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Hydraulic Quick Couplers

Hydraulic quick couplers join high-pressure fluid lines with a secure, leak-free connection. This collection covers ISO-B, ISO-A, flush face, and specialty hydraulic couplers and plugs in steel, brass, and stainless. Filter by series, body size, thread, and material to match your hydraulic system.

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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 %
$ 10.19
$ 10.19 - $ 10.19
$ 10.19
$ 8.19
$ 8.19 - $ 8.19
$ 8.19

Foster FSS316-6410-04-06, 1/4" ORB (7/16"-20 thread) Male x 3/8" ORB (9/16"-18 thread) Female, 316 Stainless

The Foster FSS316-6410-04-06 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1/4" ORB (7/16"-20 thread) Male x 3/8" ORB (9/16"-18 thread) F...

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$ 10.19
$ 10.19 - $ 10.19
$ 10.19
$ 8.19
$ 8.19 - $ 8.19
$ 8.19
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 %
$ 7.69
$ 7.69 - $ 7.69
$ 7.69
$ 6.09
$ 6.09 - $ 6.09
$ 6.09

Foster FSS316-6410-04-04, 1/4" ORB (7/16"-20 thread) Male x 1/4" ORB (7/16"-20 thread) Female, 316 Stainless

The Foster FSS316-6410-04-04 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1/4" ORB (7/16"-20 thread) Male x 1/4" ORB (7/16"-20 thread) F...

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$ 7.69
$ 7.69 - $ 7.69
$ 7.69
$ 6.09
$ 6.09 - $ 6.09
$ 6.09
Save 21% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 21% Save %
$ 7.69
$ 7.69 - $ 7.69
$ 7.69
$ 6.09
$ 6.09 - $ 6.09
$ 6.09

Foster FSS316-6408-04, 1/4" ORB (7/16"-20 thread) Male Hex Head Plug, 316 Stainless

The Foster FSS316-6408-04 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1/4" ORB (7/16"-20 thread) Male Hex Head Plug. Machined for leak-...

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$ 7.69
$ 7.69 - $ 7.69
$ 7.69
$ 6.09
$ 6.09 - $ 6.09
$ 6.09
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 %
$ 12.79
$ 12.79 - $ 12.79
$ 12.79
$ 10.19
$ 10.19 - $ 10.19
$ 10.19

Foster FSS316-6408-08, 1/2" ORB (3/4"-16 thread) Male Hex Head Plug, 316 Stainless

The Foster FSS316-6408-08 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1/2" ORB (3/4"-16 thread) Male Hex Head Plug. Machined for leak-t...

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$ 12.79
$ 12.79 - $ 12.79
$ 12.79
$ 10.19
$ 10.19 - $ 10.19
$ 10.19
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 %
$ 15.39
$ 15.39 - $ 15.39
$ 15.39
$ 12.29
$ 12.29 - $ 12.29
$ 12.29

Foster FSS316-6408-10, 5/8" ORB (7/8"-14 thread) Male Hex Head Plug, 316 Stainless

The Foster FSS316-6408-10 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 5/8" ORB (7/8"-14 thread) Male Hex Head Plug. Machined for leak-t...

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$ 15.39
$ 15.39 - $ 15.39
$ 15.39
$ 12.29
$ 12.29 - $ 12.29
$ 12.29
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 %
$ 33.29
$ 33.29 - $ 33.29
$ 33.29
$ 26.59
$ 26.59 - $ 26.59
$ 26.59

Foster FSS316-6407-10-10, 5/8" ORB (7/8"-14 thread) Male Swivel Union, 316 Stainless

The Foster FSS316-6407-10-10 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 5/8" ORB (7/8"-14 thread) Male Swivel Union. Machined for leak...

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$ 33.29
$ 33.29 - $ 33.29
$ 33.29
$ 26.59
$ 26.59 - $ 26.59
$ 26.59
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 %
$ 8.99
$ 8.99 - $ 8.99
$ 8.99
$ 7.19
$ 7.19 - $ 7.19
$ 7.19

Foster FSS316-6408-05, 5/16" ORB (1/2"-20 thread) Male Hex Head Plug, 316 Stainless

The Foster FSS316-6408-05 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 5/16" ORB (1/2"-20 thread) Male Hex Head Plug. Machined for leak-...

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$ 8.99
$ 8.99 - $ 8.99
$ 8.99
$ 7.19
$ 7.19 - $ 7.19
$ 7.19
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 %
$ 6.39
$ 6.39 - $ 6.39
$ 6.39
$ 5.09
$ 5.09 - $ 5.09
$ 5.09

Foster FSS316-6408-03, 3/16" ORB (3/8"-24 thread) Male Hex Head Plug, 316 Stainless

The Foster FSS316-6408-03 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 3/16" ORB (3/8"-24 thread) Male Hex Head Plug. Machined for leak-...

