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OM90A
BOLT TORQUE SPECIFICATIONS
GENERAL TORQUE SPECIFICATION TABLES
Use the following charts when determining bolt torque specifications when special torques are not given.
Always use grade 5 or better when replacing bolts.
SAE BOLT TORQUE SPECIFICATIONS
NOTE: The following torque values are for use with extreme pressure lubricants, plating or hard washer
applications Increase torque 15% when using hardware that is unplated and either dry or lubricated with
engine oil.
SAE GRADE 5 TORQUE SAE GRADE 8 TORQUE
Bolt Size Pounds Feet Newton-Meters Pounds Feet Newton-Meters
Bolt head identification marks as per grade.
NOTE: Manufacturing Marks Will Vary
Inches Millimeters UNC UNF UNC UNF UNC UNF UNC UNF
1/4 6.35 8 9 11 12 10 13 14 18
5/16 7.94 14 17 19 23 20 25 27 34
3/8 9.53 30 36 41 49 38 46 52 62
7/16 11.11 46 54 62 73 60 71 81 96
1/2 12.70 68 82 92 111 94 112 127 152
9/16 14.29 94 112 127 152 136 163 184 221
5/8 15.88 128 153 174 207 187 224 254 304
3/4 19.05 230 275 312 373 323 395 438 536
7/8 22.23 340 408 461 553 510 612 691 830
1 25.40 493 592 668 803 765 918 1037 1245
1-1/8 25.58 680 748 922 1014 1088 1224 1475 1660
1-1/4 31.75 952 1054 1291 1429 1547 1700 2097 2305
1-3/8 34.93 1241 1428 1683 1936 2023 2312 2743 3135
1-1/2 38.10 1649 1870 2236 2535 2686 3026 3642 4103
METRIC BOLT TORQUE SPECIFICATIONS
NOTE: The following torque values are for use with metric
hardware that is unplated and either dry or lubricated with
engine oil. Reduce torque 15% when using hardware that has
extreme pressure lubricants, plating or hard washer applications.
Bolt head identification marks as per grade.
Size of Bolt Grade No. Pitch (mm) Pounds Feet Newton-Meters Pitch (mm) Pounds Feet Newton-Meters
5.6 3.6-5.8 4.9-7.9 - -
M6 8.8 1.0 5.8-.4 7.9-12.7 - - -
10.9 7.2-10 9.8-13.6 - -
5.6 7.2-14 9.8-19 12-17 16.3-23
M8 8.8 1.25 17-22 23-29.8 1.0 19-27 25.7-36.6
10.9 20-26 27.1-35.2 22-31 29.8-42
5.6 20-25 27.1-33.9 20-29 27.1-39.3
M10 8.8 1.5 34-40 46.1-54.2 1.25 35-47 47.4-63.7
10.9 38-46 51.5-62.3 40-52 54.2-70.5
5.6 28-34 37.9-46.1 31-41 42-55.6
M12 8.8 1.75 51-59 69.1-79.9 1.25 56-68 75.9-92.1
10.9 57-66 77.2-89.4 62-75 84-101.6
5.6 49-56 66.4-75.9 52-64 70.5-86.7
M14 8.8 2.0 81-93 109.8-126 1.5 90-106 122-143.6
10.9 96-109 130.1-147.7 107-124 145-168
5.6 67-77 90.8-104.3 69-83 93.5-112.5
M16 8.8 2.0 116-130 157.2-176.2 1.5 120-138 162.6-187
10.9 129-145 174.8-196.5 140-158 189.7-214.1
5.6 88-100 119.2-136 100-117 136-158.5
M18 8.8 2.0 150-168 203.3-227.6 1.5 177-199 239.8-269.6
10.9 175-194 237.1-262.9 202-231 273.7-313
5.6 108-130 146.3-176.2 132-150 178.9-203.3
M20 8.8 2.5 186-205 252-277.8 1.5 206-242 279.1-327.9
10.9 213-249 288.6-337.4 246-289 333.3-391.6
10360 3-20-08-3
BOLT TORQUE SPECIFICATIONS