Nord-Lock Group 扭矩信息 | Nord-Lock

扭矩指南

使用 Nord-Lock® 垫圈，通过我们的指南可获得M3 - M42范围中任何尺寸的螺栓的扭矩和预紧值指示以及各种润滑类型。请注意，不同涂层和润滑剂的摩擦数值会有所不同。

Nord-Lock垫圈扭矩指南

 

      Oil, GF = 75%
μth = 0.15, μh = 0.19		 Cu/C paste, GF = 75%
μth = 0.13, μh = 0.18		 Dry, GF = 62%
μth = 0.18, μh = 0.2
Bolt Size Product Name Pitch
[mm]		 Torque
[Nm]		 Clamp Load
[kN]		 Torque
[Nm]		 Clamp Load
[kN]		 Torque
[Nm]		 Clamp Load
[kN]
M3 NL3 0.5 1.7 2.4 1.5 2.4 1.5 2
M4 NL4 0.7 3.8 4.2 3.6 4.2 3.5 3.5
M5 NL5 0.8 7.5 6.8 6.9 6.8 6.8 5.6
M6 NL6 1 13 9.7 12.1 9.7 12 8
M8 NL8 1.25 32 18 29 18 29 15
M10 NL10 1.5 62 28 57 28 56 23
M12 NL12 1.75 107 40 99 40 97 33
M14 NL14 2 170 55 157 55 155 46
M16 NL16 2 260 75 240 75 237 62
M18 NL18 2.5 364 92 336 92 331 76
M20 NL20 2.5 510 118 470 118 464 97
M22 NL22 2.5 696 146 642 146 634 120
M24 NL24 3 878 169 809 169 800 140
M27 NL27 3 1 ,284 221 1183 221 1172 182
M30 NL30 3.5 1750 269 1613 269 1596 222
M33 NL33 3.5 2360 333 2173 333 2155 275
M36 NL36 4 3043 392 2803 392 2776 324
M39 NL39 4 3931 468 3619 468 3589 387
M42 NL42 4.5 4860 538 4476 538 4436 445

 

Cu/C paste = Copper/graphite paste
Oil = WD40 has been used.
GF = Ratio of yield point. When tightening according to guidelines and with no deviation, this is the pre-stress achieved expressed as % of yield point.
μth = Thread friction coefficient
μh = Under head friction coefficient
1 N = 0.225 lb
1 Nm = 0.738 ft-lb


Thread friction coefficients have theoretical values but are verified through testing.
Under head friction coefficients have been established by tests.

 

      Oil, GF = 75%
μth = 0.15, μh = 0.17		 Cu/C paste, GF = 75%
μth = 0.13, μh = 0.17		 Dry, GF = 62%
μth = 0.18, μh = 0.18
Product name Bolt Size Pitch
[mm]		 Torque
[Nm]		 Clamp Load
[kN]		 Torque
[Nm]		 Clamp Load
[kN]		 Torque
[Nm]		 Clamp Load
[kN]
NL3  M3  0.5  0.8  1.2  0.7  1.2  0.7  1.0 
NL4  M4  0.7  1.8  2.1  1.7  2.1  1.6  1.7 
NL5  M5  0.8  3.5  3.4  3.4  3.4  3.2  2.8 
NL6  M6  1.0  6.2  4.8  5.9  4.8  5.6  4.0 
NL8  M8  1.25  15 9.0  14 9.0  14 7.0 
NL10  M10  1.5  29 14 28 14 27 12
NL12  M12  1.75  50 20 48 20 46 17
NL14  M14  2.0  80 28 76 28 73 23
NL16  M16  2.0  123 38 116 38 112 31
NL18  M18  2.5  172 46 163 46 157 38
NL20  M20  2.5  240 59 228 59 220 49
NL22  M22  2.5  328 73 311 73 301 60
NL24  M24  3.0  414 85 392 85 379 70
NL27  M27  3.0  605 110 573 110 555 91
NL30  M30  3.5  825 135 782 135 757 111
NL33  M33  3.5  1113 166 1053 166 1022 138
NL36  M36  4.0  1435 196 1358 196 1316 162
NL39  M39  4.0  1853 234 1753 234 1701 194
NL42  M42  4.5  2291 269 2169 269 2103 222

