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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 %
$ 49.09
$ 49.09 - $ 49.09
$ 49.09
$ 39.29
$ 39.29 - $ 39.29
$ 39.29

Foster SL5805H, 1/2" Industrial Coupler x 1/2" Hose ID, 5 Series, Automatic Sleeve Lock, Heat/Viton, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL5805H is a Brass 1/2" industrial coupler from the Foster 5 Ser...

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$ 49.09
$ 49.09 - $ 49.09
$ 49.09
$ 39.29
$ 39.29 - $ 39.29
$ 39.29
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 %
$ 50.69
$ 50.69 - $ 50.69
$ 50.69
$ 40.59
$ 40.59 - $ 40.59
$ 40.59

Foster SL5905, 1/2" Industrial Coupler x 3/4" Hose ID, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL5905 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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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 %
$ 54.59
$ 54.59 - $ 54.59
$ 54.59
$ 43.69
$ 43.69 - $ 43.69
$ 43.69

Foster SLSD11-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 3/4" OD, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SLSD11-5 is a Brass 1/2" industrial coupler from the Foster 5 Se...

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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 %
$ 55.49
$ 55.49 - $ 55.49
$ 55.49
$ 44.39
$ 44.39 - $ 44.39
$ 44.39

Foster SLSD13-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SLSD13-5 is a Brass 1/2" industrial coupler from the Foster 5 Se...

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$ 55.49
$ 55.49 - $ 55.49
$ 55.49
$ 44.39
$ 44.39 - $ 44.39
$ 44.39
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 %
$ 50.09
$ 50.09 - $ 50.09
$ 50.09
$ 40.09
$ 40.09 - $ 40.09
$ 40.09

Foster SLSD7-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 5/8" OD, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SLSD7-5 is a Brass 1/2" industrial coupler from the Foster 5 Ser...

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$ 50.09
$ 50.09 - $ 50.09
$ 50.09
$ 40.09
$ 40.09 - $ 40.09
$ 40.09
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 %
$ 53.59
$ 53.59 - $ 53.59
$ 53.59
$ 42.89
$ 42.89 - $ 42.89
$ 42.89

Foster SLSD9-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 11/16" OD, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SLSD9-5 is a Brass 1/2" industrial coupler from the Foster 5 Ser...

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$ 53.59
$ 53.59 - $ 53.59
$ 53.59
$ 42.89
$ 42.89 - $ 42.89
$ 42.89
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 %
$ 66.69
$ 66.69 - $ 66.69
$ 66.69
$ 53.39
$ 53.39 - $ 53.39
$ 53.39

Foster SLSP13-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 1/2" ID x 13/16" OD, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SLSP13-5 is a Brass 1/2" industrial coupler from the Foster 5 Se...

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$ 66.69
$ 66.69 - $ 66.69
$ 66.69
$ 53.39
$ 53.39 - $ 53.39
$ 53.39
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 %
$ 68.19
$ 68.19 - $ 68.19
$ 68.19
$ 54.49
$ 54.49 - $ 54.49
$ 54.49

Foster SLSP15-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 1/2" ID x 7/8" OD, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SLSP15-5 is a Brass 1/2" industrial coupler from the Foster 5 Se...

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$ 68.19
$ 68.19 - $ 68.19
$ 68.19
$ 54.49
$ 54.49 - $ 54.49
$ 54.49
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 %
$ 70.49
$ 70.49 - $ 70.49
$ 70.49
$ 56.39
$ 56.39 - $ 56.39
$ 56.39

Foster SLSP17-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 1/2" ID x 15/16" OD, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SLSP17-5 is a Brass 1/2" industrial coupler from the Foster 5 Se...

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$ 70.49
$ 70.49 - $ 70.49
$ 70.49
$ 56.39
$ 56.39 - $ 56.39
$ 56.39
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 %
$ 72.79
$ 72.79 - $ 72.79
$ 72.79
$ 58.29
$ 58.29 - $ 58.29
$ 58.29

Foster SLSP19-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 1/2" ID x 1" OD, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SLSP19-5 is a Brass 1/2" industrial coupler from the Foster 5 Se...

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$ 72.79
$ 72.79 - $ 72.79
$ 72.79
$ 58.29
$ 58.29 - $ 58.29
$ 58.29
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 %
$ 47.99
$ 47.99 - $ 47.99
$ 47.99
$ 38.39
$ 38.39 - $ 38.39
$ 38.39

Foster SP13-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 1/2" ID x 13/16" OD, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SP13-5 is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 47.99
$ 47.99 - $ 47.99
$ 47.99
$ 38.39
$ 38.39 - $ 38.39
$ 38.39
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 %
$ 50.89
$ 50.89 - $ 50.89
$ 50.89
$ 40.79
$ 40.79 - $ 40.79
$ 40.79

Foster SP13-5W, 1/2" Industrial Coupler x Reusable Hose Fitting, 1/2" ID x 13/16" OD, 5 Series, Water, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SP13-5W is a Brass/Steel 1/2" industrial coupler from the Foster...

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$ 50.89
$ 50.89 - $ 50.89
$ 50.89
$ 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 %
$ 48.49
$ 48.49 - $ 48.49
$ 48.49
$ 38.79
$ 38.79 - $ 38.79
$ 38.79

Foster SP15-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 1/2" ID x 7/8" OD, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SP15-5 is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 48.49
$ 48.49 - $ 48.49
$ 48.49
$ 38.79
$ 38.79 - $ 38.79
$ 38.79
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 %
$ 52.49
$ 52.49 - $ 52.49
$ 52.49
$ 41.99
$ 41.99 - $ 41.99
$ 41.99

Foster SP17-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 1/2" ID x 15/16" OD, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SP17-5 is a Brass/Steel 1/2" industrial coupler from the Foster ...

View full details
$ 52.49
$ 52.49 - $ 52.49
$ 52.49
$ 41.99
$ 41.99 - $ 41.99
$ 41.99
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 %
$ 54.69
$ 54.69 - $ 54.69
$ 54.69
$ 43.79
$ 43.79 - $ 43.79
$ 43.79

Foster SP19-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 1/2" ID x 1" OD, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SP19-5 is a Brass/Steel 1/2" industrial coupler from the Foster ...

View full details
$ 54.69
$ 54.69 - $ 54.69
$ 54.69
$ 43.79
$ 43.79 - $ 43.79
$ 43.79
Save 20% Save %

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