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Foster 6 Series Couplers

The Foster 6 Series is the 3/4" body industrial interchange, a high-flow air coupler size for heavy shop and industrial systems. This collection includes 6 Series automatic couplers and plugs in brass and steel with NPT and hose barb 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 %
$ 357.00
$ 357.00 - $ 357.00
$ 357.00
$ 285.00
$ 285.00 - $ 285.00
$ 285.00

Foster 65-6, 3/4" Industrial Plug x 1/2" Female NPT, 6 Series, Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster 65-6 is a Steel 3/4" industrial plug from the Foster 6 Series — ...

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$ 357.00
$ 357.00 - $ 357.00
$ 357.00
$ 285.00
$ 285.00 - $ 285.00
$ 285.00
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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 %
$ 1,723.00
$ 1,723.00 - $ 1,723.00
$ 1,723.00
$ 1,379.00
$ 1,379.00 - $ 1,379.00
$ 1,379.00

Foster SL7006, 3/4" Industrial Coupler x 1" Hose ID, 6 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL7006 is a Brass 3/4" industrial coupler from the Foster 6 Seri...

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$ 1,723.00
$ 1,723.00 - $ 1,723.00
$ 1,723.00
$ 1,379.00
$ 1,379.00 - $ 1,379.00
$ 1,379.00
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 %
$ 1,465.00
$ 1,465.00 - $ 1,465.00
$ 1,465.00
$ 1,172.00
$ 1,172.00 - $ 1,172.00
$ 1,172.00

Foster FM7006, 3/4" Industrial Coupler x 1" Hose ID, 6 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM7006 is a Brass 3/4" industrial coupler from the Foster 6 Seri...

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$ 1,465.00
$ 1,465.00 - $ 1,465.00
$ 1,465.00
$ 1,172.00
$ 1,172.00 - $ 1,172.00
$ 1,172.00
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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 %
$ 1,531.00
$ 1,531.00 - $ 1,531.00
$ 1,531.00
$ 1,224.00
$ 1,224.00 - $ 1,224.00
$ 1,224.00

Foster FM6906W, 3/4" Industrial Coupler x 3/4" Hose ID, 6 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6906W is a Brass/SS 3/4" industrial coupler from the Foster 6 ...

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$ 1,531.00
$ 1,531.00 - $ 1,531.00
$ 1,531.00
$ 1,224.00
$ 1,224.00 - $ 1,224.00
$ 1,224.00
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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$ 1,614.00
$ 1,614.00 - $ 1,614.00
$ 1,614.00
$ 1,292.00
$ 1,292.00 - $ 1,292.00
$ 1,292.00

Foster SL6906, 3/4" Industrial Coupler x 3/4" Hose ID, 6 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL6906 is a Brass 3/4" industrial coupler from the Foster 6 Seri...

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$ 1,614.00
$ 1,614.00 - $ 1,614.00
$ 1,614.00
$ 1,292.00
$ 1,292.00 - $ 1,292.00
$ 1,292.00
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 %
$ 1,410.00
$ 1,410.00 - $ 1,410.00
$ 1,410.00
$ 1,129.00
$ 1,129.00 - $ 1,129.00
$ 1,129.00

Foster FM6906, 3/4" Industrial Coupler x 3/4" Hose ID, 6 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6906 is a Brass 3/4" industrial coupler from the Foster 6 Seri...

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$ 1,410.00
$ 1,410.00 - $ 1,410.00
$ 1,410.00
$ 1,129.00
$ 1,129.00 - $ 1,129.00
$ 1,129.00
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 %
$ 1,446.00
$ 1,446.00 - $ 1,446.00
$ 1,446.00
$ 1,157.00
$ 1,157.00 - $ 1,157.00
$ 1,157.00

Foster FM6806W, 3/4" Industrial Coupler x 1/2" Hose ID, 6 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6806W is a Brass/SS 3/4" industrial coupler from the Foster 6 ...

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$ 1,446.00
$ 1,446.00 - $ 1,446.00
$ 1,446.00
$ 1,157.00
$ 1,157.00 - $ 1,157.00
$ 1,157.00
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 %
$ 1,337.00
$ 1,337.00 - $ 1,337.00
$ 1,337.00
$ 1,070.00
$ 1,070.00 - $ 1,070.00
$ 1,070.00

Foster FM6806, 3/4" Industrial Coupler x 1/2" Hose ID, 6 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6806 is a Brass 3/4" industrial coupler from the Foster 6 Seri...

