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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
Bolt head identification marks as per grade.
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.
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
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Summary of Contents for Bradco Extreme Duty Ground Shark Series
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