Skip to content
☀️ Take an Additional 10% Off Your Entire Order with code GEARUP10 at checkout.
☀️ Additional 10% Off • GEARUP10

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.

Filters

Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 19% Save %
$ 180.00
$ 180.00 - $ 180.00
$ 180.00
$ 145.00
$ 145.00 - $ 145.00
$ 145.00

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...

View full details
$ 180.00
$ 180.00 - $ 180.00
$ 180.00
$ 145.00
$ 145.00 - $ 145.00
$ 145.00
Save 19% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 21% Save %
$ 136.00
$ 136.00 - $ 136.00
$ 136.00
$ 108.00
$ 108.00 - $ 108.00
$ 108.00

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...

View full details
$ 136.00
$ 136.00 - $ 136.00
$ 136.00
$ 108.00
$ 108.00 - $ 108.00
$ 108.00
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 %
$ 136.00
$ 136.00 - $ 136.00
$ 136.00
$ 108.00
$ 108.00 - $ 108.00
$ 108.00

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-...

View full details
$ 136.00
$ 136.00 - $ 136.00
$ 136.00
$ 108.00
$ 108.00 - $ 108.00
$ 108.00
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 %
$ 226.00
$ 226.00 - $ 226.00
$ 226.00
$ 180.00
$ 180.00 - $ 180.00
$ 180.00

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...

View full details
$ 226.00
$ 226.00 - $ 226.00
$ 226.00
$ 180.00
$ 180.00 - $ 180.00
$ 180.00
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 %
$ 272.00
$ 272.00 - $ 272.00
$ 272.00
$ 217.00
$ 217.00 - $ 217.00
$ 217.00

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...

View full details
$ 272.00
$ 272.00 - $ 272.00
$ 272.00
$ 217.00
$ 217.00 - $ 217.00
$ 217.00
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 %
$ 587.00
$ 587.00 - $ 587.00
$ 587.00
$ 469.00
$ 469.00 - $ 469.00
$ 469.00

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...

View full details
$ 587.00
$ 587.00 - $ 587.00
$ 587.00
$ 469.00
$ 469.00 - $ 469.00
$ 469.00
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 %
$ 159.00
$ 159.00 - $ 159.00
$ 159.00
$ 127.00
$ 127.00 - $ 127.00
$ 127.00

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-...

View full details
$ 159.00
$ 159.00 - $ 159.00
$ 159.00
$ 127.00
$ 127.00 - $ 127.00
$ 127.00
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 %
$ 113.00
$ 113.00 - $ 113.00
$ 113.00
$ 90.00
$ 90.00 - $ 90.00
$ 90.00

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-...

View full details
$ 113.00
$ 113.00 - $ 113.00
$ 113.00
$ 90.00
$ 90.00 - $ 90.00
$ 90.00
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 %
$ 723.00
$ 723.00 - $ 723.00
$ 723.00
$ 578.00
$ 578.00 - $ 578.00
$ 578.00

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...

View full details
$ 723.00
$ 723.00 - $ 723.00
$ 723.00
$ 578.00
$ 578.00 - $ 578.00
$ 578.00
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 %
$ 497.00
$ 497.00 - $ 497.00
$ 497.00
$ 397.00
$ 397.00 - $ 397.00
$ 397.00

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...

View full details
$ 497.00
$ 497.00 - $ 497.00
$ 497.00
$ 397.00
$ 397.00 - $ 397.00
$ 397.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 19% Save %
$ 90.00
$ 90.00 - $ 90.00
$ 90.00
$ 73.00
$ 73.00 - $ 73.00
$ 73.00

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-...

View full details
$ 90.00
$ 90.00 - $ 90.00
$ 90.00
$ 73.00
$ 73.00 - $ 73.00
$ 73.00
Save 19% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 946.00
$ 946.00 - $ 946.00
$ 946.00
$ 758.00
$ 758.00 - $ 758.00
$ 758.00

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...

