General Purpose Hydraulic Quick Couplers | Parker SM Series Couplers

Body

Size

(in.)

Part

No.

Steel

Thread

Size

Dimensions (in.)

Overall

Length

A

Wrench

Flats

B

Largest

Diameter

C

1/4

SM-251-4FP

1/4-18 NPTF

2.09

0.75

1.06

1/4

SM-251-4FB

G1/4 BSPP

2.24

0.75

1.06

1/4

SM-251-6FP

3/8-18 NPTF

2.24

0.94

1.06

1/4

SM-251-6FB

G3/8 BSPP

2.24

0.94

1.06

1/4

SM-251-6FO

9/16-18ORB

2.24

0.75

1.06

1/2

SM-501-8FP

1/2-14 NPTF

3.00

1.25

1.56

1/2

SM-501-8FB

G1/2 BSPP

3.00

1.25

1.56

1/2

SM-501-12FP

3/4-14 NPTF

3.07

1.37

1.56

1/2

SM-501-12FB

G3/4 BSPP

3.16

1.37

1.56

1/2

SM-501-8FO

3/4-16ORB

3.16

1.25

1.56

3/4

SM-751-12FO

1 1/16-12ORB

3.89

1.62

2.25

3/4

SM-751-12FP

3/4-14 NPTF

3.77

1.62

2.22

3/4

SM-751-12FB

G3/4 BSPP

3.89

1.62

2.22

3/4

SM-751-16FP

1-11 1/2 NPTF

3.98

1.62

2.22

3/4

SM-751-16FB

G 1 BSPP

3.98

1.62

2.22

3/4

SM-751-16FO

1-5/16-12ORB

3.98

1.62

2.22

Optional Seals Suffix (Standard seals are Nitrile)

E4 

Fluorocarbon

E5 

Ethylene Propylene (EPR)

E12 

Neoprene

 E12

Perfluoroelastomer (Contact Factory for Seal Options)

Body Size (in.)

1/4

1/2

3/4

Rated Pressure (PSI)

6,000

6,000

4,500

Rated Flow (GPM)

3

12

28

Temperature Range

(Nitrile Seals)

-40° to +250°F