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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 %
$ 584.00
$ 584.00 - $ 584.00
$ 584.00
$ 467.00
$ 467.00 - $ 467.00
$ 467.00

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

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

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$ 584.00
$ 584.00 - $ 584.00
$ 584.00
$ 467.00
$ 467.00 - $ 467.00
$ 467.00
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 %
$ 515.00
$ 515.00 - $ 515.00
$ 515.00
$ 413.00
$ 413.00 - $ 413.00
$ 413.00

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

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

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$ 515.00
$ 515.00 - $ 515.00
$ 515.00
$ 413.00
$ 413.00 - $ 413.00
$ 413.00
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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 %
$ 1,027.00
$ 1,027.00 - $ 1,027.00
$ 1,027.00
$ 821.00
$ 821.00 - $ 821.00
$ 821.00

Foster 5205S/S, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, 303 Stainless

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5205S/S is a 303 Stainless 1/2" industrial coupler from the Fost...

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$ 1,027.00
$ 1,027.00 - $ 1,027.00
$ 1,027.00
$ 821.00
$ 821.00 - $ 821.00
$ 821.00
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 %
$ 660.00
$ 660.00 - $ 660.00
$ 660.00
$ 528.00
$ 528.00 - $ 528.00
$ 528.00

Foster 5205W, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5205W 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
$ 528.00
$ 528.00 - $ 528.00
$ 528.00
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 %
$ 337.00
$ 337.00 - $ 337.00
$ 337.00
$ 269.00
$ 269.00 - $ 269.00
$ 269.00

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

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

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$ 337.00
$ 337.00 - $ 337.00
$ 337.00
$ 269.00
$ 269.00 - $ 269.00
$ 269.00
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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 %
$ 227.00
$ 227.00 - $ 227.00
$ 227.00
$ 181.00
$ 181.00 - $ 181.00
$ 181.00

Foster 53-5, 1/2" Industrial Plug x 3/8" Female NPT, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 53-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 227.00
$ 227.00 - $ 227.00
$ 227.00
$ 181.00
$ 181.00 - $ 181.00
$ 181.00
Save 20% Save %
Save 20% Save %
$ 227.00
$ 227.00 - $ 227.00
$ 227.00
$ 181.00
$ 181.00 - $ 181.00
$ 181.00

Foster 53-5, 5 Series, Industrial Plug, 3/8" Female NPT, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 53-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 227.00
$ 227.00 - $ 227.00
$ 227.00
$ 181.00
$ 181.00 - $ 181.00
$ 181.00
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 %
$ 547.00
$ 547.00 - $ 547.00
$ 547.00
$ 437.00
$ 437.00 - $ 437.00
$ 437.00

Foster 5305, 1/2" Industrial Coupler x 1/2" Male NPT, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5305 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 547.00
$ 547.00 - $ 547.00
$ 547.00
$ 437.00
$ 437.00 - $ 437.00
$ 437.00
Save 20% Save %
Save 20% Save %
$ 547.00
$ 547.00 - $ 547.00
$ 547.00
$ 437.00
$ 437.00 - $ 437.00
$ 437.00

Foster 5305, 5 Series, Industrial Coupler, Automatic, 1/2" Male NPT, Brass, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5305 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 547.00
$ 547.00 - $ 547.00
$ 547.00
$ 437.00
$ 437.00 - $ 437.00
$ 437.00
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 %
$ 584.00
$ 584.00 - $ 584.00
$ 584.00
$ 467.00
$ 467.00 - $ 467.00
$ 467.00

Foster 5305H, 1/2" Industrial Coupler x 1/2" Male NPT, 5 Series, Heat/Viton, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5305H is a Brass/Steel 1/2" industrial coupler from the Foster 5...

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$ 584.00
$ 584.00 - $ 584.00
$ 584.00
$ 467.00
$ 467.00 - $ 467.00
$ 467.00
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 %
$ 1,000.00
$ 1,000.00 - $ 1,000.00
$ 1,000.00
$ 800.00
$ 800.00 - $ 800.00
$ 800.00

Foster 5305S/S, 1/2" Industrial Coupler x 1/2" Male NPT, 5 Series, 303 Stainless

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5305S/S is a 303 Stainless 1/2" industrial coupler from the Fost...

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$ 1,000.00
$ 1,000.00 - $ 1,000.00
$ 1,000.00
$ 800.00
$ 800.00 - $ 800.00
$ 800.00
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 %
$ 660.00
$ 660.00 - $ 660.00
$ 660.00
$ 528.00
$ 528.00 - $ 528.00
$ 528.00

Foster 5305W, 1/2" Industrial Coupler x 1/2" Male NPT, 5 Series, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5305W 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
$ 528.00
$ 528.00 - $ 528.00
$ 528.00
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 %
$ 131.00
$ 131.00 - $ 131.00
$ 131.00
$ 105.00
$ 105.00 - $ 105.00
$ 105.00

Foster 54-5, 1/2" Industrial Plug x 1/2" Male NPT, 5 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 54-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 131.00
$ 131.00 - $ 131.00
$ 131.00
$ 105.00
$ 105.00 - $ 105.00
$ 105.00
Save 20% Save %
Save 20% Save %
$ 131.00
$ 131.00 - $ 131.00
$ 131.00
$ 105.00
$ 105.00 - $ 105.00
$ 105.00

Foster 54-5, 5 Series, Industrial Plug, 1/2" Male NPT, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 54-5 is a Steel 1/2" industrial plug from the Foster 5 Series — ...