 

Cu/C paste = Copper/graphite paste
Oil = WD40 has been used.
GF = Ratio of yield point. When tightening according to guidelines and with no deviation, this is the pre-stress achieved expressed as % of yield point.
μth = Thread friction coefficient
μh = Under head friction coefficient
1 N = 0.225 lb
1 Nm = 0.738 ft-lb


Thread friction coefficients have theoretical values but are verified through testing.
Under head friction coefficients have been established by tests.

 

      Oil, GF = 71%
μth = 0.15, μh = 0.15		 Cu/C paste, GF = 75%
μth = 0.13, μh = 0.15
Bolt Size Product Name Pitch
[mm]		 Torque
[Nm]		 Clamp Load
[kN]		 Torque
[Nm]		 Clamp Load
[kN]
M3 NL3 0.5 2 3.2 2 3.4
M4 NL4 0.7 4.5 5.6 4.5 5.9
M5 NL5 0.8 8.9 9.1 8.9 9.6
M6 NL6 1 15.5 12.9 15.5 13.6
M8 NL8 1.25 37 23 37 25
M10 NL10 1.5 73 37 73 39
M12 NL12 1.75 126 54 126 57
M14 NL14 2 201 74 201 78
M16 NL16 2 307 100 306 106
M18 NL18 2.5 430 123 429 130
M20 NL20 2.5 602 156 600 165
M22 NL22 2.5 821 194 818 205
M24 NL24 3 1036 225 1034 238
M27 NL27 3 1514 294 1509 310
M30 NL30 3.5 2064 358 2058 378
M33 NL33 3.5 2782 443 2772 468
M36 NL36 4 3589 522 3576 551
M39 NL39 4 4632 624 4613 659
M42 NL42 4.5 5731 716 5709 757

 

Cu/C paste = Copper/graphite paste
Oil = WD40 has been used.
GF = Ratio of yield point. When tightening according to guidelines and with no deviation, this is the pre-stress achieved expressed as % of yield point.
μth = Thread friction coefficient
μh = Under head friction coefficient
1 N = 0.225 lb
1 Nm = 0.738 ft-lb


Thread friction coefficients have theoretical values but are verified through testing.
Under head friction coefficients have been established by tests.

 

      Oil, GF=71%
μth= 0.15, μh= 0.13		 Cu/C paste, GF=75%
μth = 0.13, μh = 0.14
Bolt Size Product Name Pitch
[mm]		 Torque
[Nm]		 Clamp Load
[kN]		 Torque
[Nm]		 Clamp Load
[kN]
M3 NL3 0.5 2.2 3.9 2.3 4.1
M4 NL4 0.7 5.1 6.7 5.3 7.1
M5 NL5 0.8 10 10.9 10.3 11.5
M6 NL6 1 17.4 15.4 18 16.3
M8 NL8 1.25 42 28 43 30
M10 NL10 1.5 82 44 85 47
M12 NL12 1.75 142 65 146 68
M14 NL14 2 226 89 233 94
M16 NL16 2 345 120 355 127
M18 NL18 2.5 483 148 498 156
M20 NL20 2.5 676 188 696 198
M22 NL22 2.5 921 233 948 246
M24 NL24 3 1165 270 1199 286
M27 NL27 3 1700 352 1749 372
M30 NL30 3.5 2316 430 2386 454
M33 NL33 3.5 3124 532 3213 562
M36 NL36 4 4029 626 4145 662
M39 NL39 4 5199 748 5346 790
M42 NL42 4.5 6434 860 6617 908

 

Cu/C paste = Copper/graphite paste 
Oil = WD40 has been used.
GF = Ratio of yield point. When tightening according to guidelines and with no deviation, this is the pre-stress achieved expressed as % of yield point.
μth = Thread friction coefficient
μh = Under head friction coefficient
1 N = 0.225 lb
1 Nm = 0.738 ft-lb


Thread friction coefficients have theoretical values but are verified through testing.
Under head friction coefficients have been established by tests.

