2024年1月1日发(作者：)
锥管螺纹拧紧力矩
（4
篇）
以下是网友分享的关于锥管螺纹拧紧力矩的资料
4
篇， 希望对您有所帮助，就爱阅读感谢您的支持。
常用螺纹一般拧紧力矩（
N.m
） 螺纹直径
/mm
螺栓强度级别
4.6 5.6
6.6
10.9
螺纹直径
/mm
螺栓强度级别
4.6 5.6
6.6
10.9
M6
3.43
4.51
5.10
11.37
M8
8.23
10.98
12.35
27.54
M10
16.37
12.05
24.5
54.9
M12
28.4
38.2
43.1
95.1
M14
45.1
60.8
68.6
147
M16
70.6
94.1
106.8
235
M18
98
130
146
323
M20
137
184
208
461
M22186
251 284
627
M24
235
319
359
794
M30
470
637
715
1588
M36
833
1107 1245
2764
M48
注：螺母预紧力矩的计算公式为：
T=KFd K
＝0.15～0.2F―― 螺栓预紧力；
d―― 螺纹直径。
3.1
螺栓预紧力推荐表
序号 强度等级
4.8
6.8
8.8
10.9
；
12.9
最小 破断强度
392MPa 588MPa 784MPa 941MPa 1176MPa
材质 一般 构造用钢 机械 构造用钢 铬铝合金钢 镍铬铝 合金钢
镍铬合金钢 螺栓 对边
N.m kg.m N.m kg.m N.m kg.m N.m kg.m
N.m kg.m
1 M14
22
69 7
98
10
137
14
165
17
226
23
2
M16
24
98
10
137
14
206
21
247
25
353
36
3
M18
27
137
14
206
21
284
29
341
35
481
49
4
M20
30
177
18
275
28
402
41
569
58
677
69
M22
32
5
226
23
333
34
539
55
765
78
912
93
6
M24
36
314
32
471
48
686
70981
100 1177 120 7 M27 41
441 45
637 65 1030
105 1472
150 1765
180 8 M30 46
588 60 883
90 1226 125 1962
200 2354
240 9 M33 50
735 75 1128
115 1471
150 2060
210 2452
250 10 M36
55 981
100
1471
150
1765
180
2453
250
2942
300
11
M39
60
1177
120
1765
180
2157
220
2943
300
3628
370
12
M42
65
1520
155
2354
240
2746
280
3826
390
4609
470
13
M45
70
1765
180
2746
280
3138
320
4415
450
5394
550
14
M48
75
2256
230
3432
350
3923
400
5592
570
6669
680
15
M52
80
2746
280
4119
420
4707
480
6573
670
8336
850
16
M56
85
3530
360
5198
530
5982
610
8437
860 10297
1050 17 M60
90 4021 410 5982 610 7747 790 10791 1100 13239 1350
18 M64
95 5001 510 7453 760 8826
900
19
M68
100
5688
580
8532
870
10787
1100
20
M72
105
6672
660
9807
1000
12651
1290
21
M76
110
7355
750
10787
1100
14710
1500
22
M80
115 8140
830
12256
1250
18142
1850
23
M85
120
8826
900
13729
1400
22065 2250
24
M90
130
10591
1080
16181
1650
24517
2500
25
M100
145
13729
1400
20104
2500
26
M110
155
16377
1670 25007
2550
27
M120
175
19907
2030
29910
3050
28
M125
180
注：表中数值为最大力矩值，建议锁紧力矩值为：表中数据 ×（
70~80）
%
。
螺纹规则 拧紧力矩（
N.m
）
性能等级
5.6
性能等级
8.8
性能等级
10.9 M6 5-7 6-10 11-14 M8
12-15 19-24 22-29 M8×
1 14-18 21-28 24-31 M10 24-30 35-47
43-53 M10 1×.25 28-32 41-53 48-59 M10 1 3×0-36 42-54
51-58 M12 42-53 60-72 80-101 M12 1.×5 44-56 66-82 88-107
M12×
1.25 47-60 72-85 94-114 M14 72-87 96-126 144-175 M14×
1.5 80-96 106-132 160-204 M16 108-127 156-200 199-234 M16×
1.5 116-144 168-204 214-252 M18 156-180 192-226 240-260
M18×
1.5 162-192 204-240 250-300 M20 216-243 312-372 384-439 M20 1.5×
240-264 324-384 433-480
另外还可以根据
T=kDF
来计算拧紧扭矩，其中，
k
是扭矩 系数，
D
是公称直径，
F
是螺栓预紧力
中华人民共和国汽车行业标准
汽车用螺纹紧固件拧紧力矩规范
本标准适用于碳素钢或合金钢制造的螺纹直径为
6-20
㎜、
6
级精度以上的汽车用一般螺栓、螺钉、螺柱和螺母的紧固。 其螺纹尺寸及公差按
