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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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$ 546.00
$ 546.00 - $ 546.00
$ 546.00
$ 438.00
$ 438.00 - $ 438.00
$ 438.00

5505, 5 Series, Industrial Coupler, Automatic, 3/4" Male NPT, 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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$ 594.00
$ 594.00 - $ 594.00
$ 594.00
$ 476.00
$ 476.00 - $ 476.00
$ 476.00

5605, 5 Series, Industrial Coupler, Automatic, 1/4" Hose Barb, 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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$ 581.00
$ 581.00 - $ 581.00
$ 581.00
$ 465.00
$ 465.00 - $ 465.00
$ 465.00

5705, 5 Series, Industrial Coupler, Automatic, 3/8" Hose Barb, 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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$ 503.00
$ 503.00 - $ 503.00
$ 503.00
$ 403.00
$ 403.00 - $ 403.00
$ 403.00

81-5B, 5 Series, Industrial Plug, 1/2" Hose Barb, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 81-5B is a Brass 1/2" industrial plug from the Foster 5 Series —...

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$ 503.00
$ 503.00 - $ 503.00
$ 503.00
$ 403.00
$ 403.00 - $ 403.00
$ 403.00
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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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$ 514.00
$ 514.00 - $ 514.00
$ 514.00
$ 410.00
$ 410.00 - $ 410.00
$ 410.00

Foster 1815, 1/2" Industrial Coupler x 1/2" Push-On Hose Stem, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 1815 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 514.00
$ 514.00 - $ 514.00
$ 514.00
$ 410.00
$ 410.00 - $ 410.00
$ 410.00
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$ 514.00
$ 514.00 - $ 514.00
$ 514.00
$ 410.00
$ 410.00 - $ 410.00
$ 410.00

Foster 1815, 5 Series, Industrial Coupler, Automatic, 1/2" Push-On Hose Barb, Brass, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 1815 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 514.00
$ 514.00 - $ 514.00
$ 514.00
$ 410.00
$ 410.00 - $ 410.00
$ 410.00
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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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$ 531.00
$ 531.00 - $ 531.00
$ 531.00
$ 424.00
$ 424.00 - $ 424.00
$ 424.00

Foster 1815W, 1/2" Industrial Coupler x 1/2" Push-On Hose Stem, 5 Series, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 1815W is a Brass/SS 1/2" industrial coupler from the Foster 5 Se...

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$ 531.00
$ 531.00 - $ 531.00
$ 531.00
$ 424.00
$ 424.00 - $ 424.00
$ 424.00
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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 4015, 1/2" Industrial Coupler x 1/4" Female NPT, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 4015 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 4015, 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 4015 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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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 4905, 1/2" Industrial Coupler x 1/4" Male NPT, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 4905 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 4905, 5 Series, Industrial Coupler, Automatic, 1/4" Male NPT, Brass, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 4905 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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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 98.00
$ 98.00 - $ 98.00
$ 98.00
$ 80.00
$ 80.00 - $ 80.00
$ 80.00

Foster 50-5, 1/2" Industrial Plug x 1/4" Male NPT, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 50-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 98.00
$ 98.00 - $ 98.00
$ 98.00
$ 80.00
$ 80.00 - $ 80.00
$ 80.00
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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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$ 546.00
$ 546.00 - $ 546.00
$ 546.00
$ 436.00
$ 436.00 - $ 436.00
$ 436.00

Foster 5005, 1/2" Industrial Coupler x 3/8" Female NPT, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5005 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 546.00
$ 546.00 - $ 546.00
$ 546.00
$ 436.00
$ 436.00 - $ 436.00
$ 436.00
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Save 20% Save %
$ 546.00
$ 546.00 - $ 546.00
$ 546.00
$ 436.00
$ 436.00 - $ 436.00
$ 436.00

Foster 5005, 5 Series, Industrial Coupler, Automatic, 3/8" Female NPT, Brass, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5005 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 546.00
$ 546.00 - $ 546.00
$ 546.00
$ 436.00
$ 436.00 - $ 436.00
$ 436.00
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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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$ 562.00
$ 562.00 - $ 562.00
$ 562.00
$ 450.00
$ 450.00 - $ 450.00
$ 450.00

Foster 5005H, 1/2" Industrial Coupler x 3/8" Female NPT, 5 Series, Heat/Viton, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5005H is a Brass/Steel 1/2" industrial coupler from the Foster 5...

