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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 %
$ 625.00
$ 625.00 - $ 625.00
$ 625.00
$ 500.00
$ 500.00 - $ 500.00
$ 500.00

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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$ 625.00
$ 625.00 - $ 625.00
$ 625.00
$ 500.00
$ 500.00 - $ 500.00
$ 500.00
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 %
$ 551.00
$ 551.00 - $ 551.00
$ 551.00
$ 441.00
$ 441.00 - $ 441.00
$ 441.00

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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$ 551.00
$ 551.00 - $ 551.00
$ 551.00
$ 441.00
$ 441.00 - $ 441.00
$ 441.00
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 %
$ 1,098.00
$ 1,098.00 - $ 1,098.00
$ 1,098.00
$ 879.00
$ 879.00 - $ 879.00
$ 879.00

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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$ 1,098.00
$ 1,098.00 - $ 1,098.00
$ 1,098.00
$ 879.00
$ 879.00 - $ 879.00
$ 879.00
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 %
$ 706.00
$ 706.00 - $ 706.00
$ 706.00
$ 564.00
$ 564.00 - $ 564.00
$ 564.00

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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$ 706.00
$ 706.00 - $ 706.00
$ 706.00
$ 564.00
$ 564.00 - $ 564.00
$ 564.00
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 %
$ 360.00
$ 360.00 - $ 360.00
$ 360.00
$ 288.00
$ 288.00 - $ 288.00
$ 288.00

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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$ 360.00
$ 360.00 - $ 360.00
$ 360.00
$ 288.00
$ 288.00 - $ 288.00
$ 288.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 21% Save %
$ 243.00
$ 243.00 - $ 243.00
$ 243.00
$ 193.00
$ 193.00 - $ 193.00
$ 193.00

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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$ 243.00
$ 243.00 - $ 243.00
$ 243.00
$ 193.00
$ 193.00 - $ 193.00
$ 193.00
Save 21% Save %
Save 21% Save %
$ 243.00
$ 243.00 - $ 243.00
$ 243.00
$ 193.00
$ 193.00 - $ 193.00
$ 193.00

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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$ 243.00
$ 243.00 - $ 243.00
$ 243.00
$ 193.00
$ 193.00 - $ 193.00
$ 193.00
Save 21% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 585.00
$ 585.00 - $ 585.00
$ 585.00
$ 468.00
$ 468.00 - $ 468.00
$ 468.00

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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$ 585.00
$ 585.00 - $ 585.00
$ 585.00
$ 468.00
$ 468.00 - $ 468.00
$ 468.00
Save 20% Save %
Save 20% Save %
$ 585.00
$ 585.00 - $ 585.00
$ 585.00
$ 468.00
$ 468.00 - $ 468.00
$ 468.00

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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$ 585.00
$ 585.00 - $ 585.00
$ 585.00
$ 468.00
$ 468.00 - $ 468.00
$ 468.00
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 %
$ 625.00
$ 625.00 - $ 625.00
$ 625.00
$ 500.00
$ 500.00 - $ 500.00
$ 500.00

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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$ 625.00
$ 625.00 - $ 625.00
$ 625.00
$ 500.00
$ 500.00 - $ 500.00
$ 500.00
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 %
$ 1,070.00
$ 1,070.00 - $ 1,070.00
$ 1,070.00
$ 856.00
$ 856.00 - $ 856.00
$ 856.00

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...

View full details
$ 1,070.00
$ 1,070.00 - $ 1,070.00
$ 1,070.00
$ 856.00
$ 856.00 - $ 856.00
$ 856.00
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 %
$ 706.00
$ 706.00 - $ 706.00
$ 706.00
$ 564.00
$ 564.00 - $ 564.00
$ 564.00

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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$ 706.00
$ 706.00 - $ 706.00
$ 706.00
$ 564.00
$ 564.00 - $ 564.00
$ 564.00
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 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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$ 140.00
$ 140.00 - $ 140.00
$ 140.00
$ 112.00
$ 112.00 - $ 112.00
$ 112.00
Save 20% Save %
Save 20% Save %
$ 140.00
$ 140.00 - $ 140.00
$ 140.00
$ 112.00
$ 112.00 - $ 112.00
$ 112.00

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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$ 140.00
$ 140.00 - $ 140.00
$ 140.00
$ 112.00
$ 112.00 - $ 112.00
$ 112.00
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 %
$ 309.00
$ 309.00 - $ 309.00
$ 309.00
$ 246.00
$ 246.00 - $ 246.00
$ 246.00

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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$ 309.00
$ 309.00 - $ 309.00
$ 309.00
$ 246.00
$ 246.00 - $ 246.00
$ 246.00
Save 20% Save %
Save 20% Save %
$ 309.00
$ 309.00 - $ 309.00
$ 309.00
$ 246.00
$ 246.00 - $ 246.00
$ 246.00

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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$ 309.00
$ 309.00 - $ 309.00
$ 309.00
$ 246.00
$ 246.00 - $ 246.00
$ 246.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 19% Save %
$ 263.00
$ 263.00 - $ 263.00
$ 263.00
$ 212.00
$ 212.00 - $ 212.00
$ 212.00

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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$ 263.00
$ 263.00 - $ 263.00
$ 263.00
$ 212.00
$ 212.00 - $ 212.00
$ 212.00
Save 19% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 424.00
$ 424.00 - $ 424.00
$ 424.00
$ 339.00
$ 339.00 - $ 339.00
$ 339.00

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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$ 424.00
$ 424.00 - $ 424.00
$ 424.00
$ 339.00
$ 339.00 - $ 339.00
$ 339.00
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 %
$ 343.00
$ 343.00 - $ 343.00
$ 343.00
$ 275.00
$ 275.00 - $ 275.00
$ 275.00

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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$ 343.00
$ 343.00 - $ 343.00
$ 343.00
$ 275.00
$ 275.00 - $ 275.00
$ 275.00
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 %
$ 593.00
$ 593.00 - $ 593.00
$ 593.00
$ 475.00
$ 475.00 - $ 475.00
$ 475.00

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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$ 593.00
$ 593.00 - $ 593.00
$ 593.00
$ 475.00
$ 475.00 - $ 475.00
$ 475.00
Save 20% Save %
Save 20% Save %
$ 593.00
$ 593.00 - $ 593.00
$ 593.00
$ 475.00
$ 475.00 - $ 475.00
$ 475.00

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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$ 593.00
$ 593.00 - $ 593.00
$ 593.00
$ 475.00
$ 475.00 - $ 475.00
$ 475.00
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 %
$ 714.00
$ 714.00 - $ 714.00
$ 714.00
$ 572.00
$ 572.00 - $ 572.00
$ 572.00

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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$ 714.00
$ 714.00 - $ 714.00
$ 714.00
$ 572.00
$ 572.00 - $ 572.00
$ 572.00
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 %
$ 262.00
$ 262.00 - $ 262.00
$ 262.00
$ 209.00
$ 209.00 - $ 209.00
$ 209.00

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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$ 262.00
$ 262.00 - $ 262.00
$ 262.00
$ 209.00
$ 209.00 - $ 209.00
$ 209.00
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 %
$ 150.00
$ 150.00 - $ 150.00
$ 150.00
$ 120.00
$ 120.00 - $ 120.00
$ 120.00

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 — ...

View full details
$ 150.00
$ 150.00 - $ 150.00
$ 150.00
$ 120.00
$ 120.00 - $ 120.00
$ 120.00
Save 20% Save %

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