GB 193-1981《普通螺纹 直径与螺距系 列》、
GB
196-1981《普通螺纹 基本尺寸》和
GB 197-1981
《普通螺纹 公差与配合》标准的规范；螺栓、螺钉、螺柱 和螺母机械性能，螺栓、螺钉、螺柱与螺母被拧入基体件强 度级别的组合按
GB3098-1982
《紧固件机械性能》标准的规 本标准不适用于承受交变载荷或加润滑剂装配的螺栓、螺 钉、螺柱和螺母的紧固件，以及紧定螺钉和类似的不规定抗 拉强度的螺纹紧固件。
1、汽车用螺纹紧固件拧紧力矩 国家机械工业局
1999-03-15
批准实施
附录
螺纹紧固件的拧紧力矩
在拧紧螺母时，其拧紧扭矩
M
需要克服被旋合螺纹间的摩 擦力矩和螺母与被联接件 （或垫圈） 支承面之间的摩擦力矩， 并使联接产生预紧力
P
。，它们的关系为
M=KP
。
d
×10-3
式中：
M
——拧紧扭矩，
N m
K
——拧紧扭矩系数；
P
。——预紧力，
N
；
d
——螺纹 直径，㎜。
要想得到规定的预紧力， 应进行的量的实验求出拧紧扭矩系 数的实际数值，通过以上的关系计算，把一定大小的扭矩施 加到螺母上就能得到。
通过实验和数学分析得出， 汽车用普通螺纹紧固件拧紧扭矩 系数的平均值为
0.284。对于表
1-表
4
中未规定的各级机械 性能的螺纹紧固件的拧紧扭矩，可按（
A2）、（
A3）、（A5） 经验公式计算确定。 螺纹紧固件最大拧紧扭矩为
M max =0.170
σs A s d 10×-3
式中
M max
—— 最大拧紧扭矩，
N m
σs
——螺纹紧固件的屈服强度
N/mm2
；
A s
——螺纹部分 有效面积，
mm 2
。
A S =(d 2+d 32
)
42
式中：
d 2—— 螺纹中径，㎜；
d 3=d1
－
H/6
，㎜；
d 1
—— 螺纹小径，㎜；
H=0.866p
，㎜；
p
—— 螺距，㎜。纹紧固件标准拧紧扭矩为
M=0.142
σs As d 1×0-3
螺纹紧固件最小拧紧扭矩为
M min =0.114
σs As d 1×0-3
式M min
—— 最小拧紧扭矩，
N m
。
中：
篇四
螺纹联接的拧紧力矩计算
螺
M t
＝K
×P 0×d
×10
－3
N.m
K:拧紧力系数
d
：螺纹公称直径
P 0：预紧力
P 0＝σ0×A s A s
也可由下面表查出
A s
＝
π×d s 2/4 d s :螺纹部分危险剖面的计算直径
（d 2＋d 3）/2 d3= d1－H/6 H
：螺纹牙的公称工作高度
d s
＝
σ0
＝（0.5～0.7）σs
σs
―――― 螺栓材料的屈服极限
N/mm2
（与强度等级相关，材质决定）
K
值查表：
（K
值计算公式略
）
K
值
摩擦表面状况
有润滑
精加工表面 一般加工表面 表面氧化 镀 锌 干燥的粗加工 表面
无润滑
σs
查表：
螺纹性能等级
σs
或
σ0.2N/mm2
As
查表： 螺纹公称直径
d/mm
33.545
67
[***********
]7303336
公称应力截面积
As/mm25.036.788.7814.220.128.936.65884.[***********][1*
]17
通过计算得到螺栓联接拧紧力矩如下表所示：
3.64.64.85.65.86.88.89.810.912.[***********][1**********]0
80
表面被氧化（无润滑）的螺纹联接的拧紧力矩值 （单位：N.m
） 性能等级
3.6 4.6
4.8 5.6
5.8
6.8
8.8
9.8 10.9
12.9
螺纹直径
d/mmmin 3 4 5 6 7 8
max min 0.430.681.012.043.475.838.43 max 0.61 0.96 1.42 2.86
4.86 8.16
min 0.58 0.91 1.35 2.73 4.63
max 0.811.281.893.826.48
min 0.540.851.262.564.347.2810.5420.8836.4257.96
max 0.761.201.773.586.0810.2014.7629.2350.9881.14
min 0.721.141.693.415.799.7114.0527.8448.56
max 1.011.592.364.778.1013.5919.6838.9867.98
min 0.871.372.024.096.9511.6516.8733.4158.27
max 1.22 1.91 2.83 5.73 9.73
min 1.161.822.705.459.26
max 1.622.553.787.6312.9721.7531.4862.36
min 1.302.053.036.1310.4217.4825.3050.11
max 1.832.874.258.5914.5924.4735.4270.16
min 1.632.563.797.6713.0221.8531.6262.64
max 2.283.595.3110.7418.2330.5944.2787.70
min 1.96 3.08 4.55
max 2.74 4.31 6.37
0.33 0.460.76 1.061.53 2.152.60 3.654.37 6.126.32 8.85
3.5 0.51 0.72
9.20 12.88 15.63 21.88 26.22 36.71 37.95 53.13 75.17
105.247.77 10.8816.31 15.5423.61 22.4946.77 44.54
11.81 11.24 15.74
10 12.5317.5416.7023.39 22.27 31.1812 21.8530.5929.1340.79
38.85 54.3814 34.7848.6946.3764.92 61.82 86.5516
54.2675.9672.35101.2896.46 135.05
81.58
77.69108.7787.40122.36109.25152.95131.10183.5477.28108.1
9
92.74129.83123.65173.11139.10194.75173.88243.43208.66292.
