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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 %
$ 1,330.00
$ 1,330.00 - $ 1,330.00
$ 1,330.00
$ 1,065.00
$ 1,065.00 - $ 1,065.00
$ 1,065.00

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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$ 1,330.00
$ 1,330.00 - $ 1,330.00
$ 1,330.00
$ 1,065.00
$ 1,065.00 - $ 1,065.00
$ 1,065.00
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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 %
$ 1,390.00
$ 1,390.00 - $ 1,390.00
$ 1,390.00
$ 1,111.00
$ 1,111.00 - $ 1,111.00
$ 1,111.00

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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$ 1,390.00
$ 1,390.00 - $ 1,390.00
$ 1,390.00
$ 1,111.00
$ 1,111.00 - $ 1,111.00
$ 1,111.00
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 %
$ 1,466.00
$ 1,466.00 - $ 1,466.00
$ 1,466.00
$ 1,173.00
$ 1,173.00 - $ 1,173.00
$ 1,173.00

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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$ 1,466.00
$ 1,466.00 - $ 1,466.00
$ 1,466.00
$ 1,173.00
$ 1,173.00 - $ 1,173.00
$ 1,173.00
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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 %
$ 1,280.00
$ 1,280.00 - $ 1,280.00
$ 1,280.00
$ 1,025.00
$ 1,025.00 - $ 1,025.00
$ 1,025.00

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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$ 1,280.00
$ 1,280.00 - $ 1,280.00
$ 1,280.00
$ 1,025.00
$ 1,025.00 - $ 1,025.00
$ 1,025.00
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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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$ 1,313.00
$ 1,313.00 - $ 1,313.00
$ 1,313.00
$ 1,051.00
$ 1,051.00 - $ 1,051.00
$ 1,051.00

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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$ 1,313.00
$ 1,313.00 - $ 1,313.00
$ 1,313.00
$ 1,051.00
$ 1,051.00 - $ 1,051.00
$ 1,051.00
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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 %
$ 1,214.00
$ 1,214.00 - $ 1,214.00
$ 1,214.00
$ 972.00
$ 972.00 - $ 972.00
$ 972.00

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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$ 1,214.00
$ 1,214.00 - $ 1,214.00
$ 1,214.00
$ 972.00
$ 972.00 - $ 972.00
$ 972.00
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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 %
$ 1,383.00
$ 1,383.00 - $ 1,383.00
$ 1,383.00
$ 1,106.00
$ 1,106.00 - $ 1,106.00
$ 1,106.00

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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$ 1,383.00
$ 1,383.00 - $ 1,383.00
$ 1,383.00
$ 1,106.00
$ 1,106.00 - $ 1,106.00
$ 1,106.00
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 %
$ 1,204.00
$ 1,204.00 - $ 1,204.00
$ 1,204.00
$ 963.00
$ 963.00 - $ 963.00
$ 963.00

Foster FM6706, 3/4" Industrial Coupler x 1" Male NPT, 6 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6706 is a Brass 3/4" industrial coupler from the Foster 6 Seri...

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$ 1,204.00
$ 1,204.00 - $ 1,204.00
$ 1,204.00
$ 963.00
$ 963.00 - $ 963.00
$ 963.00
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 %
$ 1,285.00
$ 1,285.00 - $ 1,285.00
$ 1,285.00
$ 1,027.00
$ 1,027.00 - $ 1,027.00
$ 1,027.00

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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$ 1,285.00
$ 1,285.00 - $ 1,285.00
$ 1,285.00
$ 1,027.00
$ 1,027.00 - $ 1,027.00
$ 1,027.00
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 %
$ 1,368.00
$ 1,368.00 - $ 1,368.00
$ 1,368.00
$ 1,096.00
$ 1,096.00 - $ 1,096.00
$ 1,096.00

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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$ 1,368.00
$ 1,368.00 - $ 1,368.00
$ 1,368.00
$ 1,096.00
$ 1,096.00 - $ 1,096.00
$ 1,096.00
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 %
$ 1,361.00
$ 1,361.00 - $ 1,361.00
$ 1,361.00
$ 1,089.00
$ 1,089.00 - $ 1,089.00
$ 1,089.00

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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$ 1,361.00
$ 1,361.00 - $ 1,361.00
$ 1,361.00
$ 1,089.00
$ 1,089.00 - $ 1,089.00
$ 1,089.00
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 %
$ 1,175.00
$ 1,175.00 - $ 1,175.00
$ 1,175.00
$ 941.00
$ 941.00 - $ 941.00
$ 941.00