 

      A2-50, A4-50 Cu/C paste 
GF = 65%, μth= 0.13, μh= 0.13		 A4-70 Cu/C paste 
GF = 65%, μth= 0.13, μh= 0.13		 A4-80 Cu/C paste 
GF = 65%, μth = 0.13, μh = 0.13
Bolt Size Product Name Pitch
[mm]		 Torque
[Nm]		 Clamp Load
[kN]		 Torque
[Nm]		 Clamp Load
[kN]		 Torque
[Nm]		 Clamp Load
[kN]
M3 NL3 ss 0.5 0.4  0.7  0.8 1.5 1.1 2
M4 NL4 ss 0.7 0.9  1.2  1.8 2.6 2.4 3.4
M5 NL5 ss 0.8 1.7  1.9  3.6 4.1 4.8 5.5
M6 NL6 ss 1 2.9  2.7  6.3 5.9 8.4 7.8
M8 NL8 ss 1.25 7.0  5.0  15 11 20 14
M10 NL10 ss 1.5 14 8 30 17 39 23
M12 NL12 ss 1.75 24 12 51 25 68 33
M14 NL14 ss 2 38 16 81 34 108 45
M16 NL16 ss 2 58 21 124 46 165 61
M18 NL18 ss 2.5 81 26 173 56 231 75
M20 NL20 ss 2.5 113 33 243 72 323 95
M22 NL22 ss 2.5 149 39 330 89 440 118
M24 NL24 ss 3 195 48 418 103 557 137
M27 NL27 ss 3 284 63 609 134 812 179
M30 NL30 ss 3.5 388 77 831 164 1108 219
M36 NL36ss 4 674 111 1444 239 1925 319

 

Cu/C paste = Copper/graphite paste 
GF = Ratio of yield point. When tightening according to guidelines and with no deviation, this is the pre-stress achieved expressed as % of yield point.
μth = Thread friction coefficient
μh = Under head friction coefficient
1 N = 0.225 lb
1 Nm = 0.738 ft-lb


Thread friction coefficients have theoretical values but are verified through testing.
Under head friction coefficients have been established by tests.

 

      A4-70 Cu/C paste 
GF = 65%, μth= 0.13, μh= 0.13		 A4-80 Cu/C paste 
GF = 65%, μth = 0.13, μh = 0.13
Bolt Size Product Name Pitch
[mm]		 Torque
[Nm]		 Clamp Load
[kN]		 Torque
[Nm]		 Clamp Load
[kN]
M3 NL3 ss-254 0.5 0.8 1.5 1.1 2
M4 NL4 ss-254 0.7 1.8 2.6 2.4 3.4
M5 NL5 ss-254 0.8 3.6 4.1 4.8 5.5
M6 NL6 ss-254 1 6.3 5.9 8.4 7.8
M8 NL8 ss-254 1.25 15 11 20 14
M10 NL10 ss-254 1.5 30 17 39 23
M12 NL12 ss-254 1.75 51 25 68 33
M14 NL14 ss-254 2 81 34 108 45
M16 NL16 ss-254 2 124 46 165 61
M18 NL18 ss-254 2.5 173 56 231 75
M20 NL20 ss-254 2.5 243 72 323 95
M22 NL22 ss-254 2.5 330 89 440 118
M24 NL24 ss-254 3 418 103 557 137
M27 NL27 ss-254 3 609 134 812 179
M30 NL30 ss-254 3.5 831 164 1108 219
M36 NL36ss-254 4 1444 239 1925 319

 

Cu/C paste = Copper/graphite paste
GF = Ratio of yield point. When tightening according to guidelines and with no deviation, this is the pre-stress achieved expressed as % of yield point.
μth = Thread friction coefficient
μh = Under head friction coefficient
1 N = 0.225 lb
1 Nm = 0.738 ft-lb


Thread friction coefficients have theoretical values but are verified through testing.
Under head friction coefficients have been established by tests.