1290.43126.60120.58168.81144.69202.57192.92270.09217.043
03.85271.30379.81325.56455.7818
74.65104.5199.53139.35132.71185.79124.42174.18165.89232.2
4199.07278.69265.42371.59298.60418.04373.25522.55447.906
27.0620
105.84148.18141.12197.57188.16263.42176.40246.96235.2032
9.28282.24395.14376.32526.85423.36592.70529.20740.88635.
04889.0622
143.99201.58191.98268.77255.97358.36239.98335.97319.9744
7.96383.96537.55511.95716.73575.94806.32719.931007.90863.
911209.4824
183.00256.19243.99341.59325.32455.45304.99426.99406.6656
9.32487.99683.18650.65910.91731.981024.77914.981280.9710
97.971537.1627
267.69374.76356.92499.69475.89666.25446.15624.61594.8683
2.81713.84999.37951.781332.501070.761499.061338.441873.8
21606.132248.5930
363.53508.94484.70678.59646.27904.78605.88848.23807.8411
30.98969.411357.171292.541809.561454.112035.761817.64254
4.702181.173053.6433
494.68692.56659.58923.41879.441231.21824.471154.261099.3
01539.011319.161846.821758.872462.421978.732770.232473.4
23462.782968.104155.3436
635.30889.42847.071185.891129.421581.191058.831482.36141
1.781976.491694.132371.782258.843162.382541.203557.6831
76.504447.093811.805336.51
表面被氧化（有润滑）的螺纹联接的拧紧力矩值 （单位：N.m
） 性能等级
3.6
4.6
4.8
5.6
5.8
6.8
8.8
9.8
10.9
12.9
螺纹直径
d/mmmin 3 4 5 6 7 8
max min 0.360.570.841.702.894.867.03 max min max
min 0.450.711.052.133.626.078.78
max 0.631.001.482.985.078.5012.30
min 0.600.951.402.844.828.0911.7123.2040.4664.40
max 0.851.331.973.986.7511.3316.4032.4856.6590.16 min
0.721.141.693.415.799.7114.0527.8448.56 max 1.01 1.59 2.36
4.77 8.10
min 0.971.522.254.547.72
max 1.352.133.156.3610.8118.1326.2351.9790.64
min 1.091.712.535.11 8.6814.5721.0841.76
max 1.522.393.547.1612.1620.3929.5158.46
min 1.362.143.166.3910.8518.2126.3552.20
max 1.902.994.438.9515.2025.4936.8973.08
min 1.632.563.797.6713.0221.8531.6262.64
max 2.28 3.59 5.31 10.74 18.23 30.59 44.27 87.70
0.27 0.380.63 0.891.28 1.792.17 3.043.64 5.105.27 7.38
0.51 0.48 0.680.80 0.76 1.061.18 1.12 1.572.39 2.27 3.184.05
3.86 5.406.80 6.47 9.069.84 9.37 13.12
3.5 0.43 0.60
13.59 12.9519.68 18.7438.98 37.1267.98 64.74
10 10.4414.6213.9219.4918.5625.9817.4024.3612
18.2125.4924.2833.9932.3745.3230.3542.4914
28.9840.5738.6454.1051.5272.1348.3067.62
72.84101.9791.04127.46109.25152.9577.28108.19103.04144.2
6115.92162.29144.90202.86173.88243.4316
45.2263.3060.2984.4080.38112.5475.36105.50100.48140.67120
.58168.81160.77225.08180.86253.21226.08316.51271.30379.81
18
62.2187.0982.94116.12110.59154.83103.68145.15138.24193.54
165.89232.24221.18309.66248.83348.36311.04435.46373.2552
2.5520
88.20123.48117.60164.64156.80219.52147.00205.80196.00274.
40235.20329.28313.60439.04352.80493.92441.00617.40529.20
740.8822
119.99167.98159.98223.98213.31298.64199.98279.97266.6437
3.30319.97447.96426.62597.27479.95671.93599.94839.92719.
