Skip to content

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 20% Save %
$ 244.00
$ 244.00 - $ 244.00
$ 244.00
$ 196.00
$ 196.00 - $ 196.00
$ 196.00

Foster FSS316-6404-08-08, 1/2" ORB (3/4"-16 thread) Female x 1/2" Male Pipe, 316 Stainless

The Foster FSS316-6404-08-08 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1/2" ORB (3/4"-16 thread) Female x 1/2" Male Pipe. Machined fo...

View full details
$ 244.00
$ 244.00 - $ 244.00
$ 244.00
$ 196.00
$ 196.00 - $ 196.00
$ 196.00
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 %
$ 310.00
$ 310.00 - $ 310.00
$ 310.00
$ 247.00
$ 247.00 - $ 247.00
$ 247.00

Foster FSS316-6404-10-08, 5/8" ORB (7/8"-14 thread) Female x 1/2" Male Pipe, 316 Stainless

The Foster FSS316-6404-10-08 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 5/8" ORB (7/8"-14 thread) Female x 1/2" Male Pipe. Machined fo...

View full details
$ 310.00
$ 310.00 - $ 310.00
$ 310.00
$ 247.00
$ 247.00 - $ 247.00
$ 247.00
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 %
$ 332.00
$ 332.00 - $ 332.00
$ 332.00
$ 266.00
$ 266.00 - $ 266.00
$ 266.00

Foster FSS316-6401-12-12, 3/4" ORB (1 1/16"-12 thread) Male x 3/4" Male Pipe, 316 Stainless

The Foster FSS316-6401-12-12 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 3/4" ORB (1 1/16"-12 thread) Male x 3/4" Male Pipe. Machined f...

View full details
$ 332.00
$ 332.00 - $ 332.00
$ 332.00
$ 266.00
$ 266.00 - $ 266.00
$ 266.00
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 %
$ 576.00
$ 576.00 - $ 576.00
$ 576.00
$ 460.00
$ 460.00 - $ 460.00
$ 460.00

Foster FSS316-6401-16-16, 1" ORB (1 5/16"-12 thread) Male x 1" Male Pipe, 316 Stainless

The Foster FSS316-6401-16-16 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1" ORB (1 5/16"-12 thread) Male x 1" Male Pipe. Machined for l...

View full details
$ 576.00
$ 576.00 - $ 576.00
$ 576.00
$ 460.00
$ 460.00 - $ 460.00
$ 460.00
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 %
$ 553.00
$ 553.00 - $ 553.00
$ 553.00
$ 443.00
$ 443.00 - $ 443.00
$ 443.00

Foster FSS316-6401-16-12, 1" ORB (1 5/16"-12 thread) Male x 3/4" Male Pipe, 316 Stainless

The Foster FSS316-6401-16-12 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1" ORB (1 5/16"-12 thread) Male x 3/4" Male Pipe. Machined for...

View full details
$ 553.00
$ 553.00 - $ 553.00
$ 553.00
$ 443.00
$ 443.00 - $ 443.00
$ 443.00
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 %
$ 133.00
$ 133.00 - $ 133.00
$ 133.00
$ 106.00
$ 106.00 - $ 106.00
$ 106.00

Foster FSS316-6404-04-04, 1/4" ORB (7/16"-20 thread) Female x 1/4" Male Pipe, 316 Stainless

The Foster FSS316-6404-04-04 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1/4" ORB (7/16"-20 thread) Female x 1/4" Male Pipe. Machined f...

View full details
$ 133.00
$ 133.00 - $ 133.00
$ 133.00
$ 106.00
$ 106.00 - $ 106.00
$ 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 %
$ 287.00
$ 287.00 - $ 287.00
$ 287.00
$ 230.00
$ 230.00 - $ 230.00
$ 230.00

Foster FSS316-6401-10-08, 5/8" ORB (7/8"-14 thread) Male x 1/2" Male Pipe, 316 Stainless

The Foster FSS316-6401-10-08 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 5/8" ORB (7/8"-14 thread) Male x 1/2" Male Pipe. Machined for ...

View full details
$ 287.00
$ 287.00 - $ 287.00
$ 287.00
$ 230.00
$ 230.00 - $ 230.00
$ 230.00
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 %
$ 332.00
$ 332.00 - $ 332.00
$ 332.00
$ 266.00
$ 266.00 - $ 266.00
$ 266.00

Foster FSS316-6401-12-08, 3/4" ORB (1 1/16"-12 thread) Male x 1/2" Male Pipe, 316 Stainless

The Foster FSS316-6401-12-08 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 3/4" ORB (1 1/16"-12 thread) Male x 1/2" Male Pipe. Machined f...

