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Hydraulic Fitting Torque Specifications
TORQUE IS SPECIFIED IN FOOT POUNDS- 37
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.
graphite moly-disulfide or other extreme 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.
Parker Brand Fittings
Dash Size
-4
-5
-6
-8
-10
-12
-16
-20
-24
-32
Gates Brand Fittings
Dash Size
-4
-5
-6
-8
-10
-12
-14
-16
-20
-24
-32
Aeroquip Brand Fittings
Dash Size
-4
-5
-6
-8
-10
-12
-14
-16
-20
-24
-32
TABLE OF CONTENTS
o
JIC, ORS, & ORB (REV. 10/97)
37 Degree JIC
11-13
14-16
20-22
43-47
55-65
80-90
115-125
160-180
185-215
250-290
37 Degree JIC
10-11
13-15
17-19
34-38
50-56
70-78
--------------
94-104
124-138
156-173
219-243
37 Degree JIC
11-12
15-16
18-20
38-42
57-62
79-87
--------------
108-113
127-133
158-167
245-258
STANDARD SPECIFICATIONS
They do not apply if special
O-Ring (ORS)
15-17
---------------
34-36
58-62
100-110
134-146
202-218
248-272
303-327
--------------
O-Ring (ORS)
10-12
---------------
18-20
32-40
46-56
65-80
65-80
92-105
125-140
150-180
--------------
O-Ring (ORS)
10-12
---------------
18-20
32-35
46-50
65-70
--------------
92-100
125-140
150-165
--------------
O-Ring Boss (ORB)
13-15
21-23
25-29
40-44
58-62
75-85
109-121
213-237
238-262
310-340
O-Ring Boss (ORB)
14-16
---------------
24-26
37-44
50-60
75-83
--------------
111-125
133-152
156-184
--------------
O-Ring Boss (ORB)
14-16
16-20
24-26
50-60
75-80
125-135
160-180
200-220
210-280
270-360
--------------
2-3
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