Skip to content
Fall Ready Sale15% off everything through Oct 31FALLREADY15Tap to apply at checkout →
15% off through Oct 31FALLREADY15Tap to apply →

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.

Filters

Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 1,034.00
$ 1,034.00 - $ 1,034.00
$ 1,034.00
$ 828.00
$ 828.00 - $ 828.00
$ 828.00

Foster BLSP13-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 1/2" ID x 13/16" OD, 5 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster BLSP13-5 is a Brass/Steel 1/2" industrial coupler from the Foste...

View full details
$ 1,034.00
$ 1,034.00 - $ 1,034.00
$ 1,034.00
$ 828.00
$ 828.00 - $ 828.00
$ 828.00
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 %
$ 1,119.00
$ 1,119.00 - $ 1,119.00
$ 1,119.00
$ 896.00
$ 896.00 - $ 896.00
$ 896.00

Foster BLSP15-5, 1/2" Industrial Coupler x Reusable Hose Fitting, 1/2" ID x 7/8" OD, 5 Series, Ball Lock, Brass/Steel

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster BLSP15-5 is a Brass/Steel 1/2" industrial coupler from the Foste...

View full details
$ 1,119.00
$ 1,119.00 - $ 1,119.00
$ 1,119.00
$ 896.00
$ 896.00 - $ 896.00
$ 896.00
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 %
$ 748.00
$ 748.00 - $ 748.00
$ 748.00
$ 598.00
$ 598.00 - $ 598.00
$ 598.00

Foster FM1815, 1/2" Industrial Coupler x 1/2" Push-On Hose Stem, 5 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM1815 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

View full details
$ 748.00
$ 748.00 - $ 748.00
$ 748.00
$ 598.00
$ 598.00 - $ 598.00
$ 598.00
Save 20% Save %
Save 20% Save %
$ 748.00
$ 748.00 - $ 748.00
$ 748.00
$ 598.00
$ 598.00 - $ 598.00
$ 598.00

Foster FM1815, 5 Series, Industrial Coupler, Automatic, 1/2" Push-On Hose Barb, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM1815 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

View full details
$ 748.00
$ 748.00 - $ 748.00
$ 748.00
$ 598.00
$ 598.00 - $ 598.00
$ 598.00
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 %
$ 775.00
$ 775.00 - $ 775.00
$ 775.00
$ 621.00
$ 621.00 - $ 621.00
$ 621.00

Foster FM4015, 1/2" Industrial Coupler x 1/4" Female NPT, 5 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM4015 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

View full details
$ 775.00
$ 775.00 - $ 775.00
$ 775.00
$ 621.00
$ 621.00 - $ 621.00
$ 621.00
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 %
$ 792.00
$ 792.00 - $ 792.00
$ 792.00
$ 633.00
$ 633.00 - $ 633.00
$ 633.00

Foster FM4905, 1/2" Industrial Coupler x 1/4" Male NPT, 5 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM4905 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

View full details
$ 792.00
$ 792.00 - $ 792.00
$ 792.00
$ 633.00
$ 633.00 - $ 633.00
$ 633.00
Save 20% Save %
Save 20% Save %
$ 792.00
$ 792.00 - $ 792.00
$ 792.00
$ 633.00
$ 633.00 - $ 633.00
$ 633.00

Foster FM4905, 5 Series, Industrial Coupler, Automatic, 1/4" Hose Barb, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM4905 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

View full details
$ 792.00
$ 792.00 - $ 792.00
$ 792.00
$ 633.00
$ 633.00 - $ 633.00
$ 633.00
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 %
$ 799.00
$ 799.00 - $ 799.00
$ 799.00
$ 638.00
$ 638.00 - $ 638.00
$ 638.00

Foster FM5005, 1/2" Industrial Coupler x 3/8" Female NPT, 5 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5005 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