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$ 1,337.00
$ 1,337.00 - $ 1,337.00
$ 1,337.00
$ 1,070.00
$ 1,070.00 - $ 1,070.00
$ 1,070.00
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 %
$ 1,523.00
$ 1,523.00 - $ 1,523.00
$ 1,523.00
$ 1,218.00
$ 1,218.00 - $ 1,218.00
$ 1,218.00

Foster SL6706, 3/4" Industrial Coupler x 1" Male NPT, 6 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL6706 is a Brass 3/4" industrial coupler from the Foster 6 Seri...

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$ 1,523.00
$ 1,523.00 - $ 1,523.00
$ 1,523.00
$ 1,218.00
$ 1,218.00 - $ 1,218.00
$ 1,218.00
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 %
$ 1,415.00
$ 1,415.00 - $ 1,415.00
$ 1,415.00
$ 1,131.00
$ 1,131.00 - $ 1,131.00
$ 1,131.00

Foster FM6506W, 3/4" Industrial Coupler x 3/4" Male NPT, 6 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6506W is a Brass/SS 3/4" industrial coupler from the Foster 6 ...

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$ 1,415.00
$ 1,415.00 - $ 1,415.00
$ 1,415.00
$ 1,131.00
$ 1,131.00 - $ 1,131.00
$ 1,131.00
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 %
$ 1,506.00
$ 1,506.00 - $ 1,506.00
$ 1,506.00
$ 1,207.00
$ 1,207.00 - $ 1,207.00
$ 1,207.00

Foster FM6506S, 3/4" Industrial Coupler x 3/4" Male NPT, 6 Series, Automatic, Steam/EPDM, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6506S is a Brass/SS 3/4" industrial coupler from the Foster 6 ...

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$ 1,506.00
$ 1,506.00 - $ 1,506.00
$ 1,506.00
$ 1,207.00
$ 1,207.00 - $ 1,207.00
$ 1,207.00
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 %
$ 1,499.00
$ 1,499.00 - $ 1,499.00
$ 1,499.00
$ 1,199.00
$ 1,199.00 - $ 1,199.00
$ 1,199.00

Foster SL6506, 3/4" Industrial Coupler x 3/4" Male NPT, 6 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL6506 is a Brass 3/4" industrial coupler from the Foster 6 Seri...

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$ 1,499.00
$ 1,499.00 - $ 1,499.00
$ 1,499.00
$ 1,199.00
$ 1,199.00 - $ 1,199.00
$ 1,199.00
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 %
$ 1,294.00
$ 1,294.00 - $ 1,294.00
$ 1,294.00
$ 1,036.00
$ 1,036.00 - $ 1,036.00
$ 1,036.00

Foster FM6506, 3/4" Industrial Coupler x 3/4" Male NPT, 6 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6506 is a Brass 3/4" industrial coupler from the Foster 6 Seri...

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$ 1,294.00
$ 1,294.00 - $ 1,294.00
$ 1,294.00
$ 1,036.00
$ 1,036.00 - $ 1,036.00
$ 1,036.00
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 %
$ 1,398.00
$ 1,398.00 - $ 1,398.00
$ 1,398.00
$ 1,119.00
$ 1,119.00 - $ 1,119.00
$ 1,119.00

Foster FM6306W, 3/4" Industrial Coupler x 1/2" Male NPT, 6 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6306W is a Brass/SS 3/4" industrial coupler from the Foster 6 ...

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$ 1,398.00
$ 1,398.00 - $ 1,398.00
$ 1,398.00
$ 1,119.00
$ 1,119.00 - $ 1,119.00
$ 1,119.00
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 %
$ 1,546.00
$ 1,546.00 - $ 1,546.00
$ 1,546.00
$ 1,237.00
$ 1,237.00 - $ 1,237.00
$ 1,237.00

Foster FM6306S, 3/4" Industrial Coupler x 1/2" Male NPT, 6 Series, Automatic, Steam/EPDM, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6306S is a Brass/SS 3/4" industrial coupler from the Foster 6 ...

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$ 1,546.00
$ 1,546.00 - $ 1,546.00
$ 1,546.00
$ 1,237.00
$ 1,237.00 - $ 1,237.00
$ 1,237.00
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 %
$ 1,542.00
$ 1,542.00 - $ 1,542.00
$ 1,542.00
$ 1,233.00
$ 1,233.00 - $ 1,233.00
$ 1,233.00

Foster SL6306, 3/4" Industrial Coupler x 1/2" Male NPT, 6 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL6306 is a Brass 3/4" industrial coupler from the Foster 6 Seri...