 

      Oil, GF = 75%
μth = 0.15, μh = 0.19		 Cu/C paste, GF = 75%
μth = 0.13, μh = 0.18		 Dry, GF = 62%
μth = 0,18, μh = 0,2
Bolt Size Product Name Pitch
[mm]		 Torque
[Nm]		 Clamp Load
[kN]		 Torque
[Nm]		 Clamp Load
[kN]		 Torque
[Nm]		 Clamp Load
[kN]
M6 NLX6 1 13 9.7 12 9.7 12 8
M8 NLX8 1.25 32 18 29 18 29 15
M10 NLX10 1.5 62 28 57 28 56 23
M12 NLX12 1.75 107 40 99 40 97 33
M14 NLX14 2 170 55 157 55 155 46
M16 NLX16 2 260 75 240 75 237 62
M20 NLX20 2.5 510 118 470 118 464 97

 

Cu/C paste = Copper/graphite paste 
Oil = WD40 has been used.
GF = Ratio of yield point. When tightening according to guidelines and with no deviation, this is the pre-stress achieved expressed as % of yield point.
μth = Thread friction coefficient
μh = Under head friction coefficient
1 N = 0.225 lb
1 Nm = 0.738 ft-lb


Thread friction coefficients have theoretical values but are verified through testing.
Under head friction coefficients have been established by tests.

 

      Oil, GF = 71%
μth = 0.15, μh = 0.13		 Cu/C paste, GF = 75%
μth = 0.13, μh = 0.14
Bolt Size Product Name Pitch
[mm]		 Torque
[Nm]		 Clamp Load
[kN]		 Torque
[Nm]		 Clamp Load
[kN]
M6 NLX6 1 15.5 12.9 15.5 13.6
M8 NLX8 1.25 37 23 37 25
M10 NLX10 1.5 73 37 73 39
M12 NLX12 1.75 126 54 126 57
M14 NLX14 2 201 74 201 78
M16 NLX16 2 307 100 306 106
M20 NLX20 2.5 602 156 600 165

 

Cu/C paste = Copper/graphite paste 
Oil = WD40 has been used.
GF = Ratio of yield point. When tightening according to guidelines and with no deviation, this is the pre-stress achieved expressed as % of yield point.
μth = Thread friction coefficient
μh = Under head friction coefficient
1 N = 0.225 lb
1 Nm = 0.738 ft-lb


Thread friction coefficients have theoretical values but are verified through testing.
Under head friction coefficients have been established by tests.

 

      Oil, GF = 75%
μth = 0.08, μh = 0.18		 Cu/C paste, GF = 75%
μth = 0.08, μh = 0.19		 Dry, GF = 62%
μth = 0.19, μh = 0.2
Bolt Size Product Name Pitch
[TPI]		 Torque
[ftlb]		 Clamp Load
[lb]		 Torque
[ftlb]		 Clamp Load
[lb]		 Torque
[ftlb]		 Clamp Load
[lb]
#5 NL3 40 1.1 559 1.1 559 1.1 410
#6 NL3.5 32 1.4 640 1.5 640 1.4 469
#8 NL4 32 2.5 983 2.6 983 2.5 721
#10 NL5 24 3.7 1234 3.9 1234 3.7 905
1/4 NL1/4" 20 8.8 2235 9.1 2235 8.8 1639
5/16 NL8 18 18 3674 18 3674 18 2694
3/8 NL3/8" 16 31 5424 32 5424 31 3978
7/16 NL11 14 49 7439 50 7439 50 5455
1/2 NL1/2" 13 75 9920 77 9920 76 7271
9/16 NL14 12 107 12712 111 12712 109 9322
5/8 NL16 11 148 15786 153 15786 151 11576
3/4 NL3/4" 10 258 23335 267 23335 266 17112
7/8 NL22 9 414 32195 429 32195 427 23609
1 NL1" 8 627 42228 650 42228 645 30967
1 1/8 NL30 7 784 46860 812 46860 806 34364
1 1/4 NL33 7 1091 59427 1130 59427 1127 43580
1 3/8 NL36 6 1433 70864 1485 70864 1478 51967
1 1/2 NL39 6 1880 86147 1949 86147 1949 63174