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$ 131.00
$ 131.00 - $ 131.00
$ 131.00
$ 105.00
$ 105.00 - $ 105.00
$ 105.00
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 %
$ 289.00
$ 289.00 - $ 289.00
$ 289.00
$ 230.00
$ 230.00 - $ 230.00
$ 230.00

Foster 54-5B, 1/2" Industrial Plug x 1/2" Male NPT, 5 Series, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 54-5B is a Brass 1/2" industrial plug from the Foster 5 Series —...

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$ 289.00
$ 289.00 - $ 289.00
$ 289.00
$ 230.00
$ 230.00 - $ 230.00
$ 230.00
Save 20% Save %
Save 20% Save %
$ 289.00
$ 289.00 - $ 289.00
$ 289.00
$ 230.00
$ 230.00 - $ 230.00
$ 230.00

Foster 54-5B, 5 Series, Industrial Plug, 1/2" Male NPT, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 54-5B is a Brass 1/2" industrial plug from the Foster 5 Series —...

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$ 289.00
$ 289.00 - $ 289.00
$ 289.00
$ 230.00
$ 230.00 - $ 230.00
$ 230.00
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 %
$ 246.00
$ 246.00 - $ 246.00
$ 246.00
$ 198.00
$ 198.00 - $ 198.00
$ 198.00

Foster 54-5G, 1/2" Industrial Plug x 1/2" Male NPT, 5 Series, Ball Check, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 54-5G is a Steel 1/2" industrial plug from the Foster 5 Series —...

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$ 246.00
$ 246.00 - $ 246.00
$ 246.00
$ 198.00
$ 198.00 - $ 198.00
$ 198.00
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 %
$ 397.00
$ 397.00 - $ 397.00
$ 397.00
$ 317.00
$ 317.00 - $ 317.00
$ 317.00

Foster 54-5GB, 1/2" Industrial Plug x 1/2" Male NPT, 5 Series, Ball Check, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 54-5GB is a Brass 1/2" industrial plug from the Foster 5 Series ...

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$ 397.00
$ 397.00 - $ 397.00
$ 397.00
$ 317.00
$ 317.00 - $ 317.00
$ 317.00
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 %
$ 321.00
$ 321.00 - $ 321.00
$ 321.00
$ 257.00
$ 257.00 - $ 257.00
$ 257.00

Foster 54-5S/S, 1/2" Industrial Plug x 1/2" Male NPT, 5 Series, 303 Stainless

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 54-5S/S is a 303 Stainless 1/2" industrial plug from the Foster ...

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$ 321.00
$ 321.00 - $ 321.00
$ 321.00
$ 257.00
$ 257.00 - $ 257.00
$ 257.00
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 %
$ 554.00
$ 554.00 - $ 554.00
$ 554.00
$ 444.00
$ 444.00 - $ 444.00
$ 444.00

Foster 5405, 1/2" Industrial Coupler x 3/4" Female NPT, 5 Series, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5405 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 554.00
$ 554.00 - $ 554.00
$ 554.00
$ 444.00
$ 444.00 - $ 444.00
$ 444.00
Save 20% Save %
Save 20% Save %
$ 554.00
$ 554.00 - $ 554.00
$ 554.00
$ 444.00
$ 444.00 - $ 444.00
$ 444.00

Foster 5405, 5 Series, Industrial Coupler, Automatic, 3/4" Female NPT, Brass, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5405 is a Brass/Steel 1/2" industrial coupler from the Foster 5 ...

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$ 554.00
$ 554.00 - $ 554.00
$ 554.00
$ 444.00
$ 444.00 - $ 444.00
$ 444.00
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 %
$ 667.00
$ 667.00 - $ 667.00
$ 667.00
$ 535.00
$ 535.00 - $ 535.00
$ 535.00

Foster 5405W, 1/2" Industrial Coupler x 3/4" Female NPT, 5 Series, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 5405W is a Brass/SS 1/2" industrial coupler from the Foster 5 Se...

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$ 667.00
$ 667.00 - $ 667.00
$ 667.00
$ 535.00
$ 535.00 - $ 535.00
$ 535.00
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 %
$ 245.00
$ 245.00 - $ 245.00
$ 245.00
$ 195.00
$ 195.00 - $ 195.00
$ 195.00

Foster 54S-5, 1/2" Industrial Plug x 1/2" Male NPT, 5 Series, Free Swivel, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 54S-5 is a Brass/Steel 1/2" industrial plug from the Foster 5 Se...

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$ 245.00
$ 245.00 - $ 245.00
$ 245.00
$ 195.00
$ 195.00 - $ 195.00
$ 195.00
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 %
$ 140.00
$ 140.00 - $ 140.00
$ 140.00
$ 112.00
$ 112.00 - $ 112.00
$ 112.00

Foster 55-5, 1/2" Industrial Plug x 1/2" Female NPT, 5 Series, 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
Save 20% Save %

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