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1、内六角外六角螺栓直径DIN267性能等级(螺栓强度等级)螺 栓螺 栓3.65.66.98.810.912.9S(mm)S(mm)M(mm)Fv(N)Ma（Nm）Fv(N)Ma（Nm）Fv(N)Ma（Nm）Fv(N)Ma（Nm）Fv(N)Ma（Nm）Fv(N)Ma（Nm）1.54M22550.13450.157100.38350.351,1700.51,4150.625M2.54850.266550.351,3100.711,5500.832,1801.182,6201.42.255.5M36300.371,0500.621,7000.992,2501.33,1501.93,8002.26M3.
2、58500.571,4000.952,2501.53,00024,2502.95,1003.437M41,1000.851,8501.42,9002.33,90035,7504.46,7005.148、9M51,8001.73,0002.84,8004.56,4005.99,4008.711,00010510M62,5502.94,2004.86,7507.79,0001013,2001515,50018613、14M84,65077,7501212,4001916,5002524,3003628,40043815、17M107,4001412,3002319,7003726,3004938,
3、7007245,200841019、21M1210,8002418,0004028,8006538,4008556,50012566,0001451222、23M1414,8003924,7006439,50010552,50013577,50020090,5002351424、26M1620,4005934,0009854,50015572,500210107,000310125,00036527M1824,8008141,30013566,00021591,000300129,000430152,0005001730M2031,90011553,00019085,000305117,000
4、425166,000610195,00071032M2239,90015566,500260106,000415146,000580208,000820244,0009601936M2445,90020076,500330122,000530168,000730240,0001,050281,0001,22041M2780,500295100,000490161,000780222,0001,100316,0001,550369,0001,8002246M3073,500395122,000660196,0001,050269,0001,450384,0002,100449,0002,4505
5、0M3391,500540153,000900244,0001,450326,0001,900458,0002,700550,0003,2502755M36107,000690179,0001,150287,0001,850382,0002,450537,0003,450645,0004,15060M39129,000900215,0001,500345,0002,400460,0003,200646,0004,500775,0005,4003265M42148,0001,100247,0001,850395,0002,950526,0003,950740,0005,550888,0006,6
6、5070M45173,0001,400289,0002,300462,0003,700616,0004,950867,0006,9501,050,0008,3503675M48195,0001,700325,0002,800520,0004,450693,0005,950974,0008,4001,150,000,10,10080M52234,0002,150390,0003,600624,0005,750832,0007,6501,169,00010,8001,403,00012,9004185M56270,0002,700450,0004,500719,0007,150959,0009,5
7、501,349,00013,4001,618,00016,10090M60315,0003,350525,0005,550841,0008,9001,121,00011,9001,576,00016,7001,892,00020,0004695M64357,0004,000595,0006,700951,00010,7001,268,00014,3001,784,00021,1002,140,00024,100S-内六角或外六方两平行边距离Fv-螺栓预紧力Ma-螺栓扭矩返回上层手握扳手拧紧螺丝，手到螺丝的距离X所用的力就是锁紧力矩。ASME标准接口螺纹G1表示是1英寸的管螺纹，表示螺纹的内孔通
8、径的公称尺寸是1英寸（25.4毫米）两个点是英寸的代号。管螺纹是位于管壁上用于连接的螺纹,有55度非密封管螺纹和55度密封管螺纹。 主要用来进行管道的连接，使其内外螺纹的配合紧密，有直管和锥管两种。常见的管螺纹主要包括以下几种：NPT、PT、G等。 1）NPT是National(American)Pipe Thread的缩写，属于美国标准的60度椎管螺纹，用于北美地区，国标查阅GB/T12716-1991。 2）PT（BSPT）是Pipe Thread 的缩写，是55度密封圆锥管螺纹，属于惠氏螺纹家族，多用于欧洲及英联邦国家，常用于水及煤气管行业，锥度1:16，国标查阅GB/T7306-200
9、0。国内叫法为ZG.。 3）G是55度非密封管螺纹，属惠氏螺纹家族。标记为G代表圆柱螺纹。国标查阅GB/T7307-2001。UNF是United Fine Thread，即英制细牙螺纹。UNC：统一粗牙螺纹螺纹联接的拧紧力矩计算MtKP0d103 N.mK:拧紧力系数 d：螺纹公称直径 P0：预紧力 P00As As也可由下面表查出Asds2/4 ds:螺纹部分危险剖面的计算直径ds（d2d3）/2 d3= d1H/6 H：螺纹牙的公称工作高度0 （0.50.7）s s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)摩擦表面状况K值有润滑无润滑精加工表面
10、0.100.12一般加工表面0.130.150.180.21表面氧化0.200.24镀 锌0.180.22干燥的粗加工表面0.260.3s查表：螺纹性能等级3.64.64.85.65.86.88.89.810.912.9s 或0.2N/mm21802403203004004806407209001080As查表：螺纹公称直径d/mm33.545678101214161820222427303336公称应力截面积As/mm25.036.788.7814.220.128.936.65884.3115157192245303353459561694817通过计算得到螺栓联接拧紧力矩如下表所示：钢结构
11、连接用螺栓性能等级分3.6、4.6、4.8、5.6、6.8、8.8、9.8、10.9、12.9等10余个等级，其中8.8级及以上螺栓材质为低碳合金钢或中碳钢并经热处理（淬火、回火），通称为高强度螺栓，其余通称为普通螺栓。螺栓性能等级标号有两部分数字组成，分别表示螺栓材料的公称抗拉强度值和屈强比值。例如，性能等级4.6级的螺栓，其含义是：1、螺栓材质公称抗拉强度达400MPa级；2、螺栓材质的屈强比值为0.6；3、螺栓材质的公称屈服强度达4000.6=240MPa级性能等级10.9级高强度螺栓，其材料经过热处理后，能达到1、螺栓材质公称抗拉强度达1000MPa级；2、螺栓材质的屈强比值为0.9；
12、3、螺栓材质的公称屈服强度达10000.9=900MPa级螺栓性能等级的含义是国际通用的标准，相同性能等级的螺栓，不管其材料和产地的区别，其性能是相同的，设计上只选用性能等级即可表面被氧化（无润滑）的螺纹联接的拧紧力矩值（单位：N.m）性能等级3.64.64.85.65.86.88.89.810.912.9螺纹直径d/mmminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmaxminmax30.330.460.430.610.580.810.540.760.721.010.871.221.161.621.301.831.632.281.962.743.50.510.720.680.960.911.280.851.201.141.59