931007.9024
152.50213.49203.33284.66271.10379.55254.16355.82338.8847
4.43406.66569.32542.21759.09609.98853.98762.481067.47914
.981280.9727
223.07312.30297.43416.40396.58555.21371.79520.51495.7269
4.01594.86832.81793.151110.41892.301249.211115.371561.52
1338.441873.8230
302.94424.12403.92565.49538.56753.98504.90706.86673.2094
2.48807.841130.981077.121507.971211.761696.461514.702120 .581817.642544.7033
412.24577.13549.65769.51732.861026.01687.06961.88916.081
282.511099.301539.011465.732052.021648.942308.522061.182
885.652473.423462.7836
529.42741.18705.89988.24941.181317.66882.361235.301176.4
81647.071411.781976.491882.372635.322117.662964.732647.0
83705.913176.504447.09
镀锌（无润滑）的螺纹联接的拧紧力矩值（单位：
N.m
） 性能等级
3.6
4.6
4.8
5.6
5.8
6.8
8.8
9.8
10.9
12.9
螺纹直径
d/mmmin 3 4 5 6 7 8
max min 0.400.630.931.873.185.347.73 max 0.56 0.88 1.30 2.62
4.46 7.48 min 0.53 0.84 1.24 2.50 4.25 7.12 max
0.741.171.733.505.949.97 min 0.500.781.162.343.986.689.66
max 0.701.101.623.285.579.3513.53 min
0.661.041.553.125.318.9012.8825.5244.5170.84 max
0.931.462.164.377.4312.4618.0435.7362.3199.18 min
0.801.251.853.756.3710.6815.4630.6253.4185.01 max 1.12 1.75
2.60 5.25 8.91 min 1.061.672.475.008.49
max 1.492.343.467.0011.8919.9428.8657.1699.70 min
1.201.882.785.629.5516.0223.1945.9480.12 max
1.672.633.897.8713.3722.4332.4764.31 min
1.492.353.487.0311.9420.0328.9957.42 max
2.093.294.879.8416.7228.0440.5880.39 min 1.792.824.178.43
max 2.51 3.95 5.84 11.81
0.30 0.420.70 0.971.41 1.972.39 3.344.01 5.615.80 8.12
3.5 0.47 0.66
14.33 20.06 24.03 33.65 34.78 48.70 68.90 96.47
14.95 14.2421.64 20.6142.87 40.8374.78 71.22
10.82 10.31 14.43
10 11.4816.0815.3121.44 20.42 28.5819.1426.8012
20.0328.0426.7137.39 35.61 49.8533.3846.7414
31.8844.6342.5059.51 56.67 79.3453.1374.38
112.17100.15140.21120.18168.25119.01113.34158.68127.51178 .52159.39223.15191.27267.7816 49.7469.6366.3292.84 88.42
123.7982.90116.05110.53154.74132.63185.69176.84247.58198.
95278.53248.69348.16298.43417.8018
68.4395.8091.24127.73121.65170.31114.05159.67152.06212.89
182.48255.47243.30340.62273.72383.20342.14479.00410.5757
4.8020
97.02135.83129.36181.10172.48241.47161.70226.38215.60301 .84258.72362.21344.96482.94388.08543.31485.10679.14582.1
2814.9722
131.99184.78175.98246.38234.64328.50219.98307.97293.3041
0.63351.96492.75469.29657.00527.95739.13659.93923.91791.
921108.6924
167.75234.84223.66313.13298.21417.50279.58391.41372.7752
1.88447.32626.25596.43835.00670.98939.38838.731174.22100
6.471409.0627
245.38343.53327.18458.05436.23610.73408.97572.56545.2976
3.41654.35916.09872.471221.45981.531374.141226.911717.67
1472.292061.2030
333.23466.53444.31622.04592.42829.38555.39777.55740.5210
36.73888.621244.071184.831658.761332.941866.111666.17233
2.641999.402799.1733
453.46634.84604.61846.46806.151128.61755.771058.071007.6
91410.761209.231692.921612.302257.221813.842539.372267.