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$ 6.39
$ 6.39 - $ 6.39
$ 6.39
$ 5.09
$ 5.09 - $ 5.09
$ 5.09
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 %
$ 40.99
$ 40.99 - $ 40.99
$ 40.99
$ 32.79
$ 32.79 - $ 32.79
$ 32.79

Foster FSS316-6407-12-12, 3/4" ORB (1 1/16"-12 thread) Male Swivel Union, 316 Stainless

The Foster FSS316-6407-12-12 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 3/4" ORB (1 1/16"-12 thread) Male Swivel Union. Machined for l...

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$ 40.99
$ 40.99 - $ 40.99
$ 40.99
$ 32.79
$ 32.79 - $ 32.79
$ 32.79
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 %
$ 28.19
$ 28.19 - $ 28.19
$ 28.19
$ 22.49
$ 22.49 - $ 22.49
$ 22.49

Foster FSS316-6407-08-08, 1/2" ORB (3/4"-16 thread) Male Swivel Union, 316 Stainless

The Foster FSS316-6407-08-08 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1/2" ORB (3/4"-16 thread) Male Swivel Union. Machined for leak...

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$ 28.19
$ 28.19 - $ 28.19
$ 28.19
$ 22.49
$ 22.49 - $ 22.49
$ 22.49
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 %
$ 5.09
$ 5.09 - $ 5.09
$ 5.09
$ 4.09
$ 4.09 - $ 4.09
$ 4.09

Foster FSS316-6408-02, 1/8" ORB (5/16"-24 thread) Male Hex Head Plug, 316 Stainless

The Foster FSS316-6408-02 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1/8" ORB (5/16"-24 thread) Male Hex Head Plug. Machined for leak-...

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$ 5.09
$ 5.09 - $ 5.09
$ 5.09
$ 4.09
$ 4.09 - $ 4.09
$ 4.09
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 %
$ 53.69
$ 53.69 - $ 53.69
$ 53.69
$ 42.99
$ 42.99 - $ 42.99
$ 42.99

Foster FSS316-6407-16-16, 1" ORB (1 5/16"-12 thread) Male Swivel Union, 316 Stainless

The Foster FSS316-6407-16-16 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1" ORB (1 5/16"-12 thread) Male Swivel Union. Machined for lea...

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$ 53.69
$ 53.69 - $ 53.69
$ 53.69
$ 42.99
$ 42.99 - $ 42.99
$ 42.99
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 %
$ 23.09
$ 23.09 - $ 23.09
$ 23.09
$ 18.49
$ 18.49 - $ 18.49
$ 18.49

Foster FSS316-6407-06-06, 3/8" ORB (9/16"-18 thread) Male Swivel Union, 316 Stainless

The Foster FSS316-6407-06-06 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 3/8" ORB (9/16"-18 thread) Male Swivel Union. Machined for lea...

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$ 23.09
$ 23.09 - $ 23.09
$ 23.09
$ 18.49
$ 18.49 - $ 18.49
$ 18.49
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 %
$ 17.89
$ 17.89 - $ 17.89
$ 17.89
$ 14.29
$ 14.29 - $ 14.29
$ 14.29

Foster FSS316-6407-04-04, 1/4" ORB (7/16"-20 thread) Male Swivel Union, 316 Stainless

The Foster FSS316-6407-04-04 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1/4" ORB (7/16"-20 thread) Male Swivel Union. Machined for lea...

View full details
$ 17.89
$ 17.89 - $ 17.89
$ 17.89
$ 14.29
$ 14.29 - $ 14.29
$ 14.29
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 %
$ 35.89
$ 35.89 - $ 35.89
$ 35.89
$ 28.69
$ 28.69 - $ 28.69
$ 28.69

Foster FSS316-6405-16-08, 1" ORB (1 5/16"-12 thread) Male x 1/2" Female Pipe, 316 Stainless

The Foster FSS316-6405-16-08 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1" ORB (1 5/16"-12 thread) Male x 1/2" Female Pipe. Machined f...

View full details
$ 35.89
$ 35.89 - $ 35.89
$ 35.89
$ 28.69
$ 28.69 - $ 28.69
$ 28.69
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 %
$ 35.89
$ 35.89 - $ 35.89
$ 35.89
$ 28.69
$ 28.69 - $ 28.69
$ 28.69

Foster FSS316-6405-16-16, 1" ORB (1 5/16"-12 thread) Male x 1" Female Pipe, 316 Stainless

The Foster FSS316-6405-16-16 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1" ORB (1 5/16"-12 thread) Male x 1" Female Pipe. Machined for...

