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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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$ 136.00
$ 136.00 - $ 136.00
$ 136.00
$ 109.00
$ 109.00 - $ 109.00
$ 109.00

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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$ 136.00
$ 136.00 - $ 136.00
$ 136.00
$ 109.00
$ 109.00 - $ 109.00
$ 109.00
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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 %
$ 302.00
$ 302.00 - $ 302.00
$ 302.00
$ 241.00
$ 241.00 - $ 241.00
$ 241.00

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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$ 302.00
$ 302.00 - $ 302.00
$ 302.00
$ 241.00
$ 241.00 - $ 241.00
$ 241.00
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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 %
$ 546.00
$ 546.00 - $ 546.00
$ 546.00
$ 438.00
$ 438.00 - $ 438.00
$ 438.00

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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$ 546.00
$ 546.00 - $ 546.00
$ 546.00
$ 438.00
$ 438.00 - $ 438.00
$ 438.00
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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 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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$ 248.00
$ 248.00 - $ 248.00
$ 248.00
$ 198.00
$ 198.00 - $ 198.00
$ 198.00
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$ 248.00
$ 248.00 - $ 248.00
$ 248.00
$ 198.00
$ 198.00 - $ 198.00
$ 198.00

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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$ 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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$ 405.00
$ 405.00 - $ 405.00
$ 405.00
$ 324.00
$ 324.00 - $ 324.00
$ 324.00

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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$ 405.00
$ 405.00 - $ 405.00
$ 405.00
$ 324.00
$ 324.00 - $ 324.00
$ 324.00
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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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$ 594.00
$ 594.00 - $ 594.00
$ 594.00
$ 476.00
$ 476.00 - $ 476.00
$ 476.00

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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$ 594.00
$ 594.00 - $ 594.00
$ 594.00
$ 476.00
$ 476.00 - $ 476.00
$ 476.00
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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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$ 241.00
$ 241.00 - $ 241.00
$ 241.00
$ 193.00
$ 193.00 - $ 193.00
$ 193.00

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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$ 241.00
$ 241.00 - $ 241.00
$ 241.00
$ 193.00
$ 193.00 - $ 193.00
$ 193.00
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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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$ 581.00
$ 581.00 - $ 581.00
$ 581.00
$ 465.00
$ 465.00 - $ 465.00
$ 465.00

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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$ 581.00
$ 581.00 - $ 581.00
$ 581.00
$ 465.00
$ 465.00 - $ 465.00
$ 465.00
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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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$ 643.00
$ 643.00 - $ 643.00
$ 643.00
$ 515.00
$ 515.00 - $ 515.00
$ 515.00

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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$ 643.00
$ 643.00 - $ 643.00
$ 643.00
$ 515.00
$ 515.00 - $ 515.00
$ 515.00
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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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$ 581.00
$ 581.00 - $ 581.00
$ 581.00
$ 465.00
$ 465.00 - $ 465.00
$ 465.00

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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$ 581.00
$ 581.00 - $ 581.00
$ 581.00
$ 465.00
$ 465.00 - $ 465.00
$ 465.00
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$ 581.00
$ 581.00 - $ 581.00
$ 581.00
$ 465.00
$ 465.00 - $ 465.00
$ 465.00

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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$ 581.00
$ 581.00 - $ 581.00
$ 581.00
$ 465.00
$ 465.00 - $ 465.00
$ 465.00
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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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$ 610.00
$ 610.00 - $ 610.00
$ 610.00
$ 488.00
$ 488.00 - $ 488.00
$ 488.00

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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$ 610.00
$ 610.00 - $ 610.00
$ 610.00
$ 488.00
$ 488.00 - $ 488.00
$ 488.00
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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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$ 718.00
$ 718.00 - $ 718.00
$ 718.00
$ 576.00
$ 576.00 - $ 576.00
$ 576.00

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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$ 718.00
$ 718.00 - $ 718.00
$ 718.00
$ 576.00
$ 576.00 - $ 576.00
$ 576.00
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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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$ 691.00
$ 691.00 - $ 691.00
$ 691.00
$ 553.00
$ 553.00 - $ 553.00
$ 553.00

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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$ 691.00
$ 691.00 - $ 691.00
$ 691.00
$ 553.00
$ 553.00 - $ 553.00
$ 553.00
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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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$ 185.00
$ 185.00 - $ 185.00
$ 185.00
$ 148.00
$ 148.00 - $ 148.00
$ 148.00

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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$ 185.00
$ 185.00 - $ 185.00
$ 185.00
$ 148.00
$ 148.00 - $ 148.00
$ 148.00
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Save 20% Save %
$ 185.00
$ 185.00 - $ 185.00
$ 185.00
$ 148.00
$ 148.00 - $ 148.00
$ 148.00

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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$ 185.00
$ 185.00 - $ 185.00
$ 185.00
$ 148.00
$ 148.00 - $ 148.00
$ 148.00
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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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$ 267.00
$ 267.00 - $ 267.00
$ 267.00
$ 214.00
$ 214.00 - $ 214.00
$ 214.00

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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$ 267.00
$ 267.00 - $ 267.00
$ 267.00
$ 214.00
$ 214.00 - $ 214.00
$ 214.00
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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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$ 588.00
$ 588.00 - $ 588.00
$ 588.00
$ 470.00
$ 470.00 - $ 470.00
$ 470.00

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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$ 588.00
$ 588.00 - $ 588.00
$ 588.00
$ 470.00
$ 470.00 - $ 470.00
$ 470.00
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$ 588.00
$ 588.00 - $ 588.00
$ 588.00
$ 470.00
$ 470.00 - $ 470.00
$ 470.00

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 ...

View full details
$ 588.00
$ 588.00 - $ 588.00
$ 588.00
$ 470.00
$ 470.00 - $ 470.00
$ 470.00
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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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$ 694.00
$ 694.00 - $ 694.00
$ 694.00
$ 557.00
$ 557.00 - $ 557.00
$ 557.00

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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$ 694.00
$ 694.00 - $ 694.00
$ 694.00
$ 557.00
$ 557.00 - $ 557.00
$ 557.00
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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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$ 121.00
$ 121.00 - $ 121.00
$ 121.00
$ 97.00
$ 97.00 - $ 97.00
$ 97.00

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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$ 121.00
$ 121.00 - $ 121.00
$ 121.00
$ 97.00
$ 97.00 - $ 97.00
$ 97.00
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Save 20% Save %
$ 121.00
$ 121.00 - $ 121.00
$ 121.00
$ 97.00
$ 97.00 - $ 97.00
$ 97.00

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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$ 121.00
$ 121.00 - $ 121.00
$ 121.00
$ 97.00
$ 97.00 - $ 97.00
$ 97.00
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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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$ 210.00
$ 210.00 - $ 210.00
$ 210.00
$ 169.00
$ 169.00 - $ 169.00
$ 169.00

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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$ 210.00
$ 210.00 - $ 210.00
$ 210.00
$ 169.00
$ 169.00 - $ 169.00
$ 169.00
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