303174.222720.763809.0636
582.36815.30776.481087.071035.301449.42970.601358.83129
4.131811.781552.952174.142070.602898.852329.433261.20291
1.794076.503494.154891.80
镀锌（有润滑）的螺纹联接的拧紧力矩值（单位：
N.m
） 性能等级
3.6
4.6
4.8
5.6
5.8
6.8
8.8
9.8
10.9
12.9
螺纹直径
d/mmmin 3 4 5 6 7 8
max
min 0.330.510.761.532.604.376.32
max min max
min 0.410.640.951.923.265.467.91
max 0.570.901.332.684.567.6511.07
min 0.540.851.262.564.347.2810.5420.8836.4257.96
max 0.761.201.773.586.0810.2014.7629.2350.9881.14
min 0.651.031.523.075.218.7412.6525.0643.7069.55
max 0.91 1.44 2.12 4.29 7.29
min 0.871.372.024.096.95
max 1.221.912.835.739.7316.3123.6146.7781.58
min 0.981.542.284.607.8113.1118.9737.5865.55
max 1.372.153.196.4410.9418.3526.5652.6291.77
min 1.221.922.845.759.7716.3923.7246.9881.94
max 1.712.693.988.0513.6822.9433.2065.77114.72
min 1.472.313.416.9011.7219.6628.4656.38
max 2.05 3.23 4.78 9.66 16.41 27.53 39.84 78.93
0.24 0.340.57 0.801.15 1.611.95 2.743.28 4.594.74 6.64
0.46 0.43 0.610.72 0.68 0.961.06 1.01 1.422.15 2.04 2.863.65
3.47 4.866.12 5.83 8.168.85 8.43 11.81
3.5 0.38 0.54
12.24 11.6517.71 16.8735.08 33.4161.18 58.27
10 9.40 13.1512.5317.5416.7023.3915.6621.9212
16.3922.9421.8530.5929.1340.7927.3138.2414
26.0836.5134.7848.6946.3764.9243.4760.8616
40.6956.9754.2675.9672.35101.2867.8294.95
98.33137.6697.37
92.74129.83104.33146.06130.41182.57156.49219.0990.43126.6
0108.52151.93144.69202.57162.78227.89203.47284.86244.173
41.8318
55.9978.3874.65104.5199.53139.3593.31130.64124.42174.1814
9.30209.02199.07278.69223.95313.53279.94391.91335.92470.
2920
79.38111.13105.84148.18141.12197.57132.30185.22176.40246.
96211.68296.35282.24395.14317.52444.53396.90555.66476.28
666.7922
107.99151.18143.99201.58191.98268.77179.98251.97239.9833
5.97287.97403.16383.96537.55431.96604.74539.95755.92647.
94907.1124
137.25192.14183.00256.19243.99341.59228.74320.24304.9942
6.99365.99512.39487.99683.18548.99768.58686.23960.72823.
481152.8727
200.77281.07267.69374.76356.92499.69334.61468.46446.1562
4.61535.38749.53713.84999.37803.071124.291003.831405.371
204.601686.4430
272.65381.70363.53508.94484.70678.59454.41636.17605.8884
8.23727.061017.88969.411357.171090.581526.821363.231908.
521635.882290.2333
371.01519.42494.68692.56659.58923.41618.35865.70824.4711
54.26989.371385.111319.161846.821484.052077.671855.06259
7.092226.073116.5036
476.47667.06635.30889.42847.071185.89794.121111.771058.8
31482.361270.601778.841694.132371.781905.902668.262382.
373335.322858.854002.38
干燥的粗加工表面的螺纹联接的拧紧力矩值（单位：
N.m
） 性能等级螺纹直径
d/mmmin 3 4 5 6 7 8
3.6
4.6
4.8
5.6
5.8
6.8 8.8
9.8 10.9
12.9 max
min 0.470.741.102.223.766.319.14
max 0.76 1.20 1.77 3.58 6.08 min 0.63 0.99 1.46 2.95 5.02 max
1.011.592.364.778.10 min
0.590.931.372.774.707.8911.4222.6239.45 max
0.951.492.214.477.6012.7418.4536.5463.73 min
0.781.231.833.696.2710.5215.2330.1652.60 max
1.271.992.955.9610.1316.9924.6048.7284.97 min
0.941.482.194.437.5312.6218.2736.19 max 1.52 2.39 3.54 7.16
12.1620.3929.5158.46 min
1.261.972.925.9110.0316.8324.3648.26 max
2.033.194.729.5416.2127.1939.3577.95 min
1.412.223.296.6511.2918.9427.4154.29 max
2.283.595.3110.7418.2330.5944.2787.70 min 1.772.784.11
8.3114.1123.6734.26 max 2.854.486.6413.4222.7938.2355.34
min 2.12 3.33 4.93 max 3.42 5.38 7.97
0.35 0.570.82 1.331.66 2.682.82 4.564.73 7.656.85 11.07
3.5 0.56 0.90
9.97 16.10 16.93 27.35 28.40 45.88 41.11 66.41
10.20 8.42 13.5914.76 12.18 19.68
10 13.5721.9218.1029.23 24.13 38.9812 23.6738.2431.5650.98
42.08 67.98
67.86109.6281.43
131.5463.12101.9784.17135.9694.69152.95118.36191.19142.03
229.4314 37.6760.8650.2381.14 66.98
108.1962.79101.4383.72135.24100.46162.29133.95216.38150.
70243.43188.37304.29226.04365.1516
58.7894.9578.37126.60104.50168.8197.97158.26130.62211.011
56.75253.21209.00337.61235.12379.81293.90474.77352.68569 .7218
80.87130.64107.83174.18143.77232.24134.78217.73179.71290 .30215.65348.36287.54464.49323.48522.55404.35653.18485.2
2783.8220
114.66185.22152.88246.96203.84329.28191.10308.70254.8041
1.60305.76493.92407.68658.56458.64740.88573.30926.10687.