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$ 35.89
$ 35.89 - $ 35.89
$ 35.89
$ 28.69
$ 28.69 - $ 28.69
$ 28.69
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 %
$ 23.09
$ 23.09 - $ 23.09
$ 23.09
$ 18.49
$ 18.49 - $ 18.49
$ 18.49

Foster FSS316-6405-12-12, 3/4" ORB (1 1/16"-12 thread) Male x 3/4" Female Pipe, 316 Stainless

The Foster FSS316-6405-12-12 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 3/4" ORB (1 1/16"-12 thread) Male x 3/4" Female Pipe. Machined...

View full details
$ 23.09
$ 23.09 - $ 23.09
$ 23.09
$ 18.49
$ 18.49 - $ 18.49
$ 18.49
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 %
$ 35.89
$ 35.89 - $ 35.89
$ 35.89
$ 28.69
$ 28.69 - $ 28.69
$ 28.69

Foster FSS316-6405-16-12, 1" ORB (1 5/16"-12 thread) Male x 3/4" Female Pipe, 316 Stainless

The Foster FSS316-6405-16-12 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1" ORB (1 5/16"-12 thread) Male x 3/4" Female Pipe. Machined f...

View full details
$ 35.89
$ 35.89 - $ 35.89
$ 35.89
$ 28.69
$ 28.69 - $ 28.69
$ 28.69
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 %
$ 23.09
$ 23.09 - $ 23.09
$ 23.09
$ 18.49
$ 18.49 - $ 18.49
$ 18.49

Foster FSS316-6405-12-08, 3/4" ORB (1 1/16"-12 thread) Male x 1/2" Female Pipe, 316 Stainless

The Foster FSS316-6405-12-08 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 3/4" ORB (1 1/16"-12 thread) Male x 1/2" Female Pipe. Machined...

View full details
$ 23.09
$ 23.09 - $ 23.09
$ 23.09
$ 18.49
$ 18.49 - $ 18.49
$ 18.49
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 %
$ 29.39
$ 29.39 - $ 29.39
$ 29.39
$ 23.59
$ 23.59 - $ 23.59
$ 23.59

Foster FSS316-6405-14-12, 7/8" ORB (1 3/16"-12 thread) Male x 3/5" Female Pipe, 316 Stainless

The Foster FSS316-6405-14-12 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 7/8" ORB (1 3/16"-12 thread) Male x 3/5" Female Pipe. Machined...

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$ 29.39
$ 29.39 - $ 29.39
$ 29.39
$ 23.59
$ 23.59 - $ 23.59
$ 23.59
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 %
$ 29.39
$ 29.39 - $ 29.39
$ 29.39
$ 23.59
$ 23.59 - $ 23.59
$ 23.59

Foster FSS316-6405-14-08, 7/8" ORB (1 3/16"-12 thread) Male x 1/2" Female Pipe, 316 Stainless

The Foster FSS316-6405-14-08 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 7/8" ORB (1 3/16"-12 thread) Male x 1/2" Female Pipe. Machined...

View full details
$ 29.39
$ 29.39 - $ 29.39
$ 29.39
$ 23.59
$ 23.59 - $ 23.59
$ 23.59
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 %
$ 23.09
$ 23.09 - $ 23.09
$ 23.09
$ 18.49
$ 18.49 - $ 18.49
$ 18.49

Foster FSS316-6405-10-12, 5/8" ORB (7/8"-14 thread) Male x 3/4" Female Pipe, 316 Stainless

The Foster FSS316-6405-10-12 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 5/8" ORB (7/8"-14 thread) Male x 3/4" Female Pipe. Machined fo...

View full details
$ 23.09
$ 23.09 - $ 23.09
$ 23.09
$ 18.49
$ 18.49 - $ 18.49
$ 18.49
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 %
$ 16.59
$ 16.59 - $ 16.59
$ 16.59
$ 13.29
$ 13.29 - $ 13.29
$ 13.29

Foster FSS316-6405-10-08, 5/8" ORB (7/8"-14 thread) Male x 1/2" Female Pipe, 316 Stainless

The Foster FSS316-6405-10-08 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 5/8" ORB (7/8"-14 thread) Male x 1/2" Female Pipe. Machined fo...

View full details
$ 16.59
$ 16.59 - $ 16.59
$ 16.59
$ 13.29
$ 13.29 - $ 13.29
$ 13.29
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 %
$ 23.09
$ 23.09 - $ 23.09
$ 23.09
$ 18.49
$ 18.49 - $ 18.49
$ 18.49

Foster FSS316-6405-12-04, 3/4" ORB (1 1/16"-12 thread) Male x 1/4" Female Pipe, 316 Stainless

The Foster FSS316-6405-12-04 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 3/4" ORB (1 1/16"-12 thread) Male x 1/4" Female Pipe. Machined...

View full details
$ 23.09
$ 23.09 - $ 23.09
$ 23.09
$ 18.49
$ 18.49 - $ 18.49
$ 18.49
Save 20% Save %

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