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$ 1,542.00
$ 1,542.00 - $ 1,542.00
$ 1,542.00
$ 1,233.00
$ 1,233.00 - $ 1,233.00
$ 1,233.00
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 %
$ 1,341.00
$ 1,341.00 - $ 1,341.00
$ 1,341.00
$ 1,074.00
$ 1,074.00 - $ 1,074.00
$ 1,074.00

Foster FM6306, 3/4" Industrial Coupler x 1/2" Male NPT, 6 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6306 is a Brass 3/4" industrial coupler from the Foster 6 Seri...

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$ 1,341.00
$ 1,341.00 - $ 1,341.00
$ 1,341.00
$ 1,074.00
$ 1,074.00 - $ 1,074.00
$ 1,074.00
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 %
$ 1,423.00
$ 1,423.00 - $ 1,423.00
$ 1,423.00
$ 1,138.00
$ 1,138.00 - $ 1,138.00
$ 1,138.00

Foster FM6606W, 3/4" Industrial Coupler x 1" Female NPT, 6 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6606W is a Brass/SS 3/4" industrial coupler from the Foster 6 ...

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$ 1,423.00
$ 1,423.00 - $ 1,423.00
$ 1,423.00
$ 1,138.00
$ 1,138.00 - $ 1,138.00
$ 1,138.00
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 %
$ 1,514.00
$ 1,514.00 - $ 1,514.00
$ 1,514.00
$ 1,212.00
$ 1,212.00 - $ 1,212.00
$ 1,212.00

Foster SL6606, 3/4" Industrial Coupler x 1" Female NPT, 6 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL6606 is a Brass 3/4" industrial coupler from the Foster 6 Seri...

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$ 1,514.00
$ 1,514.00 - $ 1,514.00
$ 1,514.00
$ 1,212.00
$ 1,212.00 - $ 1,212.00
$ 1,212.00
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 %
$ 1,292.00
$ 1,292.00 - $ 1,292.00
$ 1,292.00
$ 1,034.00
$ 1,034.00 - $ 1,034.00
$ 1,034.00

Foster FM6606, 3/4" Industrial Coupler x 1" Female NPT, 6 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6606 is a Brass 3/4" industrial coupler from the Foster 6 Seri...

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$ 1,292.00
$ 1,292.00 - $ 1,292.00
$ 1,292.00
$ 1,034.00
$ 1,034.00 - $ 1,034.00
$ 1,034.00
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 %
$ 1,495.00
$ 1,495.00 - $ 1,495.00
$ 1,495.00
$ 1,195.00
$ 1,195.00 - $ 1,195.00
$ 1,195.00

Foster FM6406S, 3/4" Industrial Coupler x 3/4" Female NPT, 6 Series, Automatic, Steam/EPDM, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6406S is a Brass/SS 3/4" industrial coupler from the Foster 6 ...

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$ 1,495.00
$ 1,495.00 - $ 1,495.00
$ 1,495.00
$ 1,195.00
$ 1,195.00 - $ 1,195.00
$ 1,195.00
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 %
$ 1,639.00
$ 1,639.00 - $ 1,639.00
$ 1,639.00
$ 1,311.00
$ 1,311.00 - $ 1,311.00
$ 1,311.00

Foster SL6406H, 3/4" Industrial Coupler x 3/4" Female NPT, 6 Series, Automatic Sleeve Lock, Heat/Viton, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL6406H is a Brass 3/4" industrial coupler from the Foster 6 Ser...

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$ 1,639.00
$ 1,639.00 - $ 1,639.00
$ 1,639.00
$ 1,311.00
$ 1,311.00 - $ 1,311.00
$ 1,311.00
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 %
$ 1,345.00
$ 1,345.00 - $ 1,345.00
$ 1,345.00
$ 1,076.00
$ 1,076.00 - $ 1,076.00
$ 1,076.00

Foster FM6406H, 3/4" Industrial Coupler x 3/4" Female NPT, 6 Series, Automatic, Heat/Viton, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6406H is a Brass 3/4" industrial coupler from the Foster 6 Ser...

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$ 1,345.00
$ 1,345.00 - $ 1,345.00
$ 1,345.00
$ 1,076.00
$ 1,076.00 - $ 1,076.00
$ 1,076.00
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 %
$ 1,491.00
$ 1,491.00 - $ 1,491.00
$ 1,491.00
$ 1,193.00
$ 1,193.00 - $ 1,193.00
$ 1,193.00

Foster SL6406, 3/4" Industrial Coupler x 3/4" Female NPT, 6 Series, Automatic Sleeve Lock, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster SL6406 is a Brass 3/4" industrial coupler from the Foster 6 Seri...

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$ 1,491.00
$ 1,491.00 - $ 1,491.00
$ 1,491.00
$ 1,193.00
$ 1,193.00 - $ 1,193.00
$ 1,193.00
Save 20% Save %

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