961111.3222
155.98251.97207.98335.97277.31447.96259.97419.96346.6355
9.94415.96671.93554.61895.91623.941007.90779.921259.8793
5.911511.8524
198.24320.24264.33426.99352.44569.32330.41533.74440.5471
1.65528.65853.98704.871138.64792.981280.97991.221601.211
189.471921.4527
290.00468.46386.66624.61515.55832.81483.33780.76644.4410
41.01773.321249.211031.101665.621159.981873.821449.98234
2.281739.982810.7330
393.82636.17525.10848.23700.131130.98656.371060.29875.16
1413.721050.191696.461400.262261.951575.292544.701969.11
3180.872362.933817.0433
535.91865.70714.541154.26952.721539.01893.181442.831190.
901923.771429.082308.521905.453078.032143.633462.782679 .534328.483215.445194.1736
688.241111.77917.651482.361223.541976.491147.071852.9615
29.422470.611835.312964.732447.083952.972752.964447.0934
41.205558.874129.446670.64
精加工表面（无润滑）的螺纹联接的拧紧力矩值 （单位：N.m
） 性能等级
3.6
4.6
4.8
5.6
5.8
6.8 8.8
9.8
10.9
12.9
螺纹直径
d/mmmin 3 4 5 6 7 8
max min 0.220.340.511.021.742.914.228.35 max min
max min 0.270.430.631.282.173.645.27
max 0.380.600.891.793.045.107.38
min 0.360.570.841.702.894.867.03
max 0.510.801.182.394.056.809.84
min 0.430.681.012.043.475.838.43 max
0.610.961.422.864.868.1611.81
min 0.58 0.91 1.35 2.73 4.63
max 0.811.281.893.826.48
min 0.651.031.523.075.218.7412.6525.0643.7069.55 max
0.911.442.124.297.2912.2417.7135.0861.1897.37 min
0.811.281.903.836.5110.9215.8131.3254.63
max 1.141.792.665.379.1215.2922.1443.8576.48 min
0.981.542.284.607.8113.1118.9737.5865.55
max 1.372.153.196.4410.94 18.35 26.56 52.62 91.77
0.16 0.230.38 0.530.77 1.071.30 1.822.18 3.063.16 4.43
0.30 0.29 0.410.48 0.46 0.640.71 0.67 0.941.43 1.36 1.912.43
2.32 3.244.08 3.88 5.445.90 5.62 7.87
3.5 0.26 0.36
7.77 10.8811.24 15.7422.27 31.1838.85 54.3861.82 86.55
10 6.26 8.7711.6911.1415.5910.4414.6213.9219.4916.7023.39
12
10.9315.3014.5720.3919.4227.1918.2125.4924.2833.9929.1340 .7914
17.3924.3423.1832.4630.9143.2828.9840.5738.6454.1046.3764
.9216
27.1337.9836.1750.6448.2367.5245.2263.3060.2984.4072.3510
1.28
86.94121.72104.33146.0696.46
135.05108.52151.93135.65189.91162.78227.8918
37.3252.2549.7769.6766.3692.9062.2187.0982.94116.1299.531
39.35132.71185.79149.30209.02186.62261.27223.95313.5320
52.9274.0970.5698.7894.08131.7188.20123.48117.60164.64141
.12197.57188.16263.42211.68296.35264.60370.44317.52444.53
22
71.99100.7995.99134.39127.99179.18119.99167.98159.98223.9
8191.98268.77255.97358.36287.97403.16359.96503.95431.966
04.7424
91.50128.10122.00170.80162.66227.73152.50213.49203.33284
.66243.99341.59325.32455.45365.99512.39457.49640.48548.9
9768.5827
133.84187.38178.46249.84237.95333.12223.07312.30297.4341
6.40356.92499.69475.89666.25535.38749.53669.22936.91803.
