33.69 - $ 33.69
$ 33.69
Save 20% Save %
Save 20% Save %
$ 42.19
$ 42.19 - $ 42.19
$ 42.19
$ 33.69
$ 33.69 - $ 33.69
$ 33.69

Foster FM5005, 5 Series, Industrial Coupler, Automatic, 3/8" Female NPT, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5005 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 42.19
$ 42.19 - $ 42.19
$ 42.19
$ 33.69
$ 33.69 - $ 33.69
$ 33.69
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 46.39
$ 46.39 - $ 46.39
$ 46.39
$ 37.19
$ 37.19 - $ 37.19
$ 37.19

Foster FM5005H, 1/2" Industrial Coupler x 3/8" Female NPT, 5 Series, Automatic, Heat/Viton, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5005H is a Brass 1/2" industrial coupler from the Foster 5 Ser...

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$ 46.39
$ 46.39 - $ 46.39
$ 46.39
$ 37.19
$ 37.19 - $ 37.19
$ 37.19
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 50.99
$ 50.99 - $ 50.99
$ 50.99
$ 40.79
$ 40.79 - $ 40.79
$ 40.79

Foster FM5005S, 1/2" Industrial Coupler x 3/8" Female NPT, 5 Series, Automatic, Steam/EPDM, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5005S is a Brass/SS 1/2" industrial coupler from the Foster 5 ...

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$ 50.99
$ 50.99 - $ 50.99
$ 50.99
$ 40.79
$ 40.79 - $ 40.79
$ 40.79
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 47.29
$ 47.29 - $ 47.29
$ 47.29
$ 37.79
$ 37.79 - $ 37.79
$ 37.79

Foster FM5005W, 1/2" Industrial Coupler x 3/8" Female NPT, 5 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5005W is a Brass/SS 1/2" industrial coupler from the Foster 5 ...

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$ 47.29
$ 47.29 - $ 47.29
$ 47.29
$ 37.79
$ 37.79 - $ 37.79
$ 37.79
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 42.59
$ 42.59 - $ 42.59
$ 42.59
$ 34.09
$ 34.09 - $ 34.09
$ 34.09

Foster FM5105, 1/2" Industrial Coupler x 3/8" Male NPT, 5 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5105 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 42.59
$ 42.59 - $ 42.59
$ 42.59
$ 34.09
$ 34.09 - $ 34.09
$ 34.09
Save 20% Save %
Save 20% Save %
$ 42.59
$ 42.59 - $ 42.59
$ 42.59
$ 34.09
$ 34.09 - $ 34.09
$ 34.09

Foster FM5105, 5 Series, Industrial Coupler, Automatic, 3/8" Male NPT, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5105 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 42.59
$ 42.59 - $ 42.59
$ 42.59
$ 34.09
$ 34.09 - $ 34.09
$ 34.09
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 41.99
$ 41.99 - $ 41.99
$ 41.99
$ 33.59
$ 33.59 - $ 33.59
$ 33.59

Foster FM5205, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5205 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 41.99
$ 41.99 - $ 41.99
$ 41.99
$ 33.59
$ 33.59 - $ 33.59
$ 33.59
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 47.69
$ 47.69 - $ 47.69
$ 47.69
$ 38.09
$ 38.09 - $ 38.09
$ 38.09

Foster FM5205H, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, Automatic, Heat/Viton, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5205H is a Brass 1/2" industrial coupler from the Foster 5 Ser...

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$ 47.69
$ 47.69 - $ 47.69
$ 47.69
$ 38.09
$ 38.09 - $ 38.09
$ 38.09
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 43.19
$ 43.19 - $ 43.19
$ 43.19
$ 34.49
$ 34.49 - $ 34.49
$ 34.49

Foster FM5205LV, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, Automatic, Less Valve, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5205LV is a Brass 1/2" industrial coupler from the Foster 5 Se...

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$ 43.19
$ 43.19 - $ 43.19
$ 43.19
$ 34.49
$ 34.49 - $ 34.49
$ 34.49
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 52.09
$ 52.09 - $ 52.09
$ 52.09
$ 41.69
$ 41.69 - $ 41.69
$ 41.69

Foster FM5205S, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, Automatic, Steam/EPDM, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5205S is a Brass/SS 1/2" industrial coupler from the Foster 5 ...

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$ 52.09
$ 52.09 - $ 52.09
$ 52.09
$ 41.69
$ 41.69 - $ 41.69
$ 41.69
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 48.29
$ 48.29 - $ 48.29
$ 48.29
$ 38.59
$ 38.59 - $ 38.59
$ 38.59

Foster FM5205W, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5205W is a Brass/SS 1/2" industrial coupler from the Foster 5 ...

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$ 48.29
$ 48.29 - $ 48.29
$ 48.29
$ 38.59
$ 38.59 - $ 38.59
$ 38.59
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 43.79
$ 43.79 - $ 43.79
$ 43.79
$ 34.99
$ 34.99 - $ 34.99
$ 34.99

Foster FM5305, 1/2" Industrial Coupler x 1/2" Male NPT, 5 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5305 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 43.79
$ 43.79 - $ 43.79
$ 43.79
$ 34.99
$ 34.99 - $ 34.99
$ 34.99
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 50.69
$ 50.69 - $ 50.69
$ 50.69
$ 40.59
$ 40.59 - $ 40.59
$ 40.59

Foster FM5305S, 1/2" Industrial Coupler x 1/2" Male NPT, 5 Series, Automatic, Steam/EPDM, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5305S is a Brass/SS 1/2" industrial coupler from the Foster 5 ...

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$ 50.69
$ 50.69 - $ 50.69
$ 50.69
$ 40.59
$ 40.59 - $ 40.59
$ 40.59
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 48.69
$ 48.69 - $ 48.69
$ 48.69
$ 38.99
$ 38.99 - $ 38.99
$ 38.99

Foster FM5305W, 1/2" Industrial Coupler x 1/2" Male NPT, 5 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5305W is a Brass/SS 1/2" industrial coupler from the Foster 5 ...

View full details
$ 48.69
$ 48.69 - $ 48.69
$ 48.69
$ 38.99
$ 38.99 - $ 38.99
$ 38.99
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 43.29
$ 43.29 - $ 43.29
$ 43.29
$ 34.69
$ 34.69 - $ 34.69
$ 34.69

Foster FM5405, 1/2" Industrial Coupler x 3/4" Female NPT, 5 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5405 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 43.29
$ 43.29 - $ 43.29
$ 43.29
$ 34.69
$ 34.69 - $ 34.69
$ 34.69
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 49.09
$ 49.09 - $ 49.09
$ 49.09
$ 39.29
$ 39.29 - $ 39.29
$ 39.29

Foster FM5405W, 1/2" Industrial Coupler x 3/4" Female NPT, 5 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5405W is a Brass/SS 1/2" industrial coupler from the Foster 5 ...

View full details
$ 49.09
$ 49.09 - $ 49.09
$ 49.09
$ 39.29
$ 39.29 - $ 39.29
$ 39.29
Save 20% Save %

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