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Table 6.4 SAE Grade 8 Bolt and Grade 8 Free
Spinning Nut
Torque (N·m)
Torque (ft·lbf)
(*in·lbf)
Nominal
Size (A)
Min.
Max.
Min.
Max.
1/4-20
16.8
18.6
*150
*165
5/16-18
35
38
26
28
3/8-16
61
68
46
50
7/16-14
98
109
73
81
1/2-13
150
166
111
123
9/16-12
217
239
160
177
5/8-11
299
330
221
345
3/4-10
531
587
393
435
7/8-9
855
945
633
700
1-8
1165
1288
863
954
Figure 6.4: Bolt Grades
A - Nominal Size
B - SAE-8
C - SAE-5
D - SAE-2
Metric Bolt Specifications
Table 6.5 Metric Class 8.8 Bolts and Class 9 Free
Spinning Nut
Torque (N·m)
Torque (ft·lbf)
(*in·lbf)
Nominal
Size (A)
Min.
Max.
Min.
Max.
3-0.5
1.4
1.6
*13
*14
3.5-0.6
2.2
2.5
*20
*22
4-0.7
3.3
3.7
*29
*32
5-0.8
6.7
7.4
*59
*66
6-1.0
11.4
12.6
*101
*112
8-1.25
28
30
20
23
10-1.5
55
60
40
45
12-1.75
95
105
70
78
14-2.0
152
168
113
124
16-2.0
236
261
175
193
20-2.5
460
509
341
377
24-3.0
796
879
589
651
Figure 6.5: Bolt Grades
147913
97
Revision A
Содержание A40-D
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