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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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$ 140.00
$ 140.00 - $ 140.00
$ 140.00
$ 112.00
$ 112.00 - $ 112.00
$ 112.00

Foster 55-5, 5 Series, Industrial Plug, 1/2" Female NPT, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 55-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 140.00
$ 140.00 - $ 140.00
$ 140.00
$ 112.00
$ 112.00 - $ 112.00
$ 112.00
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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 %
$ 310.00
$ 310.00 - $ 310.00
$ 310.00
$ 248.00
$ 248.00 - $ 248.00
$ 248.00

Foster 55-5S/S, 1/2" Industrial Plug x 1/2" Female NPT, 5 Series, 303 Stainless

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 55-5S/S is a 303 Stainless 1/2" industrial plug from the Foster ...

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$ 310.00
$ 310.00 - $ 310.00
$ 310.00
$ 248.00
$ 248.00 - $ 248.00
$ 248.00
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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 %
$ 561.00
$ 561.00 - $ 561.00
$ 561.00
$ 450.00
$ 450.00 - $ 450.00
$ 450.00

Foster 5505, 1/2" Industrial Coupler x 3/4" Male NPT, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5505 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 561.00
$ 561.00 - $ 561.00
$ 561.00
$ 450.00
$ 450.00 - $ 450.00
$ 450.00
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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 %
$ 255.00
$ 255.00 - $ 255.00
$ 255.00
$ 204.00
$ 204.00 - $ 204.00
$ 204.00

Foster 56-5, 1/2" Industrial Plug x 3/4" Male NPT, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 56-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 255.00
$ 255.00 - $ 255.00
$ 255.00
$ 204.00
$ 204.00 - $ 204.00
$ 204.00
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$ 255.00
$ 255.00 - $ 255.00
$ 255.00
$ 204.00
$ 204.00 - $ 204.00
$ 204.00

Foster 56-5, 5 Series, Industrial Plug, 3/4" Male NPT, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 56-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 255.00
$ 255.00 - $ 255.00
$ 255.00
$ 204.00
$ 204.00 - $ 204.00
$ 204.00
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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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$ 416.00
$ 416.00 - $ 416.00
$ 416.00
$ 333.00
$ 333.00 - $ 333.00
$ 333.00

Foster 56-5S/S, 1/2" Industrial Plug x 3/4" Male NPT, 5 Series, 303 Stainless

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 56-5S/S is a 303 Stainless 1/2" industrial plug from the Foster ...

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$ 416.00
$ 416.00 - $ 416.00
$ 416.00
$ 333.00
$ 333.00 - $ 333.00
$ 333.00
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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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$ 611.00
$ 611.00 - $ 611.00
$ 611.00
$ 489.00
$ 489.00 - $ 489.00
$ 489.00

Foster 5605, 1/2" Industrial Coupler x 1/4" Hose ID, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5605 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 611.00
$ 611.00 - $ 611.00
$ 611.00
$ 489.00
$ 489.00 - $ 489.00
$ 489.00
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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 %
$ 248.00
$ 248.00 - $ 248.00
$ 248.00
$ 198.00
$ 198.00 - $ 198.00
$ 198.00

Foster 57-5, 1/2" Industrial Plug x 3/4" Female NPT, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 57-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 248.00
$ 248.00 - $ 248.00
$ 248.00
$ 198.00
$ 198.00 - $ 198.00
$ 198.00
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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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$ 597.00
$ 597.00 - $ 597.00
$ 597.00
$ 478.00
$ 478.00 - $ 478.00
$ 478.00

Foster 5705, 1/2" Industrial Coupler x 3/8" Hose ID, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5705 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 597.00
$ 597.00 - $ 597.00
$ 597.00
$ 478.00
$ 478.00 - $ 478.00
$ 478.00
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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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$ 660.00
$ 660.00 - $ 660.00
$ 660.00
$ 529.00
$ 529.00 - $ 529.00
$ 529.00

Foster 5705H, 1/2" Industrial Coupler x 3/8" Hose ID, 5 Series, Heat/Viton, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5705H is a Brass/Steel 1/2" industrial coupler from the Foster 5...

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$ 660.00
$ 660.00 - $ 660.00
$ 660.00
$ 529.00
$ 529.00 - $ 529.00
$ 529.00
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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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$ 597.00
$ 597.00 - $ 597.00
$ 597.00
$ 478.00
$ 478.00 - $ 478.00
$ 478.00

Foster 5805, 1/2" Industrial Coupler x 1/2" Hose ID, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5805 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 597.00
$ 597.00 - $ 597.00
$ 597.00
$ 478.00
$ 478.00 - $ 478.00
$ 478.00
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$ 597.00
$ 597.00 - $ 597.00
$ 597.00
$ 478.00
$ 478.00 - $ 478.00
$ 478.00

Foster 5805, 5 Series, Industrial Coupler, Automatic, 1/2" Hose Barb, Brass, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5805 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 597.00
$ 597.00 - $ 597.00
$ 597.00
$ 478.00
$ 478.00 - $ 478.00
$ 478.00
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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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$ 627.00
$ 627.00 - $ 627.00
$ 627.00
$ 501.00
$ 501.00 - $ 501.00
$ 501.00

Foster 5805H, 1/2" Industrial Coupler x 1/2" Hose ID, 5 Series, Heat/Viton, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5805H is a Brass/Steel 1/2" industrial coupler from the Foster 5...