View full details
$ 332.00
$ 332.00 - $ 332.00
$ 332.00
$ 266.00
$ 266.00 - $ 266.00
$ 266.00
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 %
$ 221.00
$ 221.00 - $ 221.00
$ 221.00
$ 177.00
$ 177.00 - $ 177.00
$ 177.00

Foster FSS316-6401-08-06, 1/2" ORB (3/4"-16 thread) Male x 3/8" Male Pipe, 316 Stainless

The Foster FSS316-6401-08-06 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1/2" ORB (3/4"-16 thread) Male x 3/8" Male Pipe. Machined for ...

View full details
$ 221.00
$ 221.00 - $ 221.00
$ 221.00
$ 177.00
$ 177.00 - $ 177.00
$ 177.00
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 %
$ 332.00
$ 332.00 - $ 332.00
$ 332.00
$ 266.00
$ 266.00 - $ 266.00
$ 266.00

Foster FSS316-6401-10-12, 5/8" ORB (7/8"-14 thread) Male x 3/4" Male Pipe, 316 Stainless

The Foster FSS316-6401-10-12 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 5/8" ORB (7/8"-14 thread) Male x 3/4" Male Pipe. Machined for ...

View full details
$ 332.00
$ 332.00 - $ 332.00
$ 332.00
$ 266.00
$ 266.00 - $ 266.00
$ 266.00
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 %
$ 221.00
$ 221.00 - $ 221.00
$ 221.00
$ 177.00
$ 177.00 - $ 177.00
$ 177.00

Foster FSS316-6401-08-08, 1/2" ORB (3/4"-16 thread) Male x 1/2" Male Pipe, 316 Stainless

The Foster FSS316-6401-08-08 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1/2" ORB (3/4"-16 thread) Male x 1/2" Male Pipe. Machined for ...

View full details
$ 221.00
$ 221.00 - $ 221.00
$ 221.00
$ 177.00
$ 177.00 - $ 177.00
$ 177.00
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 %
$ 211.00
$ 211.00 - $ 211.00
$ 211.00
$ 168.00
$ 168.00 - $ 168.00
$ 168.00

Foster FSS316-6401-08-04, 1/2" ORB (3/4"-16 thread) Male x 1/4" Male Pipe, 316 Stainless

The Foster FSS316-6401-08-04 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1/2" ORB (3/4"-16 thread) Male x 1/4" Male Pipe. Machined for ...

View full details
$ 211.00
$ 211.00 - $ 211.00
$ 211.00
$ 168.00
$ 168.00 - $ 168.00
$ 168.00
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 %
$ 156.00
$ 156.00 - $ 156.00
$ 156.00
$ 125.00
$ 125.00 - $ 125.00
$ 125.00

Foster FSS316-6401-06-06, 3/8" ORB (9/16"-18 thread) Male x 3/8" Male Pipe, 316 Stainless

The Foster FSS316-6401-06-06 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 3/8" ORB (9/16"-18 thread) Male x 3/8" Male Pipe. Machined for...

View full details
$ 156.00
$ 156.00 - $ 156.00
$ 156.00
$ 125.00
$ 125.00 - $ 125.00
$ 125.00
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 %
$ 221.00
$ 221.00 - $ 221.00
$ 221.00
$ 177.00
$ 177.00 - $ 177.00
$ 177.00

Foster FSS316-6401-06-08, 3/8" ORB (9/16"-18 thread) Male x 1/2" Male Pipe, 316 Stainless

The Foster FSS316-6401-06-08 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 3/8" ORB (9/16"-18 thread) Male x 1/2" Male Pipe. Machined for...

View full details
$ 221.00
$ 221.00 - $ 221.00
$ 221.00
$ 177.00
$ 177.00 - $ 177.00
$ 177.00
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 %
$ 111.00
$ 111.00 - $ 111.00
$ 111.00
$ 88.00
$ 88.00 - $ 88.00
$ 88.00

Foster FSS316-6401-04-02, 1/4" ORB (7/16"-20 thread) Male x 1/8" Male Pipe, 316 Stainless

The Foster FSS316-6401-04-02 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1/4" ORB (7/16"-20 thread) Male x 1/8" Male Pipe. Machined for...

View full details
$ 111.00
$ 111.00 - $ 111.00
$ 111.00
$ 88.00
$ 88.00 - $ 88.00
$ 88.00
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 %
$ 111.00
$ 111.00 - $ 111.00
$ 111.00
$ 88.00
$ 88.00 - $ 88.00
$ 88.00

Foster FSS316-6401-04-04, 1/4" ORB (7/16"-20 thread) Male x 1/4" Male Pipe, 316 Stainless

The Foster FSS316-6401-04-04 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1/4" ORB (7/16"-20 thread) Male x 1/4" Male Pipe. Machined for...

View full details
$ 111.00
$ 111.00 - $ 111.00
$ 111.00
$ 88.00
$ 88.00 - $ 88.00
$ 88.00
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 %
$ 133.00
$ 133.00 - $ 133.00
$ 133.00
$ 106.00
$ 106.00 - $ 106.00
$ 106.00

Foster FSS316-6401-06-04, 3/8" ORB (9/16"-18 thread) Male x 1/4" Male Pipe, 316 Stainless

The Foster FSS316-6401-06-04 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 3/8" ORB (9/16"-18 thread) Male x 1/4" Male Pipe. Machined for...

