52
Parker Hannifin Corporation
Parflex Division
Ravenna, Ohio
Hydraulic &
Pneumatic
Hose & Fit.
PTFE
Hose &
Fittings
Thermoplastic
Tubing
Coiled Air Hose,
Fittings
& Accessories
Truck (Fleet)
Products
Tooling &
Equipment
Hose
Accessories
Technical &
Design
Information
Approvals &
Guides
Alphanumeric
Index
51 Series Metric Field Attachable
2B151 BSP Swivel Female 45° Elbow, Ballnose
2B251 BSP Swivel Female 90° Elbow, Ballnose
A
W H
J
E
B
51 Series Field Attachable
A
W H
J
E
B
51 Series Field Attachable
Steel
Part
Number
BSP
Thread
Size
Tube
I.D.
A
Cutoff
Allow.
B
E
H
Hex
J
Hex
W
Hex
Hose Fitting
inch
inch mm inch mm inch mm mm
mm
2B151-4-3 (+)
PF 1/4-19
3/16
2.28 58 1.50 38 0.55 14
14
17
16
2B151-4-4 (+)
PF 1/4-19
1/4
2.32 59 1.57 40 0.55 14
14
17
17
2B151-6-5 (+)
PF 3/8-19
5/16
2.76 70 1.76 44 0.55 14
14
19
19
2B151-12-12 (+)
PF 3/4-14
3/4
3.94 100 2.36 60 0.79 20
30
32
35
2B151-16-16 (+)
PF 1-11
1
4.80 122 2.99 76 1.02 26
32
41
43
Steel
Part
Number
BSP
Thread
Size
Tube
I.D.
A
Cutoff
Allow.
B
E
H
Hex
J
Hex
W
Hex
Hose Fitting
inch
inch mm inch mm inch mm mm
mm
2B251-4-3 (+)
PF 1/4-19
3/16
2.28 58 1.30 33 0.55 14
14
17
16
2B251-4-4 (+)
PF 1/4-19
1/4
2.32 59 1.30 33 1.02 26
14
17
17
2B251-6-5 (+)
PF 3/8-19
5/16
2.60 66 1.57 40 1.34 34
14
19
19
2B251-6-6
PF 3/8-19
3/8
2.95 75 1.73 44 1.22 31
17
19
22
2B251-8-8 (+)
PF 1/2-14
1/2
3.50 89 2.09 53 1.50 38
22
27
27
2B251-12-12 (+)
PF 3/4-14
3/4
4.09 104 2.52 64 1.85 47
30
32
35
2B251-16-16 (+)
PF 1-11
1
4.72 120 2.91 74 2.44 62
32
41
43
(+) Non Standard. See page ii for information on non-standard products.
* 51 series field attachable couplings are not intended for use on hose that has previously been in service.