View full details
$ 799.00
$ 799.00 - $ 799.00
$ 799.00
$ 638.00
$ 638.00 - $ 638.00
$ 638.00
Save 20% Save %
Save 20% Save %
$ 799.00
$ 799.00 - $ 799.00
$ 799.00
$ 638.00
$ 638.00 - $ 638.00
$ 638.00

Foster FM5005, 5 Series, Industrial Coupler, Automatic, 3/8" Female NPT, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5005 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

View full details
$ 799.00
$ 799.00 - $ 799.00
$ 799.00
$ 638.00
$ 638.00 - $ 638.00
$ 638.00
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 %
$ 879.00
$ 879.00 - $ 879.00
$ 879.00
$ 704.00
$ 704.00 - $ 704.00
$ 704.00

Foster FM5005H, 1/2" Industrial Coupler x 3/8" Female NPT, 5 Series, Automatic, Heat/Viton, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5005H is a Brass 1/2" industrial coupler from the Foster 5 Ser...

View full details
$ 879.00
$ 879.00 - $ 879.00
$ 879.00
$ 704.00
$ 704.00 - $ 704.00
$ 704.00
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 %
$ 966.00
$ 966.00 - $ 966.00
$ 966.00
$ 773.00
$ 773.00 - $ 773.00
$ 773.00

Foster FM5005S, 1/2" Industrial Coupler x 3/8" Female NPT, 5 Series, Automatic, Steam/EPDM, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5005S is a Brass/SS 1/2" industrial coupler from the Foster 5 ...

View full details
$ 966.00
$ 966.00 - $ 966.00
$ 966.00
$ 773.00
$ 773.00 - $ 773.00
$ 773.00
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 %
$ 896.00
$ 896.00 - $ 896.00
$ 896.00
$ 716.00
$ 716.00 - $ 716.00
$ 716.00

Foster FM5005W, 1/2" Industrial Coupler x 3/8" Female NPT, 5 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5005W is a Brass/SS 1/2" industrial coupler from the Foster 5 ...

View full details
$ 896.00
$ 896.00 - $ 896.00
$ 896.00
$ 716.00
$ 716.00 - $ 716.00
$ 716.00
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 %
$ 807.00
$ 807.00 - $ 807.00
$ 807.00
$ 646.00
$ 646.00 - $ 646.00
$ 646.00

Foster FM5105, 1/2" Industrial Coupler x 3/8" Male NPT, 5 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5105 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

View full details
$ 807.00
$ 807.00 - $ 807.00
$ 807.00
$ 646.00
$ 646.00 - $ 646.00
$ 646.00
Save 20% Save %
Save 20% Save %
$ 807.00
$ 807.00 - $ 807.00
$ 807.00
$ 646.00
$ 646.00 - $ 646.00
$ 646.00

Foster FM5105, 5 Series, Industrial Coupler, Automatic, 3/8" Male NPT, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5105 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

View full details
$ 807.00
$ 807.00 - $ 807.00
$ 807.00
$ 646.00
$ 646.00 - $ 646.00
$ 646.00
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 %
$ 795.00
$ 795.00 - $ 795.00
$ 795.00
$ 636.00
$ 636.00 - $ 636.00
$ 636.00

Foster FM5205, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5205 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

View full details
$ 795.00
$ 795.00 - $ 795.00
$ 795.00
$ 636.00
$ 636.00 - $ 636.00
$ 636.00
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 %
$ 903.00
$ 903.00 - $ 903.00
$ 903.00
$ 722.00
$ 722.00 - $ 722.00
$ 722.00

Foster FM5205H, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, Automatic, Heat/Viton, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5205H is a Brass 1/2" industrial coupler from the Foster 5 Ser...

View full details
$ 903.00
$ 903.00 - $ 903.00
$ 903.00
$ 722.00
$ 722.00 - $ 722.00
$ 722.00
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 %
$ 818.00
$ 818.00 - $ 818.00
$ 818.00
$ 653.00
$ 653.00 - $ 653.00
$ 653.00

Foster FM5205LV, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, Automatic, Less Valve, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5205LV is a Brass 1/2" industrial coupler from the Foster 5 Se...