View full details
$ 133.00
$ 133.00 - $ 133.00
$ 133.00
$ 106.00
$ 106.00 - $ 106.00
$ 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 19% Save %
$ 99.00
$ 99.00 - $ 99.00
$ 99.00
$ 80.00
$ 80.00 - $ 80.00
$ 80.00

Foster FSS316-6401-03-02, 3/16" ORB (3/8"-24 thread) Male x 1/8" Male Pipe, 316 Stainless

The Foster FSS316-6401-03-02 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 3/16" ORB (3/8"-24 thread) Male x 1/8" Male Pipe. Machined for...

View full details
$ 99.00
$ 99.00 - $ 99.00
$ 99.00
$ 80.00
$ 80.00 - $ 80.00
$ 80.00
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 %
$ 111.00
$ 111.00 - $ 111.00
$ 111.00
$ 88.00
$ 88.00 - $ 88.00
$ 88.00

Foster FSS316-6401-02-04, 1/8" ORB (5/16"-24 thread) Male x 1/4" Male Pipe, 316 Stainless

The Foster FSS316-6401-02-04 is a 316 stainless steel SAE O-Ring Boss (ORB) fitting: 1/8" ORB (5/16"-24 thread) Male x 1/4" Male Pipe. Machined for...

View full details
$ 111.00
$ 111.00 - $ 111.00
$ 111.00
$ 88.00
$ 88.00 - $ 88.00
$ 88.00
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 %
$ 420.00
$ 420.00 - $ 420.00
$ 420.00
$ 337.00
$ 337.00 - $ 337.00
$ 337.00

Foster FS318HFP, 3/8" Jiffy-Tite Mold Coolant Coupler x 90° 3/8" Hose Barb, FJT Series, Non-Valved (High Flow), Push-On, Brass

Fast coolant-line connections that slash mold-change downtime. The Foster FS318HFP is a brass 3/8" coupler from the FJT Series — the Jiffy-Tite mol...

View full details
$ 420.00
$ 420.00 - $ 420.00
$ 420.00
$ 337.00
$ 337.00 - $ 337.00
$ 337.00
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 %
$ 418.00
$ 418.00 - $ 418.00
$ 418.00
$ 336.00
$ 336.00 - $ 336.00
$ 336.00

Foster FS318HF, 3/8" Jiffy-Tite Mold Coolant Coupler x 90° 3/8" Hose Barb, FJT Series, Non-Valved (High Flow), Brass

Fast coolant-line connections that slash mold-change downtime. The Foster FS318HF is a brass 3/8" coupler from the FJT Series — the Jiffy-Tite mold...

View full details
$ 418.00
$ 418.00 - $ 418.00
$ 418.00
$ 336.00
$ 336.00 - $ 336.00
$ 336.00
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 %
$ 44.00
$ 44.00 - $ 44.00
$ 44.00
$ 35.00
$ 35.00 - $ 35.00
$ 35.00

Foster FP252S, 1/4" Jiffy-Tite Mold Coolant Nipple x 1/4" Hose Stem, FJT Series, Stainless

Coolant line connections for plastic injection molds and die-casting dies. The Foster FP252S is a stainless 1/4" nipple from the FJT Series — the J...

View full details
$ 44.00
$ 44.00 - $ 44.00
$ 44.00
$ 35.00
$ 35.00 - $ 35.00
$ 35.00
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 %
$ 247.00
$ 247.00 - $ 247.00
$ 247.00
$ 199.00
$ 199.00 - $ 199.00
$ 199.00

Foster FS300HF, 3/8" Jiffy-Tite Mold Coolant Coupler x 3/8" Hose Barb, FJT Series, Non-Valved (High Flow), Brass

Fast coolant-line connections that slash mold-change downtime. The Foster FS300HF is a brass 3/8" coupler from the FJT Series — the Jiffy-Tite mold...

View full details
$ 247.00
$ 247.00 - $ 247.00
$ 247.00
$ 199.00
$ 199.00 - $ 199.00
$ 199.00
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 %
$ 259.00
$ 259.00 - $ 259.00
$ 259.00
$ 208.00
$ 208.00 - $ 208.00
$ 208.00

Foster FP352S, 3/8" Jiffy-Tite Mold Coolant Nipple x 3/8" Hose Stem, FJT Series, Stainless

Coolant line connections for plastic injection molds and die-casting dies. The Foster FP352S is a stainless 3/8" nipple from the FJT Series — the J...

View full details
$ 259.00
$ 259.00 - $ 259.00
$ 259.00
$ 208.00
$ 208.00 - $ 208.00
$ 208.00
Save 20% Save %

Request a Quote

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