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THIS CHART PROVIDES TIGHTENING TORQUES FOR HYDRAULIC FITTING APPLICATIONS WHEN SPECIAL TORQUES ARE NOT SPECIFIED
ON PROCESS OR DRAWING.
ASSEMBLY TORQUES APPLY TO PLATED CARBON STEEL AND STAINLESS STEEL FITTINGS ASSEMBLED WITHOUT SUPPLEMENTAL
LUBRICATION (AS RECEIVED CONDITION)
PRESSURE LUBRICANTS ARE USED.
BRASS FITTINGS AND ADAPTERS - 65% OF THE TORQUE VALUE FOR STEEL. STAINLESS STEEL, ALUMINUM AND MONEL - THREADS ARE
TO BE LUBRICATED.
TORQUE IS SPECIFIED IN FOOT POUNDS
Dash Size
-4
-5
-6
-8
-10
-12
-14
-16
-20
-24
-32
Dash Size
-4
-5
-6
-8
-10
-12
-14
-16
-20
-24
-32
Dash Size
-4
-5
-6
-8
-10
-12
-16
-20
-24
-32
LANDOLL CORPORATION
HYDRAULIC FITTING TORQUE SPECIFICATIONS
o
37
JIC, ORS, & ORB (REV. 10/97)
.
THEY DO NOT APPLY IF SPECIAL GRAPHITE MOLY-DISULFIDE OR OTHER EXTREME
AEROQUIP BRAND FITTINGS
37 Degree JIC
11-12
15-16
18-20
38-42
57-62
79-87
—
108-113
127-133
158-167
245-258
GATES BRAND FITTINGS
37 Degree JIC
10-11
13-15
17-19
34-38
50-56
70-78
—
94-104
124-138
156-173
219-243
PARKER BRAND FITTINGS
37 Degree JIC
11-13
14-16
20-22
43-47
55-65
80-90
115-125
160-180
185-215
250-290
Table 2-2 Hydraulic Fitting Torque Specifications
O-Ring (ORS)
10-12
—
18-20
32-35
46-50
65-70
—
92-100
125-140
150-165
—
O-Ring (ORS)
10-12
—
18-20
32-40
46-56
65-80
65-80
92-105
125-140
150-180
—
O-Ring (ORS)
15-17
—
34-36
58-62
100-110
134-146
202-218
248-272
303-327
—
O-Ring Boss (ORB)
14-16
18-20
24-26
50-60
72-80
125-135
160-180
200-220
210-280
270-360
—
O-Ring Boss (ORB)
14-16
—
24-26
37-44
50-60
75-83
—
111-125
133-152
156-184
—
O-Ring Boss (ORB)
13-15
21-23
25-29
40-44
57.5-62.5
75-85
109-121
213-237
238-262
310-340
2-3
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