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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 %
$ 569.00
$ 569.00 - $ 569.00
$ 569.00
$ 455.00
$ 455.00 - $ 455.00
$ 455.00

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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$ 569.00
$ 569.00 - $ 569.00
$ 569.00
$ 455.00
$ 455.00 - $ 455.00
$ 455.00
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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 %
$ 501.00
$ 501.00 - $ 501.00
$ 501.00
$ 402.00
$ 402.00 - $ 402.00
$ 402.00

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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$ 501.00
$ 501.00 - $ 501.00
$ 501.00
$ 402.00
$ 402.00 - $ 402.00
$ 402.00
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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 %
$ 999.00
$ 999.00 - $ 999.00
$ 999.00
$ 799.00
$ 799.00 - $ 799.00
$ 799.00

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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$ 999.00
$ 999.00 - $ 999.00
$ 999.00
$ 799.00
$ 799.00 - $ 799.00
$ 799.00
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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 %
$ 643.00
$ 643.00 - $ 643.00
$ 643.00
$ 514.00
$ 514.00 - $ 514.00
$ 514.00

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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$ 643.00
$ 643.00 - $ 643.00
$ 643.00
$ 514.00
$ 514.00 - $ 514.00
$ 514.00
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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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$ 328.00
$ 328.00 - $ 328.00
$ 328.00
$ 262.00
$ 262.00 - $ 262.00
$ 262.00

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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$ 328.00
$ 328.00 - $ 328.00
$ 328.00
$ 262.00
$ 262.00 - $ 262.00
$ 262.00
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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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$ 221.00
$ 221.00 - $ 221.00
$ 221.00
$ 176.00
$ 176.00 - $ 176.00
$ 176.00

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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$ 221.00
$ 221.00 - $ 221.00
$ 221.00
$ 176.00
$ 176.00 - $ 176.00
$ 176.00
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Save 20% Save %
$ 221.00
$ 221.00 - $ 221.00
$ 221.00
$ 176.00
$ 176.00 - $ 176.00
$ 176.00

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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$ 221.00
$ 221.00 - $ 221.00
$ 221.00
$ 176.00
$ 176.00 - $ 176.00
$ 176.00
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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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$ 532.00
$ 532.00 - $ 532.00
$ 532.00
$ 426.00
$ 426.00 - $ 426.00
$ 426.00

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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$ 532.00
$ 532.00 - $ 532.00
$ 532.00
$ 426.00
$ 426.00 - $ 426.00
$ 426.00
Save 20% Save %
Save 20% Save %
$ 532.00
$ 532.00 - $ 532.00
$ 532.00
$ 426.00
$ 426.00 - $ 426.00
$ 426.00

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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$ 532.00
$ 532.00 - $ 532.00
$ 532.00
$ 426.00
$ 426.00 - $ 426.00
$ 426.00
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 %
$ 569.00
$ 569.00 - $ 569.00
$ 569.00
$ 455.00
$ 455.00 - $ 455.00
$ 455.00

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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$ 569.00
$ 569.00 - $ 569.00
$ 569.00
$ 455.00
$ 455.00 - $ 455.00
$ 455.00
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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$ 973.00
$ 973.00 - $ 973.00
$ 973.00
$ 779.00
$ 779.00 - $ 779.00
$ 779.00

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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$ 973.00
$ 973.00 - $ 973.00
$ 973.00
$ 779.00
$ 779.00 - $ 779.00
$ 779.00
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 %
$ 643.00
$ 643.00 - $ 643.00
$ 643.00
$ 514.00
$ 514.00 - $ 514.00
$ 514.00

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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$ 643.00
$ 643.00 - $ 643.00
$ 643.00
$ 514.00
$ 514.00 - $ 514.00
$ 514.00
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 %
$ 128.00
$ 128.00 - $ 128.00
$ 128.00
$ 102.00
$ 102.00 - $ 102.00
$ 102.00

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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$ 128.00
$ 128.00 - $ 128.00
$ 128.00
$ 102.00
$ 102.00 - $ 102.00
$ 102.00
Save 20% Save %
Save 20% Save %
$ 128.00
$ 128.00 - $ 128.00
$ 128.00
$ 102.00
$ 102.00 - $ 102.00
$ 102.00

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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$ 128.00
$ 128.00 - $ 128.00
$ 128.00
$ 102.00
$ 102.00 - $ 102.00
$ 102.00
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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 %
$ 281.00
$ 281.00 - $ 281.00
$ 281.00
$ 224.00
$ 224.00 - $ 224.00
$ 224.00

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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$ 281.00
$ 281.00 - $ 281.00
$ 281.00
$ 224.00
$ 224.00 - $ 224.00
$ 224.00
Save 20% Save %
Save 20% Save %
$ 281.00
$ 281.00 - $ 281.00
$ 281.00
$ 224.00
$ 224.00 - $ 224.00
$ 224.00

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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$ 281.00
$ 281.00 - $ 281.00
$ 281.00
$ 224.00
$ 224.00 - $ 224.00
$ 224.00
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 %
$ 240.00
$ 240.00 - $ 240.00
$ 240.00
$ 193.00
$ 193.00 - $ 193.00
$ 193.00

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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$ 240.00
$ 240.00 - $ 240.00
$ 240.00
$ 193.00
$ 193.00 - $ 193.00
$ 193.00
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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$ 386.00
$ 386.00 - $ 386.00
$ 386.00
$ 309.00
$ 309.00 - $ 309.00
$ 309.00

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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$ 386.00
$ 386.00 - $ 386.00
$ 386.00
$ 309.00
$ 309.00 - $ 309.00
$ 309.00
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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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$ 312.00
$ 312.00 - $ 312.00
$ 312.00
$ 250.00
$ 250.00 - $ 250.00
$ 250.00

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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$ 312.00
$ 312.00 - $ 312.00
$ 312.00
$ 250.00
$ 250.00 - $ 250.00
$ 250.00
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 %
$ 539.00
$ 539.00 - $ 539.00
$ 539.00
$ 433.00
$ 433.00 - $ 433.00
$ 433.00

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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$ 539.00
$ 539.00 - $ 539.00
$ 539.00
$ 433.00
$ 433.00 - $ 433.00
$ 433.00
Save 20% Save %
Save 20% Save %
$ 539.00
$ 539.00 - $ 539.00
$ 539.00
$ 433.00
$ 433.00 - $ 433.00
$ 433.00

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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$ 539.00
$ 539.00 - $ 539.00
$ 539.00
$ 433.00
$ 433.00 - $ 433.00
$ 433.00
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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$ 650.00
$ 650.00 - $ 650.00
$ 650.00
$ 520.00
$ 520.00 - $ 520.00
$ 520.00

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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$ 650.00
$ 650.00 - $ 650.00
$ 650.00
$ 520.00
$ 520.00 - $ 520.00
$ 520.00
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 %
$ 238.00
$ 238.00 - $ 238.00
$ 238.00
$ 190.00
$ 190.00 - $ 190.00
$ 190.00

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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$ 238.00
$ 238.00 - $ 238.00
$ 238.00
$ 190.00
$ 190.00 - $ 190.00
$ 190.00
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 %
$ 136.00
$ 136.00 - $ 136.00
$ 136.00
$ 109.00
$ 109.00 - $ 109.00
$ 109.00

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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$ 136.00
$ 136.00 - $ 136.00
$ 136.00
$ 109.00
$ 109.00 - $ 109.00
$ 109.00
Save 20% Save %

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