View full details
$ 946.00
$ 946.00 - $ 946.00
$ 946.00
$ 758.00
$ 758.00 - $ 758.00
$ 758.00
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 %
$ 407.00
$ 407.00 - $ 407.00
$ 407.00
$ 326.00
$ 326.00 - $ 326.00
$ 326.00

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...

View full details
$ 407.00
$ 407.00 - $ 407.00
$ 407.00
$ 326.00
$ 326.00 - $ 326.00
$ 326.00
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 %
$ 316.00
$ 316.00 - $ 316.00
$ 316.00
$ 252.00
$ 252.00 - $ 252.00
$ 252.00

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
$ 316.00
$ 316.00 - $ 316.00
$ 316.00
$ 252.00
$ 252.00 - $ 252.00
$ 252.00
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 %
$ 633.00
$ 633.00 - $ 633.00
$ 633.00
$ 506.00
$ 506.00 - $ 506.00
$ 506.00

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
$ 633.00
$ 633.00 - $ 633.00
$ 633.00
$ 506.00
$ 506.00 - $ 506.00
$ 506.00
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 %
$ 633.00
$ 633.00 - $ 633.00
$ 633.00
$ 506.00
$ 506.00 - $ 506.00
$ 506.00

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...

View full details
$ 633.00
$ 633.00 - $ 633.00
$ 633.00
$ 506.00
$ 506.00 - $ 506.00
$ 506.00
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 %
$ 407.00
$ 407.00 - $ 407.00
$ 407.00
$ 326.00
$ 326.00 - $ 326.00
$ 326.00

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
$ 407.00
$ 407.00 - $ 407.00
$ 407.00
$ 326.00
$ 326.00 - $ 326.00
$ 326.00
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 %
$ 633.00
$ 633.00 - $ 633.00
$ 633.00
$ 506.00
$ 506.00 - $ 506.00
$ 506.00

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
$ 633.00
$ 633.00 - $ 633.00
$ 633.00
$ 506.00
$ 506.00 - $ 506.00
$ 506.00
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 %
$ 407.00
$ 407.00 - $ 407.00
$ 407.00
$ 326.00
$ 326.00 - $ 326.00
$ 326.00

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
$ 407.00
$ 407.00 - $ 407.00
$ 407.00
$ 326.00
$ 326.00 - $ 326.00
$ 326.00
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 %
$ 518.00
$ 518.00 - $ 518.00
$ 518.00
$ 416.00
$ 416.00 - $ 416.00
$ 416.00

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...

View full details
$ 518.00
$ 518.00 - $ 518.00
$ 518.00
$ 416.00
$ 416.00 - $ 416.00
$ 416.00
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 %
$ 518.00
$ 518.00 - $ 518.00
$ 518.00
$ 416.00
$ 416.00 - $ 416.00
$ 416.00

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
$ 518.00
$ 518.00 - $ 518.00
$ 518.00
$ 416.00
$ 416.00 - $ 416.00
$ 416.00
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 %
$ 407.00
$ 407.00 - $ 407.00
$ 407.00
$ 326.00
$ 326.00 - $ 326.00
$ 326.00

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
$ 407.00
$ 407.00 - $ 407.00
$ 407.00
$ 326.00
$ 326.00 - $ 326.00
$ 326.00
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 %
$ 293.00
$ 293.00 - $ 293.00
$ 293.00
$ 235.00
$ 235.00 - $ 235.00
$ 235.00

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
$ 293.00
$ 293.00 - $ 293.00
$ 293.00
$ 235.00
$ 235.00 - $ 235.00
$ 235.00
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 %
$ 407.00
$ 407.00 - $ 407.00
$ 407.00
$ 326.00
$ 326.00 - $ 326.00
$ 326.00

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
$ 407.00
$ 407.00 - $ 407.00
$ 407.00
$ 326.00
$ 326.00 - $ 326.00
$ 326.00
Save 20% Save %

Request a Quote

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