Parker Hannifin Corporation
Quick Coupling Division
Minneapolis, MN 55427
33
Quick Coupling Products
1/4"
and 3/8" Body Size Couplers
Female Pipe Thread
Male Pipe Thread
Push-Lok Hose Barb
B
A
C
Standard Hose Barb
B
A
C
B
A
C
B
A
C
Body
Thread
Dimensions (in.)
Size
Part No.
Size
Overall
Hex Largest Wt. (LB)
(
in.)
Brass
NPTF
Length Size Diameter P/Piece
A B C
1/4
HF-251-4MP 1/4-18
2.34 0.81 0.99 0.25
1/4
HF-251-6MP 3/8-18
2.37 0.81 0.99 0.26
3/8
HF-371-4MP 1/4-18
2.49 0.94 1.07 0.32
3/8
HF-371-6MP 3/8-18
2.52 0.94 1.07 0.30
3/8
HF-371-8MP 1/2-14
2.68 0.94 1.07 0.33
1/2
HF-501-8MP 1/2-14
3.48 1.06 1.19 0.57
Body
Dimensions (in.)
Size Part No.
Hose Overall
Hex Largest
Wt. (LB)
(
in.)
Brass
I.D.
Length Size Diameter
P/Piece
A B C
1/4
HF-251-4HB
1/4 2.81 0.81 0.99
0.26
1/4
HF-251-6HB
3/8 2.81 0.81 0.99
0.27
3/8
HF-371-6HB
3/8 3.02 0.94 1.07
0.31
3/8
HF-371-8HB
1/2 3.02 0.94 1.07
0.34
Body
Dimensions (in.)
Size Part No.
Hose Overall
Hex Largest
Wt. (LB)
(
in.)
Brass
I.D.
Length Size Diameter P/Piece
A B C
1/4
HF-251-4PL
1/4 2.64 0.81 0.99
0.26
1/4
HF-251-6PL
3/8 2.78 0.81 0.99
0.27
3/8
HF-371-6PL
3/8 3.02 0.94 1.07
0.33
3/8
HF-371-8PL
1/2 3.07 0.94 1.07
0.31
Body
Thread
Dimensions (in.)
Size
Part No.
Size
Overall
Hex Largest Wt. (LB)
(
in.)
Brass
NPSF
Length Size Diameter P/Piece
A B C
1/4
HF-251-4FP 1/4-18
2.19 0.81 0.99 0.26
1/4
HF-251-6FP 3/8-18
2.34 0.81 0.99 0.27
3/8
HF-371-4FP 1/4-18
2.33 0.94 1.07 0.33
3/8
HF-371-6FP 3/8-18
2.33 0.94 1.07 0.31
3/8
HF-371-8FP 1/2-14
2.49 1.00 1.07 0.35
1/2
HF-501-8FP 1/2-14
3.35 1.06 1.19 0.60