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$ 627.00
$ 627.00 - $ 627.00
$ 627.00
$ 501.00
$ 501.00 - $ 501.00
$ 501.00
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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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$ 738.00
$ 738.00 - $ 738.00
$ 738.00
$ 591.00
$ 591.00 - $ 591.00
$ 591.00

Foster 5805HW, 1/2" Industrial Coupler x 1/2" Hose ID, 5 Series, Hot Water/Viton, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5805HW is a Brass/SS 1/2" industrial coupler from the Foster 5 S...

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$ 738.00
$ 738.00 - $ 738.00
$ 738.00
$ 591.00
$ 591.00 - $ 591.00
$ 591.00
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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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$ 710.00
$ 710.00 - $ 710.00
$ 710.00
$ 568.00
$ 568.00 - $ 568.00
$ 568.00

Foster 5805W, 1/2" Industrial Coupler x 1/2" Hose ID, 5 Series, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5805W is a Brass/SS 1/2" industrial coupler from the Foster 5 Se...

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$ 710.00
$ 710.00 - $ 710.00
$ 710.00
$ 568.00
$ 568.00 - $ 568.00
$ 568.00
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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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$ 190.00
$ 190.00 - $ 190.00
$ 190.00
$ 152.00
$ 152.00 - $ 152.00
$ 152.00

Foster 59-5, 1/2" Industrial Plug x 3/8" Hose ID, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 59-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 190.00
$ 190.00 - $ 190.00
$ 190.00
$ 152.00
$ 152.00 - $ 152.00
$ 152.00
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$ 190.00
$ 190.00 - $ 190.00
$ 190.00
$ 152.00
$ 152.00 - $ 152.00
$ 152.00

Foster 59-5, 5 Series, Industrial Plug, 3/8" Hose Barb, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 59-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 190.00
$ 190.00 - $ 190.00
$ 190.00
$ 152.00
$ 152.00 - $ 152.00
$ 152.00
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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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$ 275.00
$ 275.00 - $ 275.00
$ 275.00
$ 220.00
$ 220.00 - $ 220.00
$ 220.00

Foster 59-5B, 1/2" Industrial Plug x 3/8" Hose ID, 5 Series, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 59-5B is a Brass 1/2" industrial plug from the Foster 5 Series —...

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$ 275.00
$ 275.00 - $ 275.00
$ 275.00
$ 220.00
$ 220.00 - $ 220.00
$ 220.00
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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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$ 604.00
$ 604.00 - $ 604.00
$ 604.00
$ 483.00
$ 483.00 - $ 483.00
$ 483.00

Foster 5905, 1/2" Industrial Coupler x 3/4" Hose ID, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5905 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 604.00
$ 604.00 - $ 604.00
$ 604.00
$ 483.00
$ 483.00 - $ 483.00
$ 483.00
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$ 604.00
$ 604.00 - $ 604.00
$ 604.00
$ 483.00
$ 483.00 - $ 483.00
$ 483.00

Foster 5905, 5 Series, Industrial Coupler, Automatic, 3/4" Hose Barb, Brass, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5905 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 604.00
$ 604.00 - $ 604.00
$ 604.00
$ 483.00
$ 483.00 - $ 483.00
$ 483.00
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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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$ 713.00
$ 713.00 - $ 713.00
$ 713.00
$ 572.00
$ 572.00 - $ 572.00
$ 572.00

Foster 5905W, 1/2" Industrial Coupler x 3/4" Hose ID, 5 Series, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5905W is a Brass/SS 1/2" industrial coupler from the Foster 5 Se...

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$ 713.00
$ 713.00 - $ 713.00
$ 713.00
$ 572.00
$ 572.00 - $ 572.00
$ 572.00
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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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$ 124.00
$ 124.00 - $ 124.00
$ 124.00
$ 99.00
$ 99.00 - $ 99.00
$ 99.00

Foster 60-5, 1/2" Industrial Plug x 1/2" Hose ID, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 60-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 124.00
$ 124.00 - $ 124.00
$ 124.00
$ 99.00
$ 99.00 - $ 99.00
$ 99.00
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Save 20% Save %
$ 124.00
$ 124.00 - $ 124.00
$ 124.00
$ 99.00
$ 99.00 - $ 99.00
$ 99.00

Foster 60-5, 5 Series, Industrial Plug, 1/2" Hose Barb, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 60-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 124.00
$ 124.00 - $ 124.00
$ 124.00
$ 99.00
$ 99.00 - $ 99.00
$ 99.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 19% Save %
$ 216.00
$ 216.00 - $ 216.00
$ 216.00
$ 174.00
$ 174.00 - $ 174.00
$ 174.00

Foster 60-5B, 1/2" Industrial Plug x 1/2" Hose ID, 5 Series, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 60-5B is a Brass 1/2" industrial plug from the Foster 5 Series —...

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$ 216.00
$ 216.00 - $ 216.00
$ 216.00
$ 174.00
$ 174.00 - $ 174.00
$ 174.00
Save 19% Save %

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