2-4 F-934-0418
STANDARD SPECIFICATIONS
TABLE OF CONTENTS
Hydraulic Fitting Torque Specifications
Table 2-1: Hydraulic Fitting Torque Specifications
TORQUE IS SPECIFIED IN FOOT POUNDS- 37
o
JIC, ORS, & ORB (REV. 10/97)
This chart provides tightening torques for general purpose applications when special torques are not specified on process or
drawing. Assembly torques apply to plated nuts and capscrews assembled without supplemental lubrication (as received
condition). They do not apply if special graphite moly-disulfide or other extreme pressure lubricants are used. When fasteners are
dry (solvent cleaned) add 33% to as received condition torque. Bolt head identification marks indicate grade and may vary from
manufacturer to manufacturer. Thick nuts must be used on grade 8 capscrews. Use value in [ ] if using prevailing torque nuts.
Parker Brand Fittings
Dash Size 37 Degree JIC O-Ring (ORS) O-Ring Boss (ORB)
-4 11-13 15-17 13-15
-5 14-16 --------------- 21-23
-6 20-22 34-36 25-29
-8 43-47 58-62 40-44
-10 55-65 100-110 58-62
-12 80-90 134-146 75-85
-16 115-125 202-218 109-121
-20 160-180 248-272 213-237
-24 185-215 303-327 238-262
-32 250-290 -------------- 310-340
Gates Brand Fittings
Dash Size 37 Degree JIC O-Ring (ORS) O-Ring Boss (ORB)
-4 10-11 10-12 14-16
-5 13-15 --------------- ---------------
-6 17-19 18-20 24-26
-8 34-38 32-40 37-44
-10 50-56 46-56 50-60
-12 70-78 65-80 75-83
-14 -------------- 65-80 --------------
-16 94-104 92-105 111-125
-20 124-138 125-140 133-152
-24 156-173 150-180 156-184
-32 219-243 -------------- --------------
Aeroquip Brand Fittings
Dash Size 37 Degree JIC O-Ring (ORS) O-Ring Boss (ORB)
-4 11-12 10-12 14-16
-5 15-16 --------------- 16-20
-6 18-20 18-20 24-26
-8 38-42 32-35 50-60
-10 57-62 46-50 75-80
-12 79-87 65-70 125-135
-14 -------------- -------------- 160-180
-16 108-113 92-100 200-220
-20 127-133 125-140 210-280
-24 158-167 150-165 270-360
-32 245-258 -------------- --------------
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