 

Cu/C paste = Copper/graphite paste 
Oil = WD40 has been used.
GF = Ratio of yield point. When tightening according to guidelines and with no deviation, this is the pre-stress achieved expressed as % of yield point.
μth = Thread friction coefficient
μh = Under head friction coefficient
1 lbf = 4.448 N
1 ft-lb = 1.356 Nm


Thread friction coefficients have theoretical values but are verified through testing.
Under head friction coefficients have been established by tests.

 

      Oil, GF = 71%
μth = 0.08, μh = 0.14		 Cu/C paste, GF = 75%
μth = 0.07, μh = 0.15
Bolt Size Product Name Pitch
[TPI]		 Torque
[ftlb]		 Clamp Load
[lb]		 Torque
[ftlb]		 Clamp Load
[lb]
#5 NL3 40 1.3 748 1.3 790
#6 NL3.5 32 1.6 856 1.7 905
#8 NL4 32 2.9 1315 3.0 1389
#10 NL5 24 4.3 1651 4.6 1744
1/4 NL1/4" 20 10.0 2990 11.0 3159
5/16 NL8 18 20.0 4915 22 5192
3/8 NL3/8" 16 36 7256 38 7665
7/16 NL11 14 56 9951 60 10511
1/2 NL1/2" 13 86 13270 91 14017
9/16 NL14 12 123 16771 131 17963
5/8 NL16 11 170 21117 180 22307
3/4 NL3/4" 10 296 31214 315 32973
7/8 NL22 9 475 43067 505 45493
1 NL1" 8 718 56488 764 59671
1 1/8 NL30 7 1020 71192 1085 75203
1 1/4 NL33 7 1417 90284 1506 95370
1 3/8 NL36 6 1864 107660 1982 113725
1 1/2 NL39 6 2445 130878 2598 138251

 

Cu/C paste = Copper/graphite paste 
Oil = WD40 has been used.
GF = Ratio of yield point. When tightening according to guidelines and with no deviation, this is the pre-stress achieved expressed as % of yield point.
μth = Thread friction coefficient
μh = Under head friction coefficient
1 lbf = 4.448 N
1 ft-lb = 1.356 Nm


Thread friction coefficients have theoretical values but are verified through testing.
Under head friction coefficients have been established by tests.

 

      Oil, GF = 65%
μth = 0.06, μh = 0.1		 Cu/C paste, GF = 70%
μth = 0.07, μh = 0.09
Bolt Size Product Name Pitch
[TPI]		 Torque
[ftlb]		 Clamp Load
[lb]		 Torque
[ftlb]		 Clamp Load
[lb]
#5 NL3 40 1.2 840 1.2 905
#6 NL3.5 32 1.4 962 1.5 1036
#8 NL4 32 2.5 1478 2.7 1591
#10 NL5 24 3.8 1855 4.1 1998
1/4 NL1/4" 20 8.9 3360 9.5 3618
5/16 NL8 18 18.0 5522 19.0 5947
3/8 NL3/8" 16 31 8152 33 8779
7/16 NL11 14 49 11180 52 12040
1/2 NL1/2" 13 74 14909 79 16056
9/16 NL14 12 106 19106 113 20575
5/8 NL16 11 146 23726 156 25551
3/4 NL3/4" 10 254 35071 272 37769
7/8 NL22 9 407 48388 435 52110
1 NL1" 8 614 63468 656 68350
1 1/8 NL30 7 873 79988 932 86141
1 1/4 NL33 7 1208 101439 1290 109242
1 3/8 NL36 6 1594 120691 1702 130266
1 1/2 NL39 6 2083 147048 2225 158360

