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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 %
$ 326.00
$ 326.00 - $ 326.00
$ 326.00
$ 260.00
$ 260.00 - $ 260.00
$ 260.00

Foster PD7-5, 1/2" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 5/8" OD, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster PD7-5 is a Steel 1/2" industrial plug from the Foster 5 Series —...

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$ 326.00
$ 326.00 - $ 326.00
$ 326.00
$ 260.00
$ 260.00 - $ 260.00
$ 260.00
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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 %
$ 326.00
$ 326.00 - $ 326.00
$ 326.00
$ 262.00
$ 262.00 - $ 262.00
$ 262.00

Foster PD9-5, 1/2" Industrial Plug x Reusable Hose Fitting, 3/8" ID x 11/16" OD, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster PD9-5 is a Steel 1/2" industrial plug from the Foster 5 Series —...

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$ 326.00
$ 326.00 - $ 326.00
$ 326.00
$ 262.00
$ 262.00 - $ 262.00
$ 262.00
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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 %
$ 639.00
$ 639.00 - $ 639.00
$ 639.00
$ 510.00
$ 510.00 - $ 510.00
$ 510.00

Foster PP13-5, 1/2" Industrial Plug x Reusable Hose Fitting, 1/2" ID x 13/16" OD, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster PP13-5 is a Steel 1/2" industrial plug from the Foster 5 Series ...

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$ 639.00
$ 639.00 - $ 639.00
$ 639.00
$ 510.00
$ 510.00 - $ 510.00
$ 510.00
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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 %
$ 681.00
$ 681.00 - $ 681.00
$ 681.00
$ 545.00
$ 545.00 - $ 545.00
$ 545.00

Foster PP15-5, 1/2" Industrial Plug x Reusable Hose Fitting, 1/2" ID x 7/8" OD, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster PP15-5 is a Steel 1/2" industrial plug from the Foster 5 Series ...

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$ 681.00
$ 681.00 - $ 681.00
$ 681.00
$ 545.00
$ 545.00 - $ 545.00
$ 545.00
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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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$ 870.00
$ 870.00 - $ 870.00
$ 870.00
$ 696.00
$ 696.00 - $ 696.00
$ 696.00

Foster PP17-5, 1/2" Industrial Plug x Reusable Hose Fitting, 1/2" ID x 15/16" OD, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster PP17-5 is a Steel 1/2" industrial plug from the Foster 5 Series ...

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$ 870.00
$ 870.00 - $ 870.00
$ 870.00
$ 696.00
$ 696.00 - $ 696.00
$ 696.00
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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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$ 548.00
$ 548.00 - $ 548.00
$ 548.00
$ 439.00
$ 439.00 - $ 439.00
$ 439.00

Foster PP19-5, 1/2" Industrial Plug x Reusable Hose Fitting, 1/2" ID x 1" OD, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster PP19-5 is a Steel 1/2" industrial plug from the Foster 5 Series ...

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$ 548.00
$ 548.00 - $ 548.00
$ 548.00
$ 439.00
$ 439.00 - $ 439.00
$ 439.00
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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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$ 651.00
$ 651.00 - $ 651.00
$ 651.00
$ 520.00
$ 520.00 - $ 520.00
$ 520.00

Foster SD11-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 3/4" OD, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SD11-5 is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 651.00
$ 651.00 - $ 651.00
$ 651.00
$ 520.00
$ 520.00 - $ 520.00
$ 520.00
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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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$ 679.00
$ 679.00 - $ 679.00
$ 679.00
$ 543.00
$ 543.00 - $ 543.00
$ 543.00

Foster SD13-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 13/16" OD, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SD13-5 is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 679.00
$ 679.00 - $ 679.00
$ 679.00
$ 543.00
$ 543.00 - $ 543.00
$ 543.00
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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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$ 637.00
$ 637.00 - $ 637.00
$ 637.00
$ 510.00
$ 510.00 - $ 510.00
$ 510.00

Foster SD7-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 5/8" OD, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SD7-5 is a Brass/Steel 1/2" industrial coupler from the Foster 5...

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$ 637.00
$ 637.00 - $ 637.00
$ 637.00
$ 510.00
$ 510.00 - $ 510.00
$ 510.00
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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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$ 730.00
$ 730.00 - $ 730.00
$ 730.00
$ 584.00
$ 584.00 - $ 584.00
$ 584.00

Foster SD7-5W, 1/2" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 5/8" OD, 5 Series, Water, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SD7-5W is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 730.00
$ 730.00 - $ 730.00
$ 730.00
$ 584.00
$ 584.00 - $ 584.00
$ 584.00
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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 %
$ 644.00
$ 644.00 - $ 644.00
$ 644.00
$ 515.00
$ 515.00 - $ 515.00
$ 515.00

Foster SD9-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 11/16" OD, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SD9-5 is a Brass/Steel 1/2" industrial coupler from the Foster 5...

