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Page Title:
Table F-4. Dry Torque Limits for Metric Prevailing Torque Nuts |
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 TM 9-2320-366-20-1
APPENDIX F
TORQUE LIMITS
Material Grade Markings
Metric Grade 4.8
Metric Grade 8.8
Metric Grade 10.9
Metric Grade 12.9
Diameter
Thread
Pitch
mm
lb-ft
Nm
lb-ft
Nm
lb-ft
Nm
lb-ft
Nm
6
1
5-6
7-8
7-9
10-12
10-12
14-17
11-14
15-19
8
1.25
12-14
16-18
18-22
24-30
24-30
32-40
27-33
36-46
8
1
12-14
16-20
19-23
25-31
25-31
34-42
28-36
38-48
10
1.5
21-25
28-34
33-41
44-56
44-56
60-76
50-64
68-86
10
1.25
21-25
29-35
34-42
46-58
46-58
63-79
53-67
71-91
10
0.75
23-27
31-37
37-47
49-63
50-64
68-86
57-73
77-99
12
1.75
33-41
46-56
55-69
74-94
75-95
102-128
85-109
115-147
12
1.5
35-43
47-57
56-72
77-97
78-98
106-134
89-113
120-152
12
1.25
36-44
48-60
58-74
79-101
81-103
109-139
91-117
125-159
12
1
37-45
50-62
61-77
82-104
84-106
114-144
95-121
129-165
14
2
53-65
72-88
87-109
117-149
118-150
160-204
134-172
182-232
14
1.5
57-69
76-94
92-116
125-159
126-160
171-217
143-183
194-248
16
2
79-97
107-131
130-166
177-225
178-228
243-309
204-262
277-355
16
1.5
82-102
112-138
138-176
187-239
189-241
256-328
215-277
292-376
18
1.5
197-253
267-343
271-347
367-471
309-399
420-542
20
2.5
248-318
337-431
342-438
464-594
391-503
530-682
20
1.5
271-349
369-473
374-480
507-651
428-552
580-750
20
1
283-365
384-494
390-502
529-681
447-577
606-784
22
2.5
335-429
455-583
460-592
624-802
526-680
714-922
22
1.5
363-467
492-634
499-643
676-872
730-950
990-1290
24
3
420-540
569-733
577-743
783-1009
662-856
897-1161
24
2
453-583
614-792
622-804
844-1090
803-1043
1088-1416
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