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$ 562.00
$ 562.00 - $ 562.00
$ 562.00
$ 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
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$ 660.00
$ 660.00 - $ 660.00
$ 660.00
$ 527.00
$ 527.00 - $ 527.00
$ 527.00

Foster 5005W, 1/2" Industrial Coupler x 3/8" Female NPT, 5 Series, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5005W is a Brass/SS 1/2" industrial coupler from the Foster 5 Se...

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$ 660.00
$ 660.00 - $ 660.00
$ 660.00
$ 527.00
$ 527.00 - $ 527.00
$ 527.00
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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
$ 436.00
$ 436.00 - $ 436.00
$ 436.00

Foster 5105, 1/2" Industrial Coupler x 3/8" Male NPT, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5105 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 546.00
$ 546.00 - $ 546.00
$ 546.00
$ 436.00
$ 436.00 - $ 436.00
$ 436.00
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Save 20% Save %
$ 546.00
$ 546.00 - $ 546.00
$ 546.00
$ 436.00
$ 436.00 - $ 436.00
$ 436.00

Foster 5105, 5 Series, Industrial Coupler, Automatic, 3/8" Male NPT, Brass, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5105 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 546.00
$ 546.00 - $ 546.00
$ 546.00
$ 436.00
$ 436.00 - $ 436.00
$ 436.00
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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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$ 119.00
$ 119.00 - $ 119.00
$ 119.00
$ 95.00
$ 95.00 - $ 95.00
$ 95.00

Foster 52-5, 1/2" Industrial Plug x 3/8" Male NPT, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 52-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 119.00
$ 119.00 - $ 119.00
$ 119.00
$ 95.00
$ 95.00 - $ 95.00
$ 95.00
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$ 119.00
$ 119.00 - $ 119.00
$ 119.00
$ 95.00
$ 95.00 - $ 95.00
$ 95.00

Foster 52-5, 5 Series, Industrial Plug, 3/8" Male NPT, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 52-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 119.00
$ 119.00 - $ 119.00
$ 119.00
$ 95.00
$ 95.00 - $ 95.00
$ 95.00
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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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$ 274.00
$ 274.00 - $ 274.00
$ 274.00
$ 219.00
$ 219.00 - $ 219.00
$ 219.00

Foster 52-5B, 1/2" Industrial Plug x 3/8" Male NPT, 5 Series, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 52-5B is a Brass 1/2" industrial plug from the Foster 5 Series —...

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$ 274.00
$ 274.00 - $ 274.00
$ 274.00
$ 219.00
$ 219.00 - $ 219.00
$ 219.00
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Save 20% Save %
$ 274.00
$ 274.00 - $ 274.00
$ 274.00
$ 219.00
$ 219.00 - $ 219.00
$ 219.00

Foster 52-5B, 5 Series, Industrial Plug, 3/8" Male NPT, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 52-5B is a Brass 1/2" industrial plug from the Foster 5 Series —...

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$ 274.00
$ 274.00 - $ 274.00
$ 274.00
$ 219.00
$ 219.00 - $ 219.00
$ 219.00
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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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$ 526.00
$ 526.00 - $ 526.00
$ 526.00
$ 421.00
$ 421.00 - $ 421.00
$ 421.00

Foster 5205, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5205 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 526.00
$ 526.00 - $ 526.00
$ 526.00
$ 421.00
$ 421.00 - $ 421.00
$ 421.00
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$ 526.00
$ 526.00 - $ 526.00
$ 526.00
$ 421.00
$ 421.00 - $ 421.00
$ 421.00

Foster 5205, 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 5205 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 526.00
$ 526.00 - $ 526.00
$ 526.00
$ 421.00
$ 421.00 - $ 421.00
$ 421.00
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