Appendix
67
MAN1331
(09/29/22)
METRIC SERIES TORQUE CHART
Metric Bolt Head Identification
Metric
Grade 8.8
Metric
Grade 10.9
Diameter &
Thread Pitch
(Millimeters)
Wrench
Size
Coarse Thread
Fine Thread
Diameter &
Thread Pitch
(Millimeters)
Marking on Head
Marking on Head
Metric 8.8
Metric 10.9
Metric 8.8
Metric 10.9
N-m
lbs-ft
N-m
lbs-ft
N-m
lbs-ft
N-m
lbs-ft
6 x 1.0
10 mm
8
6
11
8
8
6
11
8
6 x 1.0
8 x 1.25
13 mm
20
15
27
20
21
16
29
22
8 x 1.0
10 x 1.5
16 mm
39
29
54
40
41
30
57
42
10 x 1.25
12 x 1.75
18 mm
68
50
94
70
75
55
103
76
12 x 1.25
14 x 2.0
21 mm
109
80
151
111
118
87
163
120
14 x 1.5
16 x 2.0
24 mm
169
125
234
173
181
133
250
184
16 x 1.5
18 x 2.5
27 mm
234
172
323
239
263
194
363
268
18 x 1.5
20 x 2.5
30 mm
330
244
457
337
367
270
507
374
20 x 1.5
22 x 2.5
34 mm
451
332
623
460
495
365
684
505
22 x 1.5
24 x 3.0
36 mm
571
421
790
583
623
459
861
635
24 x 2.0
30 x 3.0
46 mm
1175
867
1626
1199
1258
928
1740
1283
30 x 2.0
