49
Parker Hannifin Corporation
Parflex Division
Ravenna, Ohio
Coiled Air Hose,
Fittings
& Accessories
Hydraulic &
Pneumatic
Hose & Fit.
PTFE
Hose &
Fittings
The
rmoplastic
Tu
bing
Truck (Fleet)
Products
Tooling &
Equipment
Hose
Accessories
Technical &
Design
Information
Approvals &
Guides
Alphanumeric
Index
2D051 Stud DIN 20078 Light Series
W
B
A
H
51 Series Field Attachable
Steel
Part
Number
Thread
Size
Tube
O.D.
Hose
I.D.
A
Cutoff
Allow.
B
H
Hex
W
Hex
Hose Fitting
mm inch
inch mm inch mm mm mm
2D051-6-3 (+)
M12 X 1,5
6
3/16
1.69 43 0.94 24
14
16
2D051-8-4 (+)
M14 X 1,5
8
1/4
1.81 46 0.98 25
17
17
2D051-10-5 (+)
M16 X 1,5
10
5/16
2.05 52 1.02 26
17
29
2D051-10-6 (+)
M16 X 1,5
10
3/8
2.32 59 1.18 30
17
22
2D051-12-6 (+)
M18 X 1,5
12
3/8
2.32 59 1.18 30
19
22
2D051-15-8
M22 X 1,5
15
1/2
2.60 66 1.34 34
22
27
2D051-18-12 (+)
M26 X 1,5
18
3/4
2.83 72 1.26 32
27
35
2D051-22-12 (+)
M30 X 2
22
3/4
2.95 75 1.38 35
30
35
2D051-28-16 (+)
M36 X 2
28
1
3.31 84 1.50 38
36
43
(+) Non Standard. See page ii for information on non-standard products.
51 Series Metric Field Attachable
2D251 Stud DIN 20078 Heavy Series
A
W H
B
51 Series Field Attachable
Steel
Part
Number
Thread
Size
Tube
O.D.
Hose
I.D.
A
Cutoff
Allow.
B
H
Hex
W
Hex
Hose Fitting
mm inch
inch mm inch mm mm mm
2D251-8-3 (+)
M16 X 1,5
8
3/16
1.85 47 1.06 27
17
16
2D251-10-4 (+)
M18 X 1,5
10
1/4
2.09 53 1.10 28
19
17
2D251-12-5 (+)
M20 X 1,5
12
5/16
2.17 55 1.06 27
22
29
2D251-12-6
M20 X 1,5
12
3/8
2.48 63 1.34 34
22
22
2D251-14-6
M22 X 1,5
14
3/8
2.52 64 1.38 35
22
22
2D251-16-8
M24 X 1,5
16
1/2
2.83 72 1.57 40
24
27
2D251-20-12 (+)
M30 X 2
20
3/4
3.15 80 1.57 40
30
35
2D251-25-12 (+)
M36 X 2
25
3/4
3.31 84 1.73 44
36
35
2D251-30-16 (+)
M42 X 2
30
1
3.78 96 1.97 50
46
43
* 51 series field attachable couplings are not intended for use on hose that has previously been in service.