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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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$ 608.00
$ 608.00 - $ 608.00
$ 608.00
$ 487.00
$ 487.00 - $ 487.00
$ 487.00

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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$ 608.00
$ 608.00 - $ 608.00
$ 608.00
$ 487.00
$ 487.00 - $ 487.00
$ 487.00
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$ 662.00
$ 662.00 - $ 662.00
$ 662.00
$ 529.00
$ 529.00 - $ 529.00
$ 529.00

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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$ 662.00
$ 662.00 - $ 662.00
$ 662.00
$ 529.00
$ 529.00 - $ 529.00
$ 529.00
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$ 646.00
$ 646.00 - $ 646.00
$ 646.00
$ 518.00
$ 518.00 - $ 518.00
$ 518.00

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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$ 646.00
$ 646.00 - $ 646.00
$ 646.00
$ 518.00
$ 518.00 - $ 518.00
$ 518.00
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$ 560.00
$ 560.00 - $ 560.00
$ 560.00
$ 449.00
$ 449.00 - $ 449.00
$ 449.00

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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$ 560.00
$ 560.00 - $ 560.00
$ 560.00
$ 449.00
$ 449.00 - $ 449.00
$ 449.00
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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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$ 572.00
$ 572.00 - $ 572.00
$ 572.00
$ 457.00
$ 457.00 - $ 457.00
$ 457.00

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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$ 572.00
$ 572.00 - $ 572.00
$ 572.00
$ 457.00
$ 457.00 - $ 457.00
$ 457.00
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$ 572.00
$ 572.00 - $ 572.00
$ 572.00
$ 457.00
$ 457.00 - $ 457.00
$ 457.00

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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$ 572.00
$ 572.00 - $ 572.00
$ 572.00
$ 457.00
$ 457.00 - $ 457.00
$ 457.00
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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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$ 591.00
$ 591.00 - $ 591.00
$ 591.00
$ 472.00
$ 472.00 - $ 472.00
$ 472.00

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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$ 591.00
$ 591.00 - $ 591.00
$ 591.00
$ 472.00
$ 472.00 - $ 472.00
$ 472.00
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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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$ 654.00
$ 654.00 - $ 654.00
$ 654.00
$ 524.00
$ 524.00 - $ 524.00
$ 524.00

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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$ 654.00
$ 654.00 - $ 654.00
$ 654.00
$ 524.00
$ 524.00 - $ 524.00
$ 524.00
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$ 654.00
$ 654.00 - $ 654.00
$ 654.00
$ 524.00
$ 524.00 - $ 524.00
$ 524.00

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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$ 654.00
$ 654.00 - $ 654.00
$ 654.00
$ 524.00
$ 524.00 - $ 524.00
$ 524.00
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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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$ 654.00
$ 654.00 - $ 654.00
$ 654.00
$ 524.00
$ 524.00 - $ 524.00
$ 524.00

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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$ 654.00
$ 654.00 - $ 654.00
$ 654.00
$ 524.00
$ 524.00 - $ 524.00
$ 524.00
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Save 20% Save %
$ 654.00
$ 654.00 - $ 654.00
$ 654.00
$ 524.00
$ 524.00 - $ 524.00
$ 524.00

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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$ 654.00
$ 654.00 - $ 654.00
$ 654.00
$ 524.00
$ 524.00 - $ 524.00
$ 524.00
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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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$ 110.00
$ 110.00 - $ 110.00
$ 110.00
$ 88.00
$ 88.00 - $ 88.00
$ 88.00

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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$ 110.00
$ 110.00 - $ 110.00
$ 110.00
$ 88.00
$ 88.00 - $ 88.00
$ 88.00
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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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$ 608.00
$ 608.00 - $ 608.00
$ 608.00
$ 485.00
$ 485.00 - $ 485.00
$ 485.00

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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$ 608.00
$ 608.00 - $ 608.00
$ 608.00
$ 485.00
$ 485.00 - $ 485.00
$ 485.00
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$ 608.00
$ 608.00 - $ 608.00
$ 608.00
$ 485.00
$ 485.00 - $ 485.00
$ 485.00

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 ...

View full details
$ 608.00
$ 608.00 - $ 608.00
$ 608.00
$ 485.00
$ 485.00 - $ 485.00
$ 485.00
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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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$ 625.00
$ 625.00 - $ 625.00
$ 625.00
$ 501.00
$ 501.00 - $ 501.00
$ 501.00

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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$ 625.00
$ 625.00 - $ 625.00
$ 625.00
$ 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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$ 734.00
$ 734.00 - $ 734.00
$ 734.00
$ 587.00
$ 587.00 - $ 587.00
$ 587.00

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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$ 734.00
$ 734.00 - $ 734.00
$ 734.00
$ 587.00
$ 587.00 - $ 587.00
$ 587.00
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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 %
$ 608.00
$ 608.00 - $ 608.00
$ 608.00
$ 485.00
$ 485.00 - $ 485.00
$ 485.00

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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$ 608.00
$ 608.00 - $ 608.00
$ 608.00
$ 485.00
$ 485.00 - $ 485.00
$ 485.00
Save 20% Save %
Save 20% Save %
$ 608.00
$ 608.00 - $ 608.00
$ 608.00
$ 485.00
$ 485.00 - $ 485.00
$ 485.00

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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$ 608.00
$ 608.00 - $ 608.00
$ 608.00
$ 485.00
$ 485.00 - $ 485.00
$ 485.00
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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$ 133.00
$ 133.00 - $ 133.00
$ 133.00
$ 106.00
$ 106.00 - $ 106.00
$ 106.00

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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$ 133.00
$ 133.00 - $ 133.00
$ 133.00
$ 106.00
$ 106.00 - $ 106.00
$ 106.00
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$ 133.00
$ 133.00 - $ 133.00
$ 133.00
$ 106.00
$ 106.00 - $ 106.00
$ 106.00

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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$ 133.00
$ 133.00 - $ 133.00
$ 133.00
$ 106.00
$ 106.00 - $ 106.00
$ 106.00
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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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$ 305.00
$ 305.00 - $ 305.00
$ 305.00
$ 244.00
$ 244.00 - $ 244.00
$ 244.00

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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$ 305.00
$ 305.00 - $ 305.00
$ 305.00
$ 244.00
$ 244.00 - $ 244.00
$ 244.00
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$ 305.00
$ 305.00 - $ 305.00
$ 305.00
$ 244.00
$ 244.00 - $ 244.00
$ 244.00

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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$ 305.00
$ 305.00 - $ 305.00
$ 305.00
$ 244.00
$ 244.00 - $ 244.00
$ 244.00
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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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$ 585.00
$ 585.00 - $ 585.00
$ 585.00
$ 468.00
$ 468.00 - $ 468.00
$ 468.00

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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$ 585.00
$ 585.00 - $ 585.00
$ 585.00
$ 468.00
$ 468.00 - $ 468.00
$ 468.00
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$ 585.00
$ 585.00 - $ 585.00
$ 585.00
$ 468.00
$ 468.00 - $ 468.00
$ 468.00

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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$ 585.00
$ 585.00 - $ 585.00
$ 585.00
$ 468.00
$ 468.00 - $ 468.00
$ 468.00
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