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BOLT TORQUE
BOLT TORQUE SPECIFICATIONS
GENERAL TORQUE SPECIFICATION TABLE
Use the following torques when special torques are not given. These values apply to fasteners as received from suppliers,
dry, or when lubricated with normal engine oil. They do not apply if special graphited or moly disulphide greases or other
extreme pressure lubricants are used. This applies to both UNF and UNC threads. Remember to always use grade five or
better when replacing bolts.
IMPORTANT: On all PLATED GRADE 8 bolts, reduce torque 15% from listed bolt torque specification.
Size of Screw
Property Class
Course Thread
Fine Thread
Pitch (mm)
Pounds Feet
Newton
-
Meters
Pitch (mm)
Pounds Feet
Newton
-
Meters
M6
5.6
1.0
3.6
-
5.8
4.9
-
7.9
-
-
-
8.8
5.8
-
9.4
7.9
-
12.7
-
-
10.9
7.2
-
10
9.8
-
13.6
-
-
M8
5.6
1.25
7.2
-
14
9.8
-
19
1.0
12
-
17
16.3
-
23
8.8
17
-
22
23
-
29.8
19
-
27
25.7
-
36.6
10.9
20
-
26
27.1
-
35.2
22
-
31
29.8
-
42
M10
5.6
1.5
20
-
25
27.1
-
33.9
1.25
20
-
29
27.1
-
39.3
8.8
34
-
40
46.1
-
54.2
35
-
47
47.4
-
63.7
10.9
38
-
46
51.5
-
62.3
40
-
52
54.2
-
70.5
M12
5.6
1.75
28
-
34
37.9
-
46.1
1.25
31
-
41
42
-
55.6
8.8
51
-
59
69.1
-
79.9
55
-
68
75.9
-
92.1
10.9
57
-
66
77.2
-
89.4
62
-
75
84
-
101.6
M14
5.6
2.0
49
-
56
66.4
-
75.9
1.5
52
-
64
70.5
-
86.7
8.8
81
-
93
109.8
-
126
90
-
106
122
-
143.6
10.9
96
-
109
130.1
-
147.7
107
-
124
145
-
168
M16
5.6
2.0
67
-
77
90.8
-
104.3
1.5
69
-
83
93.6
-
112.5
8.8
116
-
130
157.2
-
176.2
120
-
138
162.6
-
187
10.9
129
-
145
174.8
-
196.5
140
-
158
189.7
-
214.1
M18
5.6
2.0
88
-
100
119.2
-
136
1.5
100
-
117
136
-
158.5
8.8
150
-
168
203.3
-
227.6
177
-
199
239.8
-
269.6
10.9
175
-
194
237.1
-
262.9
202
-
231
273.7
-
313
M20
5.6
2.5
108
-
130
146.3
-
176.2
1.5
132
-
150
178.9
-
203.3
8.8
186
-
205
252
-
277.8
206
-
242
279.1
-
327.9
10.9
213
-
249
288.6
-
337.4
246
-
289
333.3
-
391.6
SAE Grade No.
Bolt head identification
mark as per grade.
NOTE: Manufacturing
Marks Will Vary
TORQUE
TORQUE
TORQUE
Bolt Size
Pounds Feet
Newton
-
Meters
Pounds Feet
Newton
-
Meters
Pounds Feet
Newton
-
Meters
Inches
Millimeters
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
1/4
6.35
5
6
7
8
9
11
12
15
12
15
16
20
5/16
7.94
10
12
14
16
17
20.5
23
28
24
29
33
39
3/8
9.53
20
23
27
31
35
42
48
57
45
54
61
73
7/16
11.11
30
35
41
47
54
64
73
87
70
84
95
114
1/2
12.70
45
52
61
70
80
96
109
130
110
132
149
179
9/16
14.29
65
75
88
102
110
132
149
179
160
192
217
260
5/8
15.88
95
105
129
142
150
180
203
244
220
264
298
358
3/4
19.05
150
185
203
251
270
324
366
439
380
456
515
618
7/8
22.23
160
200
217
271
400
480
542
651
600
720
814
976
1
25.40
250
300
339
406
580
696
787
944
900
1080
1220
1464
1
-
1/8
25.58
-
-
-
-
800
880
1085
1193
1280
1440
1736
1953
1
-
1/4
31.75
-
-
-
-
1120
1240
1519
1681
1820
2000
2468
2712
1
-
3/8
34.93
-
-
-
-
1460
1680
1980
2278
2380
2720
3227
3688
1
-
1/2
38.10
-
-
-
-
1940
2200
2631
2983
3160
3560
4285
4827
*Thick Nuts must be used with Grade 8 bolts
METRIC BOLT TORQUE SPECIFICATIONS
5.6
8.8
10.9
5
8*
2