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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$ 1,175.00
$ 1,175.00 - $ 1,175.00
$ 1,175.00
$ 941.00
$ 941.00 - $ 941.00
$ 941.00
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 %
$ 1,270.00
$ 1,270.00 - $ 1,270.00
$ 1,270.00
$ 1,016.00
$ 1,016.00 - $ 1,016.00
$ 1,016.00

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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$ 1,270.00
$ 1,270.00 - $ 1,270.00
$ 1,270.00
$ 1,016.00
$ 1,016.00 - $ 1,016.00
$ 1,016.00
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 %
$ 1,404.00
$ 1,404.00 - $ 1,404.00
$ 1,404.00
$ 1,123.00
$ 1,123.00 - $ 1,123.00
$ 1,123.00

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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$ 1,404.00
$ 1,404.00 - $ 1,404.00
$ 1,404.00
$ 1,123.00
$ 1,123.00 - $ 1,123.00
$ 1,123.00
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 %
$ 1,400.00
$ 1,400.00 - $ 1,400.00
$ 1,400.00
$ 1,120.00
$ 1,120.00 - $ 1,120.00
$ 1,120.00

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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$ 1,400.00
$ 1,400.00 - $ 1,400.00
$ 1,400.00
$ 1,120.00
$ 1,120.00 - $ 1,120.00
$ 1,120.00
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 %
$ 1,218.00
$ 1,218.00 - $ 1,218.00
$ 1,218.00
$ 975.00
$ 975.00 - $ 975.00
$ 975.00

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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$ 1,218.00
$ 1,218.00 - $ 1,218.00
$ 1,218.00
$ 975.00
$ 975.00 - $ 975.00
$ 975.00
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 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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$ 1,292.00
$ 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 %
$ 1,375.00
$ 1,375.00 - $ 1,375.00
$ 1,375.00
$ 1,101.00
$ 1,101.00 - $ 1,101.00
$ 1,101.00

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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$ 1,375.00
$ 1,375.00 - $ 1,375.00
$ 1,375.00
$ 1,101.00
$ 1,101.00 - $ 1,101.00
$ 1,101.00
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 %
$ 1,173.00
$ 1,173.00 - $ 1,173.00
$ 1,173.00
$ 939.00
$ 939.00 - $ 939.00
$ 939.00

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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$ 1,173.00
$ 1,173.00 - $ 1,173.00
$ 1,173.00
$ 939.00
$ 939.00 - $ 939.00
$ 939.00
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 %
$ 1,276.00
$ 1,276.00 - $ 1,276.00
$ 1,276.00
$ 1,022.00
$ 1,022.00 - $ 1,022.00
$ 1,022.00

Foster FM6406W, 3/4" Industrial Coupler x 3/4" Female NPT, 6 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM6406W is a Brass/SS 3/4" industrial coupler from the Foster 6 ...

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$ 1,276.00
$ 1,276.00 - $ 1,276.00
$ 1,276.00
$ 1,022.00
$ 1,022.00 - $ 1,022.00
$ 1,022.00
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 %
$ 1,357.00
$ 1,357.00 - $ 1,357.00
$ 1,357.00
$ 1,085.00
$ 1,085.00 - $ 1,085.00
$ 1,085.00

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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$ 1,357.00
$ 1,357.00 - $ 1,357.00
$ 1,357.00
$ 1,085.00
$ 1,085.00 - $ 1,085.00
$ 1,085.00
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 %
$ 1,488.00
$ 1,488.00 - $ 1,488.00
$ 1,488.00
$ 1,190.00
$ 1,190.00 - $ 1,190.00
$ 1,190.00

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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$ 1,488.00
$ 1,488.00 - $ 1,488.00
$ 1,488.00
$ 1,190.00
$ 1,190.00 - $ 1,190.00
$ 1,190.00
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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$ 1,221.00
$ 1,221.00 - $ 1,221.00
$ 1,221.00
$ 977.00
$ 977.00 - $ 977.00
$ 977.00

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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$ 1,221.00
$ 1,221.00 - $ 1,221.00
$ 1,221.00
$ 977.00
$ 977.00 - $ 977.00
$ 977.00
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 %
$ 1,354.00
$ 1,354.00 - $ 1,354.00
$ 1,354.00
$ 1,084.00
$ 1,084.00 - $ 1,084.00
$ 1,084.00

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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$ 1,354.00
$ 1,354.00 - $ 1,354.00
$ 1,354.00
$ 1,084.00
$ 1,084.00 - $ 1,084.00
$ 1,084.00
Save 20% Save %

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