 

Cu/C paste = Copper/graphite paste
Oil = WD40 has been used.
GF = Ratio of yield point. When tightening according to guidelines and with no deviation, this is the pre-stress achieved expressed as % of yield point.
μth = Thread friction coefficient
μh = Under head friction coefficient
1 lbf = 4.448 N
1 ft-lb = 1.356 Nm


Thread friction coefficients have theoretical values but are verified through testing.
Under head friction coefficients have been established by tests.

 

      316ss
Cu/C paste, GF = 65%		 304ss
Cu/C paste, GF = 70%
Bolt Size Product Name Pitch
[TPI]		 Torque
[ftlb]		 Clamp Load
[lb]		 Torque
[ftlb]		 Clamp Load
[lb]
#5 NL3ss 40 0.6 342 0.7 342
#6 NL3.5ss 32 0.8 392 0.9 392
#8 NL4ss 32 1.4 602 1.5 602
#10 NL5ss 24 2.1 756 2.3 756
1/4 NL1/4”ss 20 5.1 1368 5.3 1368
5/16 NL8ss 18 10.0 2249 11.0 2249
3/8 NL3/8”ss 16 18 3320 19 3320
7/16 NL11ss 14 28 4553 30 4553
1/2 NL1/2”ss 13 43 6072 46 6072
9/16 NL14ss 12 62 7781 66 7781
5/8 NL16ss 11 85 9663 90 9663
3/4 NL3/4”ss 10 103 9884 110 9884
7/8 NL22ss 9 165 13637 176 13637
1 NL1”ss 8 250 17886 266 17886
1 1/8 NL30ss 7 355 22542 377 22542
1 1/4 NL33ss 7 494 28587 526 28587
1 3/8 NL36ss 6 649 34089 691 34089
1 1/2 NL39ss 6 853 41441 909 41441

 

Cu/C paste = Copper/graphite paste 
Oil = WD40 has been used.
GF = Ratio of yield point. When tightening according to guidelines and with no deviation, this is the pre-stress achieved expressed as % of yield point.
μth = Thread friction coefficient
μh = Under head friction coefficient
1 lbf = 4.448 N
1 ft-lb = 1.356 Nm


Thread friction coefficients have theoretical values but are verified through testing.
Under head friction coefficients have been established by tests.

 

      316ss
Cu/C paste, GF = 65%		 304ss
Cu/C paste, GF = 70%
Bolt Size Product Name Pitch
[TPI]		 Torque
[ftlb]		 Clamp Load
[lb]		 Torque
[ftlb]		 Clamp Load
[lb]
#5 NL3ss-254 40 0.6 342 0.7 342
#6 NL3.5ss-254 32 0.8 392 0.9 392
#8 NL4ss-254 32 1.4 602 1.5 602
#10 NL5ss-254 24 2.1 756 2.3 756
1/4 NL1/4”ss-254 20 5.1 1368 5.3 1368
5/16 NL8ss-254 18 10.0 2249 11.0 2249
3/8 NL3/8”ss-254 16 18 3320 19 3320
7/16 NL11ss-254 14 28 4553 30 4553
1/2 NL1/2”ss-254 13 43 6072 46 6072
9/16 NL14ss-254 12 62 7781 66 7781
5/8 NL16ss-254 11 85 9663 90 9663
3/4 NL3/4”ss-254 10 103 9884 110 9884
7/8 NL22ss-254 9 165 13637 176 13637
1 NL1”ss-254 8 250 17886 266 17886
1 1/8 NL30ss-254 7 355 22542 377 22542
1 1/4 NL33ss-254 7 494 28587 526 28587
1 3/8 NL36ss-254 6 649 34089 691 34089
1 1/2 NL39ss-254 6 853 41441 909 41441

 

Cu/C paste = Copper/graphite paste 
Oil = WD40 has been used.
GF = Ratio of yield point. When tightening according to guidelines and with no deviation, this is the pre-stress achieved expressed as % of yield point.
μth = Thread friction coefficient
μh = Under head friction coefficient
1 lbf = 4.448 N
1 ft-lb = 1.356 Nm


Thread friction coefficients have theoretical values but are verified through testing.
Under head friction coefficients have been established by tests.

