A-16
Parker Hannifin Corporation
Quick Coupling Division
Minneapolis, MN
www.parker.com/quickcouplings
A
Pneumatics
1/4, 3/8, 1/2”
Body Size Couplers - Male Pipe Thread
Body
Size
Part No.
Brass
Thread Size
Length
Largest
Diameter
Wrench Flats
Weight (lbs.)
1/4
HF-251-4MP
1/4-18
NPTF
2.34
0.99
0.81
0.25
1/4
HF-251-6MP
3/8-18
NPTF
2.37
0.99
0.81
0.26
3/8
HF-371-4MP
1/4-18
NPTF
2.49
1.07
0.94
0.32
3/8
HF-371-6MP
3/8-18
NPTF
2.52
1.07
0.94
0.3
3/8
HF-371-8MP
1/2-14
NPTF
2.68
1.07
0.94
0.33
1/2
HF-501-8MP
1/2-14
NPTF
3.48
1.19
1.06
0.57
Pneumatic Quick Couplings
General Purpose
1/4, 3/8, 1/2”
Body Size Couplers - Female Pipe Thread
Body
Size
Part No.
Brass
Thread Size
Length
Largest
Diameter
Wrench Flats
Weight (lbs.)
1/4
HF-251-4FP
1/4-18
NPSF
2.19
0.99
0.81
0.26
1/4
HF-251-6FP
3/8-18
NPSF
2.34
0.99
0.81
0.27
3/8
HF-371-4FP
1/4-18
NPSF
2.33
1.07
0.94
0.33
3/8
HF-371-6FP
3/8-18
NPSF
2.33
1.07
0.94
0.31
3/8
HF-371-8FP
1/2-14
NPTF
2.49
1.07
1.00
0.35
1/2
HF-501-8FP
1/2-14
NPTF
3.35
1.19
1.06
0.60
1/4, 3/8”
Body Size Couplers - Standard Hose Barb
Body
Size
Part No.
Brass
Hose I.D.
Length
Largest
Diameter
Wrench Flats
Weight (lbs.)
1/4
HF-251-4HB
1/4
2.81
0.99
0.81
0.26
1/4
HF-251-6HB
3/8
2.81
0.99
0.81
0.27
3/8
HF-371-6HB
3/8
3.02
1.07
0.94
0.31
3/8
HF-371-8HB
1/2
3.02
1.07
0.94
0.34
1/4, 3/8”
Body Size Couplers - Push-Lok Hose Barb*
Body
Size
Part No.
Brass
Hose I.D.
Length
Largest
Diameter
Wrench Flats
Weight (lbs.)
1/4
HF-251-4PL
1/4
2.64
0.99
0.81
0.26
1/4
HF-251-6PL
3/8
2.78
0.99
0.81
0.27
3/8
HF-371-6PL
3/8
3.02
1.07
0.94
0.33
3/8
HF-371-8PL
1/2
3.07
1.07
0.94
0.31
HF Series Couplers
Accepts Industrial Interchange Nipples
Push-to-connect sleeve, single shut off
*
Push-Lok hose barbs are designed for use with Parker Push-Lok hose and do not require clamps.