View full details
$ 818.00
$ 818.00 - $ 818.00
$ 818.00
$ 653.00
$ 653.00 - $ 653.00
$ 653.00
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 %
$ 987.00
$ 987.00 - $ 987.00
$ 987.00
$ 790.00
$ 790.00 - $ 790.00
$ 790.00

Foster FM5205S, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, Automatic, Steam/EPDM, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5205S is a Brass/SS 1/2" industrial coupler from the Foster 5 ...

View full details
$ 987.00
$ 987.00 - $ 987.00
$ 987.00
$ 790.00
$ 790.00 - $ 790.00
$ 790.00
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 %
$ 915.00
$ 915.00 - $ 915.00
$ 915.00
$ 731.00
$ 731.00 - $ 731.00
$ 731.00

Foster FM5205W, 1/2" Industrial Coupler x 1/2" Female NPT, 5 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5205W is a Brass/SS 1/2" industrial coupler from the Foster 5 ...

View full details
$ 915.00
$ 915.00 - $ 915.00
$ 915.00
$ 731.00
$ 731.00 - $ 731.00
$ 731.00
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 %
$ 829.00
$ 829.00 - $ 829.00
$ 829.00
$ 663.00
$ 663.00 - $ 663.00
$ 663.00

Foster FM5305, 1/2" Industrial Coupler x 1/2" Male NPT, 5 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5305 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

View full details
$ 829.00
$ 829.00 - $ 829.00
$ 829.00
$ 663.00
$ 663.00 - $ 663.00
$ 663.00
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 %
$ 960.00
$ 960.00 - $ 960.00
$ 960.00
$ 769.00
$ 769.00 - $ 769.00
$ 769.00

Foster FM5305S, 1/2" Industrial Coupler x 1/2" Male NPT, 5 Series, Automatic, Steam/EPDM, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5305S is a Brass/SS 1/2" industrial coupler from the Foster 5 ...

View full details
$ 960.00
$ 960.00 - $ 960.00
$ 960.00
$ 769.00
$ 769.00 - $ 769.00
$ 769.00
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 %
$ 922.00
$ 922.00 - $ 922.00
$ 922.00
$ 739.00
$ 739.00 - $ 739.00
$ 739.00

Foster FM5305W, 1/2" Industrial Coupler x 1/2" Male NPT, 5 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5305W is a Brass/SS 1/2" industrial coupler from the Foster 5 ...

View full details
$ 922.00
$ 922.00 - $ 922.00
$ 922.00
$ 739.00
$ 739.00 - $ 739.00
$ 739.00
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 %
$ 820.00
$ 820.00 - $ 820.00
$ 820.00
$ 657.00
$ 657.00 - $ 657.00
$ 657.00

Foster FM5405, 1/2" Industrial Coupler x 3/4" Female NPT, 5 Series, Automatic, Brass

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5405 is a Brass 1/2" industrial coupler from the Foster 5 Seri...

View full details
$ 820.00
$ 820.00 - $ 820.00
$ 820.00
$ 657.00
$ 657.00 - $ 657.00
$ 657.00
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 %
$ 930.00
$ 930.00 - $ 930.00
$ 930.00
$ 744.00
$ 744.00 - $ 744.00
$ 744.00

Foster FM5405W, 1/2" Industrial Coupler x 3/4" Female NPT, 5 Series, Automatic, Water, Brass/SS

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster FM5405W is a Brass/SS 1/2" industrial coupler from the Foster 5 ...

View full details
$ 930.00
$ 930.00 - $ 930.00
$ 930.00
$ 744.00
$ 744.00 - $ 744.00
$ 744.00
Save 20% Save %

Request a Quote

Bulk and dealer pricing. Tell us what you need and we’ll reply within one business day.