 

      Oil, GF = 75%
μth = 0.08, μh = 0.18		 Cu/C paste, GF = 75%
μth = 0.08, μh = 0.19		 Dry, GF = 55%
μth = 0.19, μh = 0.2
Bolt Size Product Name Pitch
[TPI]		 Torque
[ftlb]		 Clamp Load
[lb]		 Torque
[ftlb]		 Clamp Load
[lb]		 Torque
[ftlb]		 Clamp Load
[lb]
5/16 NLX8 18 18 3674 18 3674 18 2694
3/8 NLX3/8" 16 31 5424 32 5424 31 3978
1/2 NLX1/2" 13 75 9920 77 9920 76 7271
9/16 NLX14 12 107 12712 111 12712 109 9322
5/8 NLX16 11 148 15786 153 15786 151 11576
3/4 NLX3/4" 10 258 23335 267 23335 266 17112

 

Cu/C paste = Copper/graphite paste 
Oil = WD40 has been used.
GF = Ratio of yield point. When tightening according to guidelines and with no deviation, this is the pre-stress achieved expressed as % of yield point.
μth = Thread friction coefficient
μh = Under head friction coefficient


Thread friction coefficients have theoretical values but are verified through testing.
Under head friction coefficients have been established by tests.

 

      Oil, GF = 71%
μth = 0.08, μh = 0.14		 Cu/C paste, GF = 75%
μth = 0.07, μh = 0.15
Bolt Size Product Name Pitch
[TPI]		 Torque
[ftlb]		 Clamp Load
[lb]		 Torque
[ftlb]		 Clamp Load
[lb]
5/16 NLX8 18 20.0 4915 22 5192
3/8 NLX3/8" 16 36 7256 38 7665
1/2 NLX1/2" 13 86 13270 91 14017
9/16 NLX14 12 123 16771 131 17963
5/8 NLX16 11 170 21117 180 22307
3/4 NLX3/4" 10 296 31214 315 32973

 

Cu/C paste = Copper/graphite paste
Oil = WD40 has been used.
GF = Ratio of yield point. When tightening according to guidelines and with no deviation, this is the pre-stress achieved expressed as % of yield point.
μth = Thread friction coefficient
μh = Under head friction coefficient


Thread friction coefficients have theoretical values but are verified through testing.
Under head friction coefficients have been established by tests.

Torque Guidelines Steel Construction Washers, Table 1

Tightening torques to achieve the preloading force for bolting assemblies that originally corresponded to k-class K1 (usually System HV according to EN 14399-4 or EN 14399-8).

    Torque method
Bolt size Product name Tightening torque
MTM,SC [Nm]		 Preloading force 1) without retightening
Fp,C,red* [kN] (90%)		 Preloading force
Fp,C* [kN]


M12

 NL12SC 165 45 50


M16

 NL16SC 400 90 100


M20

 NL20SC 800 144 160


M22

 NL22SC 1.100 171 190


M24

 NL24SC 1.300 198 220


M27

 NL27SC 1.900 261 290


M30

 NL30SC 2.300 315 350


M36

 NL36SC 4.050 459 510

1) Differentation between Fp,C,red* and Fp,C* is only relevant for bolted categories B and C

 

Torque Guidelines Steel Construction Washers, Table 2

Pre-tightening torque for the combined method to achieve the preloading force for bolting assemblies that originally corresponded to k-class K1 (usually System HV according to EN 14399-4 or EN 14399-8).

