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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 %
$ 967.00
$ 967.00 - $ 967.00
$ 967.00
$ 774.00
$ 774.00 - $ 774.00
$ 774.00

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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$ 967.00
$ 967.00 - $ 967.00
$ 967.00
$ 774.00
$ 774.00 - $ 774.00
$ 774.00
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 %
$ 1,046.00
$ 1,046.00 - $ 1,046.00
$ 1,046.00
$ 838.00
$ 838.00 - $ 838.00
$ 838.00

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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$ 1,046.00
$ 1,046.00 - $ 1,046.00
$ 1,046.00
$ 838.00
$ 838.00 - $ 838.00
$ 838.00
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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 %
$ 699.00
$ 699.00 - $ 699.00
$ 699.00
$ 560.00
$ 560.00 - $ 560.00
$ 560.00

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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$ 699.00
$ 699.00 - $ 699.00
$ 699.00
$ 560.00
$ 560.00 - $ 560.00
$ 560.00
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Save 20% Save %
$ 699.00
$ 699.00 - $ 699.00
$ 699.00
$ 560.00
$ 560.00 - $ 560.00
$ 560.00

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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$ 699.00
$ 699.00 - $ 699.00
$ 699.00
$ 560.00
$ 560.00 - $ 560.00
$ 560.00
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 %
$ 724.00
$ 724.00 - $ 724.00
$ 724.00
$ 581.00
$ 581.00 - $ 581.00
$ 581.00

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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$ 724.00
$ 724.00 - $ 724.00
$ 724.00
$ 581.00
$ 581.00 - $ 581.00
$ 581.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 740.00
$ 740.00 - $ 740.00
$ 740.00
$ 591.00
$ 591.00 - $ 591.00
$ 591.00

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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$ 740.00
$ 740.00 - $ 740.00
$ 740.00
$ 591.00
$ 591.00 - $ 591.00
$ 591.00
Save 20% Save %
Save 20% Save %
$ 740.00
$ 740.00 - $ 740.00
$ 740.00
$ 591.00
$ 591.00 - $ 591.00
$ 591.00

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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$ 740.00
$ 740.00 - $ 740.00
$ 740.00
$ 591.00
$ 591.00 - $ 591.00
$ 591.00
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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$ 747.00
$ 747.00 - $ 747.00
$ 747.00
$ 597.00
$ 597.00 - $ 597.00
$ 597.00

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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$ 747.00
$ 747.00 - $ 747.00
$ 747.00
$ 597.00
$ 597.00 - $ 597.00
$ 597.00
Save 20% Save %
Save 20% Save %
$ 747.00
$ 747.00 - $ 747.00
$ 747.00
$ 597.00
$ 597.00 - $ 597.00
$ 597.00

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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$ 747.00
$ 747.00 - $ 747.00
$ 747.00
$ 597.00
$ 597.00 - $ 597.00
$ 597.00
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 %
$ 822.00
$ 822.00 - $ 822.00
$ 822.00
$ 659.00
$ 659.00 - $ 659.00
$ 659.00

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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$ 822.00
$ 822.00 - $ 822.00
$ 822.00
$ 659.00
$ 659.00 - $ 659.00
$ 659.00
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 %
$ 903.00
$ 903.00 - $ 903.00
$ 903.00
$ 722.00
$ 722.00 - $ 722.00
$ 722.00

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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$ 903.00
$ 903.00 - $ 903.00
$ 903.00
$ 722.00
$ 722.00 - $ 722.00
$ 722.00
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 %
$ 838.00
$ 838.00 - $ 838.00
$ 838.00
$ 669.00
$ 669.00 - $ 669.00
$ 669.00

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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$ 838.00
$ 838.00 - $ 838.00
$ 838.00
$ 669.00
$ 669.00 - $ 669.00
$ 669.00
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 %
$ 754.00
$ 754.00 - $ 754.00
$ 754.00
$ 604.00
$ 604.00 - $ 604.00
$ 604.00

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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$ 754.00
$ 754.00 - $ 754.00
$ 754.00
$ 604.00
$ 604.00 - $ 604.00
$ 604.00
Save 20% Save %
Save 20% Save %
$ 754.00
$ 754.00 - $ 754.00
$ 754.00
$ 604.00
$ 604.00 - $ 604.00
$ 604.00

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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$ 754.00
$ 754.00 - $ 754.00
$ 754.00
$ 604.00
$ 604.00 - $ 604.00
$ 604.00
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 %
$ 744.00
$ 744.00 - $ 744.00
$ 744.00
$ 595.00
$ 595.00 - $ 595.00
$ 595.00

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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$ 744.00
$ 744.00 - $ 744.00
$ 744.00
$ 595.00
$ 595.00 - $ 595.00
$ 595.00
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 %
$ 845.00
$ 845.00 - $ 845.00
$ 845.00
$ 675.00
$ 675.00 - $ 675.00
$ 675.00

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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$ 845.00
$ 845.00 - $ 845.00
$ 845.00
$ 675.00
$ 675.00 - $ 675.00
$ 675.00
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 %
$ 765.00
$ 765.00 - $ 765.00
$ 765.00
$ 611.00
$ 611.00 - $ 611.00
$ 611.00

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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$ 765.00
$ 765.00 - $ 765.00
$ 765.00
$ 611.00
$ 611.00 - $ 611.00
$ 611.00
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 %
$ 922.00
$ 922.00 - $ 922.00
$ 922.00
$ 738.00
$ 738.00 - $ 738.00
$ 738.00

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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$ 922.00
$ 922.00 - $ 922.00
$ 922.00
$ 738.00
$ 738.00 - $ 738.00
$ 738.00
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 %
$ 855.00
$ 855.00 - $ 855.00
$ 855.00
$ 684.00
$ 684.00 - $ 684.00
$ 684.00

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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$ 855.00
$ 855.00 - $ 855.00
$ 855.00
$ 684.00
$ 684.00 - $ 684.00
$ 684.00
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 %
$ 776.00
$ 776.00 - $ 776.00
$ 776.00
$ 620.00
$ 620.00 - $ 620.00
$ 620.00

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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$ 776.00
$ 776.00 - $ 776.00
$ 776.00
$ 620.00
$ 620.00 - $ 620.00
$ 620.00
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 %
$ 898.00
$ 898.00 - $ 898.00
$ 898.00
$ 719.00
$ 719.00 - $ 719.00
$ 719.00

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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$ 898.00
$ 898.00 - $ 898.00
$ 898.00
$ 719.00
$ 719.00 - $ 719.00
$ 719.00
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 %
$ 862.00
$ 862.00 - $ 862.00
$ 862.00
$ 691.00
$ 691.00 - $ 691.00
$ 691.00

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 ...

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$ 862.00
$ 862.00 - $ 862.00
$ 862.00
$ 691.00
$ 691.00 - $ 691.00
$ 691.00
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 %
$ 767.00
$ 767.00 - $ 767.00
$ 767.00
$ 614.00
$ 614.00 - $ 614.00
$ 614.00

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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$ 767.00
$ 767.00 - $ 767.00
$ 767.00
$ 614.00
$ 614.00 - $ 614.00
$ 614.00
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 %
$ 869.00
$ 869.00 - $ 869.00
$ 869.00
$ 696.00
$ 696.00 - $ 696.00
$ 696.00

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 ...

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$ 869.00
$ 869.00 - $ 869.00
$ 869.00
$ 696.00
$ 696.00 - $ 696.00
$ 696.00
Save 20% Save %

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