Section 1 - General Information
Torque Specifications
Page 1-4
Service Manual
Table 1-3:
Torque Specifications for Metric Fasteners, U.S. Customary Units
Table 1-4:
Torque Specifications for Metric Fasteners, SI Units
Grade 8.8
Grade 10.9
Grade 12.9
Nominal
Thread
Size
Clamp
Load
Tightening Torque
Clamp
Load
Tightening Torque
Clamp
Load
Tightening Torque
K =,15
K =,20
K =,15
K =,20
K =,15
K =,20
mm
lbs.
in-lbs.
in-lbs.
lbs.
in-lbs.
in-lbs.
lbs.
in-lbs.
in-lbs.
3
-
-
-
-
-
-
823
14.6
19.5
3.5
-
-
-
-
-
-
1,109
22.9
30.5
4
-
-
-
-
-
-
1,436
33.9
45.2
5
1,389
41.0
54.7
1,987
58.7
78.2
2,322
68.6
91.2
6
1,966
69.7
92.9
2,813
100.0
132.8
3,287
116.8
155.8
7
2,826
116.8
155.8
4,044
167.3
223.0
4,727
195.6
260.2
ft-lbs.
ft-lbs.
ft-lbs.
ft-lbs.
ft-lbs.
ft-lbs.
8
3,579
14.1
18.8
5,122
20.1
26.9
5,986
23.6
31.4
10
11,742
27.9
37.2
8,117
39.9
53.3
9,486
46.7
62.3
12
8,244
48.7
64.9
11,797
69.7
92.2
13,787
81.1
108.4
14
11,246
77.4
103.3
16,093
110.6
147.5
18,808
129.1
172.6
16
15,883
125.4
166.7
21,971
173.3
230.9
25,677
202.1
269.2
18
19,424
171.9
229.4
26,869
238.2
317.2
31,401
278.1
371.0
20
2,304
243.4
325.3
34,286
337.8
449.9
40,070
394.6
525.9
22
30,653
331.9
442.5
42,403
458.8
612.2
49,556
536.2
715.4
24
35,711
420.4
562.0
49,400
583.4
778.1
57,733
682.2
909.4
27
46,435
617.3
84.8
64,235
853.4
1138.1
75,069
997.2
1329.8
30
56,753
837.9
1117.4
78,509
1159.4
1545.2
91,751
1354.9
1807.0
33
70,208
1140.3
1520.1
97,121
1576.9
2102.8
113,503
1843.9
2457.5
36
82,651
1464.1
1952.3
114,334
2025.3
2700.9
133,620
2367.6
3156.0
8.8
10.9
12.9
Grade 8.8
Grade 10.9
Grade 12.9
Nominal
Thread
Size
Clamp
Load
Tightening Torque
Clamp
Load
Tightening Torque
Clamp
Load
Tightening Torque
K =,15
K =,20
K =,15
K =,20
K =,15
K =,20
mm
N
N-m
N-m
N
N-m
N-m
N
N-m
N-m
3
-
-
-
-
-
-
3660
1,65
2,2
3,5
-
-
-
-
-
-
4932
2,59
3,45
4
-
-
-
-
-
-
6387
3,83
5,11
5
6177
4,63
6,18
8840
6,63
8,84
10330
7,75
10,3
6
8743
7,87
10,5
12512
11,3
15
14623
13,2
17,6
7
12570
13,2
17,6
17990
18,9
25,2
21025
22,1
29,4
8
15921
19,1
25,5
22784
27,3
36,5
26626
32
42,6
10
52230
37,8
50,5
36105
54,1
72,2
42195
63,3
84,4
12
36670
66
88
52475
94,5
125
61328
110
147
14
50025
105
140
71587
150
200
83663
175
234
16
70650
170
226
97732
235
313
114218
274
365
18
86400
233
311
119520
323
430
139680
377
503
20
10250
330
441
152513
458
610
178238
535
713
22
136350
450
600
188618
622
830
220433
727
970
24
158850
570
762
219743
791
1055
256808
925
1233
27
206550
837
115
285728
1157
1543
333923
1352
1803
30
252450
1136
1515
349223
1572
2095
408128
1837
2450
33
312300
1546
2061
432015
2138
2851
504885
2500
3332
36
367650
1985
2647
508582
2746
3662
594368
3210
4279
8.8
10.9
12.9