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Hydraulic Fitting Torque
1. Check flare and flare seat for defects that might
cause leakage.
2. Align tube with fitting before tightening.
3. Hand-tighten swivel nut until snug.
4. To prevent twisting the tube, use two wrenches.
Place one wrench on the connector body and
tighten the swivel nut with the second. Torque to
values shown.
If a torque wrench is not available, use the FFFT
(Flats From Finger Tight) method..
Hydraulic Fitting Torque
Hex Size
Tube Size
Across
OD
Flats
lbf•ft
Inches
Inches
3/16
7/16
1/4
9/16
11–12
5/16
5/8
14–16
3/8
11/16
20–22
1/2
7/8
44–48
5/8
1
50–58
3/4
1-1/4
79–88
1
1-5/8
117–125
Values shown are for non-lubricated connections.
Flats From Finger
Torque value
N•m
Flats
6
8
2
15–17
2
19–22
2
27–30
1-1/4
59–65
1
68–79
1
107–119
1
158–170
1
Tight
Turns
1/6
1/6
1/6
1/6
1/6
1/6
1/8
1/8
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