071124.2930
181.76254.47242.35339.29323.14452.39302.94424.12403.9256
5.49484.70678.59646.27904.78727.061017.88908.821272.3510
90.581526.8233
247.34346.28329.79461.70439.72615.61412.24577.13549.6576
9.51659.58923.41879.441231.21989.371385.111236.711731.39
1484.052077.6736
317.65444.71423.53592.95564.71790.59529.42741.18705.8998
8.24847.071185.891129.421581.191270.601778.841588.252223
.551905.902668.26
精加工表面（有润滑）的螺纹联接的拧紧力矩值 （单位：N.m
） 性能
等级
3.6
螺纹直径
d/mmmin 3 4 5 6 7 8
4.6 4.8 5.6 5.8 6.8 8.8 9.8 10.9 12.9
max min 0.180.280.420.851.452.433.516.96
max min
max min 0.230.360.531.071.813.034.39
max 0.320.500.741.492.534.256.15
min 0.300.470.701.422.414.055.86
max 0.420.660.981.993.385.668.20
min 0.360.570.841.702.894.867.03
max 0.510.801.182.394.056.809.84
min max min 0.540.851.262.564.347.2810.5420.8836.4257.96
max 0.761.201.773.586.0810.2014.7629.2350.9881.14
min 0.681.071.583.205.439.1013.1826.1045.52
max 0.951.492.214.477.6012.7418.4536.5463.73
min 0.811.281.903.836.5110.9215.8131.3254.63
max 1.141.792.665.379.1215.2922.1443.8576.48
0.14 0.190.32 0.440.64 0.891.09 1.521.82 2.552.64 3.69
0.25 0.24 0.340.40 0.38 0.530.59 0.56 0.791.19 1.14 1.592.03
1.93 2.703.40 3.24 4.534.92 4.68 6.56
0.48 0.680.76 1.061.12 1.572.27 3.183.86 5.406.47 9.069.37
13.12
3.5 0.21 0.30
10 5.22 7.319.74 9.28
12.998.7012.1811.6016.2413.9219.4918.5625.98
12
9.10
12.7512.1416.9916.1922.6615.1721.2420.2328.3224.2833.9932
.3745.3214
14.4920.2919.3227.0525.7636.0624.1533.8132.2045.0838.6454
.1051.5272.1316
22.6131.6530.1442.2040.1956.2737.6852.7550.2470.3460.2984
.4080.38112.54
72.45101.4386.94121.72
90.43126.60113.04158.26135.65189.91
18
31.1043.5541.4758.0655.3077.4151.8472.5869.1296.7782.9411
6.12110.59154.83124.42174.18155.52217.73186.62261.2720
44.1061.7458.8082.3278.40109.7673.50102.9098.00137.20117.
60164.64156.80219.52176.40246.96220.50308.70264.60370.44
22
59.9983.9979.99111.99106.66149.3299.99139.99133.32186.651
59.98223.98213.31298.64239.98335.97299.97419.96359.96503 .9524
76.25106.75101.66142.33135.55189.77127.08177.91169.44237.
22203.33284.66271.10379.55304.99426.99381.24533.74457.49
640.4827
111.54156.15148.72208.20198.29277.60185.90260.25247.8634
7.00297.43416.40396.58555.21446.15624.61557.69780.76669.
22936.9130
151.47212.06201.96282.74269.28376.99252.45353.43336.6047
1.24403.92565.49538.56753.98605.88848.23757.351060.29908
.821272.3533
206.12288.57274.82384.75366.43513.00343.53480.94458.0464
1.26549.65769.51732.861026.01824.471154.261030.591442.83
1236.711731.3936
264.71370.59352.94494.12470.59658.83441.18617.65588.2482
3.54705.89988.24941.181317.661058.831482.361323.541852.9
61588.252223.55
一般表面（无润滑） 的螺纹联接的拧紧力矩值 （单位：
N.m
） 性
能等 级螺纹直径
d/mmmin 3 4 5 6 7 8 10
0.24 0.57 1.15 1.95 3.28 4.74 3.5 0.38
3.6
4.6
4.8
5.6
5.8
6.8 8.8
9.8
10.9
12.9
max 0.400.630.931.883.195.357.75
min 0.330.510.761.532.604.376.3212.5321.8534.7854.26
max 0.53 0.84 1.24 2.50 4.25 7.14
min 0.43 0.68 1.01 2.04 3.47 5.83
max 0.711.121.653.345.679.52
min 0.410.640.951.923.265.467.9115.6627.3143.47 max
0.671.051.553.135.328.9212.9125.5844.6171.00 min
0.540.851.262.564.347.2810.5420.8836.4257.96 max
0.891.402.074.177.0911.9017.2234.1059.4894.67 min
0.651.031.523.075.218.7412.6525.0643.70 max
1.061.672.485.018.5114.2720.6640.9271.38 min
0.871.372.024.096.9511.6516.8733.4158.27 max
1.422.233.306.6811.3519.0327.5554.5795.17 min
0.981.542.284.607.8113.1118.9737.58 max
1.602.513.727.5112.7621.4130.9961.39 min
1.221.922.845.759.7716.3923.7246.98 max
2.003.144.659.3915.9626.7638.7476.73 min 1.47 2.31 3.41 max
2.40 3.77 5.58
6.90 11.27 11.72 19.15 19.66 32.12 28.46 46.48 56.38 92.08
10.33 8.43 13.7720.46 16.70 27.2835.69 29.13 47.5956.80
46.37 75.73
9.40 15.35
12 16.39 26.7714 26.08 42.6016 40.69 66.4718 55.99 91.45
65.55107.0781.94133.8398.33 160.60
69.55113.6092.74151.47104.33170.40130.41213.00156.49255.6 0
88.62 72.35
118.1667.82110.7890.43147.71108.52177.25144.69236.33162.7
8265.87203.47332.34244.17398.81
74.65121.9399.53
162.5793.31152.41124.42203.21149.30243.86199.07325.14223.
