|
| Metric bolt tightening torque (N·m) per Class
| |
| Preload forces (N) per Class
| Thread
| 4.6
| 5.6
| 6.8
| 8.8
| 10.9
| 12.9
| |
| 4.6
| 5.6
| 6.8
| 8.8
| 10.9
| 12.9
| M2
| 0.13
| 0.16
| 0.26
| 0.35
| 0.49
| 0.59
| |
| 338
| 422
| 675
| 901
| 1267
| 1520
| M2.5
| 0.27
| 0.34
| 0.54
| 0.72
| 1.01
| 1.21
| |
| 563
| 703
| 1125
| 1500
| 2110
| 2532
| M3
| 0.48
| 0.60
| 0.96
| 1.28
| 1.80
| 2.16
| |
| 845
| 1056
| 1689
| 2253
| 3168
| 3801
| M4
| 1.12
| 1.39
| 2.23
| 2.97
| 4.18
| 5.02
| |
| 1463
| 1829
| 2927
| 3902
| 5487
| 6585
| M5
| 2.26
| 2.83
| 4.52
| 6.03
| 8.48
| 10.18
| |
| 2395
| 2994
| 4790
| 6387
| 8982
| 10778
| M6
| 3.84
| 4.80
| 7.69
| 10.25
| 14.41
| 17.29
| |
| 3379
| 4224
| 6758
| 9011
| 12671
| 15205
| M7
| 5.13
| 6.42
| 10.27
| 13.70
| 19.25
| 23.10
| |
|
|
|
|
|
|
| M8
| 9.35
| 11.69
| 18.70
| 24.93
| 35.06
| 42.07
| |
| 6202
| 7753
| 12404
| 16539
| 23258
| 27909
| M10
| 18
| 23
| 37
| 49
| 70
| 83
| |
| 9876
| 12345
| 19752
| 26336
| 37034
| 44441
| M12
| 32
| 40
| 65
| 86
| 121
| 146
| |
| 14400
| 18000
| 28801
| 38401
| 54001
| 64801
| M14
| 52
| 65
| 104
| 138
| 194
| 233
| |
| 19775
| 24719
| 39551
| 52734
| 74158
| 88989
| M16
| 81
| 101
| 161
| 215
| 302
| 363
| |
| 27221
| 34027
| 54443
| 72591
| 102080
| 122497
| M18
| 112
| 139
| 222
| 296
| 417
| 500
| |
| 33078
| 41347
| 66155
| 88207
| 124041
| 148850
| M20
| 157
| 197
| 315
| 420
| 590
| 709
| |
| 42534
| 53167
| 85067
| 113423
| 159501
| 191401
| M22
| 215
| 269
| 430
| 574
| 807
| 968
| |
| 53175
| 66469
| 106350
| 141800
| 199406
| 239288
| M24
| 272
| 340
| 544
| 726
| 1020
| 1224
| |
| 61248
| 76560
| 122497
| 163329
| 229681
| 275617
| M27
| 400
| 500
| 800
| 1067
| 1500
| 1800
| |
| 80670
| 100837
| 161339
| 215119
| 302512
| 363014
| M30
| 542
| 677
| 1083
| 1445
| 2032
| 2438
| |
| 98027
| 122533
| 196054
| 261405
| 367600
| 441120
| M33
| 739
| 923
| 1477
| 1969
| 2770
| 3323
| |
| 122241
| 152801
| 244482
| 325976
| 458404
| 550084
| M36
| 948
| 1185
| 1896
| 2528
| 3555
| 4266
| |
| 143413
| 179266
| 286826
| 382434
| 537798
| 645358
| M39
| 1229
| 1536
| 2457
| 3276
| 4607
| 5529
| |
| 172420
| 215525
| 344839
| 459786
| 646574
| 775888
| M42
| 1519
| 1899
| 3038
| 4050
| 5696
| 6835
| |
| 197407
| 246758
| 394813
| 526417
| 740275
| 888329
| M45
| 1898
| 2373
| 3796
| 5062
| 7118
| 8541
| |
| 231206
| 289007
| 462412
| 616549
| 867022
| 1040426
| M48
| 2282
| 2853
| 4565
| 6086
| 8559
| 10271
| |
| 280008
| 325010
| 520015
| 693354
| 975029
| 1170035
| M52
| 2954
| 3692
| 5907
| 7876
| 11076
| 13292
| |
| 312056
| 390070
| 624112
| 832149
| 1170209
| 1404251
| M56
| 2672
| 4591
| 7345
| 9793
| 13772
| 16526
| |
| 359643
| 449804
| 719689
| 959581
| 1349411
| 1619293
| M60
| 4582
| 5728
| 9164
| 12219
| 17183
| 20619
| |
| 420651
| 525813
| 841301
| 1121735
| 1577440
| 1892928
| M64
| 5536
| 6920
| 11071
| 14762
| 20759
| 24911
| |
| 475860
| 594825
| 951720
| 1268960
| 1784476
| 2141371
| M68
| 6720
| 8400
| 13440
| 17919
| 25199
| 30239
| |
| 545427
| 681784
| 1090855
| 1454473
| 2045353
| 2454423
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