    Combined method 1)
Bolt size Product name Tightening torque
MCM,SC [Nm]		 Preloading force
Fp,C [kN]


M12

 NL12SC 120 59


M16

 NL16SC 290 110


M20

 NL20SC 510 172


M22

 NL22SC 720 212


M24

 NL24SC 880 247


M27

 NL27SC 1.300 321


M30

 NL30SC 1.700 393


M36

 NL36SC 2.700 572

1) For additional rotation angles  EN 1090-2 Table 21 applies

 

Torque Guidelines Steel Construction Washers, Table 3

Additional rotation for the second step in the combined method (8.8 and 10.9 bolts).

Total nominal thickness "t" of parts to be connected (including all packs and washers)
d = bolt diameter		 Further rotation to be applied, during the second step of tightening
Degress Part turn


t > 2d

 60 1/6


2d ≤ t < 6d

 90 1/4


6d ≤ t ≤ 10d

 120 1/3


10d < t

 No recomendations

Tightening angles when using the combined method varies depending on the clamp length, (t), in relation to bolt diameter, (d).

Torque Guidelines Steel Construction Washers, Table 4

Additional rotation for the second step in the combined method (8.8 and 10.9 bolts).

Designation Nominal diameter
Torque method

Tightening torque MT,SC,sec [Nm]


NL12SC

 M12 80


NL16SC

 M16 200


NL20SC

 M20 360


NL22SC

 M22 520


NL24SC

 M24 640


NL27SC

 M27 1.000


NL30SC

 M30 1.320


NL36SC

 M36 2.240

常见问题

如何使用 Kellerman&Klein 公式计算？

Nord-Lock使用 Kellerman & Klein 公式计算扭矩和预紧力之间的关系。它使用摩擦系数的平均值。Nord-Lock在 Kellerman & Klein 公式中增加了一个拧紧比率。该比率基于我们在螺栓连接安全方面的长期经验，应被视为安全系数。设定该比率的目的是将过度拉伸螺栓的风险降至最低，同时确保夹紧载荷足以产生楔形制锁效果。

计算公式: T0= F0×(0,159×P+0,583×d2×μT+rm×μH) [Nm]

 

什么是拧紧率, GF?

当按照指导原则进行拧紧且无偏差时，这是达到的预应力，以屈服点的百分比表示。此应用程序中的拧紧率可在 0 至 100% 之间设置。夹紧力过低可能导致零件滑动或分离。夹紧载荷过大可能导致零件变形或螺栓过度拉伸。在决定拧紧率时，需要考虑扭力、摩擦力的变化、拧紧工具的散布以及可接受的最大拉伸应力水平。

 

使用 VDI 2230 如何计算？

VDI 2230 使用相同的 Kellerman&Klein 公式，但使用摩擦系数的最小值，并利用螺栓屈服点的 90% 计算与夹紧载荷相对应的扭矩。计算同时考虑了拉伸和扭转应力。计算未考虑拧紧过程中的偏差。

我应该使用哪种计算标准？

如果您不知道使用哪一种，我们建议您使用 Kellerman&Klein。这些准则已成功使用超过 35 年，与我们的垫圈配合使用效果良好。VDI2230越来越常见，一些欧洲国家已经使用了很长时间。如果您觉得不放心，可以随时联系我们进行更深入的分析。

 

您在选择油时有哪些摩擦值？

如果保存计算，您会看到一个摘要，上面列明了我们在计算中使用了哪些值。如果您认为这些值不能代表您的螺栓连接。请重新计算并选择自定义，填写您自己的值。

 

这一工具的精确度如何？

无论使用哪种拧紧工具，都会存在离散性。根据 NF E 25030-1，普通工具的工具精度：

数字扭矩扳手： ± 10%

带反应臂的电子枪： ± 10%

带自动停气装置的气动工具： ± 20%

校准扭矩扳手： ± 15%

冲击扳手： ±50%

您使用的螺纹螺距是多少？

保存计算后，您将看到所使用的螺纹间距。

选择您所在在国家