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$ 644.00
$ 644.00 - $ 644.00
$ 644.00
$ 515.00
$ 515.00 - $ 515.00
$ 515.00
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 %
$ 737.00
$ 737.00 - $ 737.00
$ 737.00
$ 589.00
$ 589.00 - $ 589.00
$ 589.00

Foster SD9-5W, 1/2" Industrial Coupler x Reusable Hose Fitting, 3/8" ID x 11/16" OD, 5 Series, Water, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SD9-5W is a Brass/Steel 1/2" industrial coupler from the Foster ...

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$ 737.00
$ 737.00 - $ 737.00
$ 737.00
$ 589.00
$ 589.00 - $ 589.00
$ 589.00
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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$ 823.00
$ 823.00 - $ 823.00
$ 823.00
$ 660.00
$ 660.00 - $ 660.00
$ 660.00

Foster SL4015, 1/2" Industrial Coupler x 1/4" Female NPT, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL4015 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 823.00
$ 823.00 - $ 823.00
$ 823.00
$ 660.00
$ 660.00 - $ 660.00
$ 660.00
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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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$ 811.00
$ 811.00 - $ 811.00
$ 811.00
$ 650.00
$ 650.00 - $ 650.00
$ 650.00

Foster SL4905, 1/2" Industrial Coupler x 1/4" Male NPT, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL4905 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 811.00
$ 811.00 - $ 811.00
$ 811.00
$ 650.00
$ 650.00 - $ 650.00
$ 650.00
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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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$ 818.00
$ 818.00 - $ 818.00
$ 818.00
$ 655.00
$ 655.00 - $ 655.00
$ 655.00

Foster SL5005, 1/2" Industrial Coupler x 3/8" Female NPT, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL5005 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 818.00
$ 818.00 - $ 818.00
$ 818.00
$ 655.00
$ 655.00 - $ 655.00
$ 655.00
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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$ 829.00
$ 829.00 - $ 829.00
$ 829.00
$ 663.00
$ 663.00 - $ 663.00
$ 663.00

Foster SL5105, 1/2" Industrial Coupler x 3/8" Male NPT, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL5105 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 829.00
$ 829.00 - $ 829.00
$ 829.00
$ 663.00
$ 663.00 - $ 663.00
$ 663.00
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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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$ 836.00
$ 836.00 - $ 836.00
$ 836.00
$ 668.00
$ 668.00 - $ 668.00
$ 668.00

Foster SL5205, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL5205 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 836.00
$ 836.00 - $ 836.00
$ 836.00
$ 668.00
$ 668.00 - $ 668.00
$ 668.00
Save 20% Save %
Save 20% Save %
$ 836.00
$ 836.00 - $ 836.00
$ 836.00
$ 668.00
$ 668.00 - $ 668.00
$ 668.00

Foster SL5205, 5 Series, Industrial Coupler, Automatic, 1/2" Female NPT, Brass, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL5205 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 836.00
$ 836.00 - $ 836.00
$ 836.00
$ 668.00
$ 668.00 - $ 668.00
$ 668.00
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 %
$ 842.00
$ 842.00 - $ 842.00
$ 842.00
$ 674.00
$ 674.00 - $ 674.00
$ 674.00

Foster SL5305, 1/2" Industrial Coupler x 1/2" Male NPT, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL5305 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 842.00
$ 842.00 - $ 842.00
$ 842.00
$ 674.00
$ 674.00 - $ 674.00
$ 674.00
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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$ 884.00
$ 884.00 - $ 884.00
$ 884.00
$ 706.00
$ 706.00 - $ 706.00
$ 706.00

Foster SL5405, 1/2" Industrial Coupler x 3/4" Female NPT, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL5405 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 884.00
$ 884.00 - $ 884.00
$ 884.00
$ 706.00
$ 706.00 - $ 706.00
$ 706.00
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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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$ 853.00
$ 853.00 - $ 853.00
$ 853.00
$ 682.00
$ 682.00 - $ 682.00
$ 682.00

Foster SL5505, 1/2" Industrial Coupler x 3/4" Male NPT, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL5505 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 853.00
$ 853.00 - $ 853.00
$ 853.00
$ 682.00
$ 682.00 - $ 682.00
$ 682.00
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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$ 891.00
$ 891.00 - $ 891.00
$ 891.00
$ 712.00
$ 712.00 - $ 712.00
$ 712.00

Foster SL5605, 1/2" Industrial Coupler x 1/4" Hose ID, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL5605 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 891.00
$ 891.00 - $ 891.00
$ 891.00
$ 712.00
$ 712.00 - $ 712.00
$ 712.00
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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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$ 860.00
$ 860.00 - $ 860.00
$ 860.00
$ 687.00
$ 687.00 - $ 687.00
$ 687.00

Foster SL5705, 1/2" Industrial Coupler x 3/8" Hose ID, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL5705 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 860.00
$ 860.00 - $ 860.00
$ 860.00
$ 687.00
$ 687.00 - $ 687.00
$ 687.00
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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$ 863.00
$ 863.00 - $ 863.00
$ 863.00
$ 691.00
$ 691.00 - $ 691.00
$ 691.00

Foster SL5805, 1/2" Industrial Coupler x 1/2" Hose ID, 5 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL5805 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

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$ 863.00
$ 863.00 - $ 863.00
$ 863.00
$ 691.00
$ 691.00 - $ 691.00
$ 691.00
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