95365.78279.94457.23335.92548.67
20 79.38
129.65105.84172.87141.12230.50132.30216.09176.40288.1221
1.68345.74282.24460.99317.52518.62396.90648.27476.28777.
92 22
107.99176.38143.99235.18191.98313.57179.98293.97239.9839
1.96287.97470.35383.96627.14431.96705.53539.95881.91647.
941058.2924
137.25224.17183.00298.89243.99398.52228.74373.62304.9949
8.15365.99597.78487.99797.05548.99896.68686.231120.85823.
481345.0127
200.77327.92267.69437.23356.92582.97334.61546.53446.1572
8.71535.38874.45713.841165.93803.071311.681003.831639.59
1204.601967.5130
272.65445.32363.53593.76484.70791.68454.41742.20605.8898
9.60727.061187.52969.411583.371090.581781.291363.232226.
611635.882671.9333
371.01605.99494.68807.98659.581077.31618.351009.98824.47
1346.64989.371615.971319.162154.621484.052423.951855.06
3029.932226.073635.9236
476.47778.24635.301037.66847.071383.54794.121297.071058.
831729.431270.602075.311694.132767.081905.903112.972382.
373891.212858.854669.45
一般表面
（有润滑
）
的螺纹联接的拧紧力矩值（单位：
N.m
） 性
能 等 级 螺 纹 直径
d/mm 3 3.5 4 5 6 7 8 10 12 14 16 18 20 22
24
3.6
4.6
4.8
5.6 5.8
6.8 8.8
9.8
10.9
12.9 min 0.18 0.28 0.41 0.83 1.41 2.37
11.8418.8429.3940.4457.3377.9999.12 max 0.29 0.45 0.66
3.43
1.34 2.28 3.82 5.53 min 0.24 0.37 0.55 1.11 1.88 3.16 4.57 max
0.380.600.891.793.045.107.38 min
0.310.490.731.482.514.216.0912.0621.0433.4952.25 max
0.510.801.182.394.056.809.8419.4933.9954.1084.40 min
0.290.460.681.382.353.945.7111.3119.7331.4048.98 max
0.480.751.112.243.806.379.2218.2731.8750.7279.13 min
0.390.620.911.853.145.267.6115.0826.3041.86 max 0.63 1.00
1.48 2.98 5.07 8.50 min 0.470.741.102.223.766.31
max 0.761.201.773.586.0810.2014.7629.2350.9881.14 min
0.630.991.462.955.028.4212.1824.1342.08 max
1.011.592.364.778.1013.5919.6838.9867.98 min
0.711.111.643.325.649.4713.7027.1447.34 max
1.141.792.665.379.1215.2922.1443.8576.48
min 0.881.392.054.157.0611.8317.1333.9359.18
max 1.43 2.24 3.32 6.71
min 1.06 1.67 2.47 4.98
max 1.71 2.69 3.98 8.05
11.40 8.47 13.68 19.12 14.20 22.94 27.67 20.55 33.20 54.81
40.72 65.77 95.60 71.01 114.7212.30 9.1424.36 18.1042.49
31.5667.62 50.23
6.79 10.96 9.05 14.62
19.12 15.78 25.4930.43 25.12 40.5747.48 39.19 63.3065.32
53.91 87.09
66.98108.1975.35121.7294.19152.15113.02182.5765.31105.507
8.37126.60104.50168.81117.56189.91146.95237.38176.34284.8
671.88116.1267.39108.8689.86145.15107.83174.18143.77232.2
4161.74261.27202.18326.59242.61391.9192.61 76.44
123.48101.92164.6495.55154.35127.40205.80152.88246.96203
.84329.28229.32370.44286.65463.05343.98555.66125.99103.9
9167.98138.65223.98129.99209.98173.32279.97207.98335.972
77.31447.96311.97503.95389.96629.94467.95755.92160.12132.
16213.49176.22284.66165.20266.87220.27355.82264.33426.99
352.44569.32396.49640.48495.61800.60594.73960.7227
145.00234.23193.33312.30257.77416.40241.66390.38322.2252
0.51386.66624.61515.55832.81579.99936.91724.991171.14869.
991405.3730
196.91318.09262.55424.12350.06565.49328.19530.15437.5870
6.86525.10848.23700.131130.98787.641272.35984.561590.441
181.471908.5233
267.95432.85357.27577.13476.36769.51446.59721.41595.4596
1.88714.541154.26952.721539.011071.811731.391339.772164.
241607.722597.0936
344.12555.89458.83741.18611.77988.24573.53926.48764.7112
35.30917.651482.361223.541976.491376.482223.551720.6027
79.432064.723335.32
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