下载文档原格式
钢结构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400×0.6=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；3、螺栓材质的公称屈服强度达1000×0.9=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。
强度等级所谓8.8级和10.9级是指螺栓的抗剪切应力等级为8.8GPa和10.9GPa8.8 公称抗拉强度800N/MM2 公称屈服强度640N/MM2一般的螺栓是用"X.Y"表示强度的，X*100=此螺栓的抗拉强度，X*100*（Y/10）=此螺栓的屈服强度（因为按标识规定：屈服强度/抗拉强度=Y/10）如4.8级则此螺栓的抗拉强度为：400MPa；屈服强度为：400*8/10=320MPa。
另：不锈钢螺栓通常标为A4-70，A2-70的样子，意义另有解释度量：当今世界上长度计量单位主要有两种，一种为公制，计量单位为米（m）、厘米（cm）、毫米（mm）等，在欧州、我国及日本等东南亚地区使用较多，另一种为英制，计量单位主要为英寸（inch），相当于我国旧制的市寸，在美国、英国等欧美国家使用较多。
1、公制计量：（10进制）1m =100 cm=1000 mm2、英制计量：（8进制）1英寸=8英分1英寸=25.4 mm 3/8¢¢×25.4 =9.523、1/4¢¢以下的产品用番号来表示其称呼径，如：4#，5#，6#，7#，8#，10#，12# 螺纹一、螺纹是一种在固体外表面或内表面的截面上，有均匀螺旋线凸起的形状。
![[指南]螺丝的强度等级](https://img.taocdn.com/s1/m/2ebfc8a064ce0508763231126edb6f1aff00718f.png)
螺丝的强度等级螺栓的强度等级钢结构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400×0.6=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；3、螺栓材质的公称屈服强度达1000×0.9=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。
强度等级所谓8.8级和10.9级是指螺栓的抗剪切应力等级为8.8GPa和10.9Gpa8.8 公称抗拉强度800N/MM2 公称屈服强度640N/MM2一般的螺栓是用"X.Y"表示强度的，X*100=此螺栓的抗拉强度，X*100*（Y/10）=此螺栓的屈服强度（因为按标识规定：屈服强度/抗拉强度=Y/10）===============如4.8级则此螺栓的抗拉强度为：400MPa屈服强度为：400*8/10=320MPa=================另：不锈钢螺栓通常标为A4-70，A2-70的样子，意义另有解释度量当今世界上长度计量单位主要有两种，一种为公制，计量单位为米（m）、厘米（cm）、毫米（mm）等，在欧州、我国及日本等东南亚地区使用较多，另一种为英制，计量单位主要为英寸（inch），相当于我国旧制的市寸，在美国、英国等欧美国家使用较多。
常用螺栓的标准及规格表国家标准规定了螺纹规格为M3~M64,A和B级的六角头螺栓.A级用于D<=24和L<=10D或L<=150mm(按较小值)的螺栓;B级用于D>24或L>10D或L>150(按较小值)的螺栓外六角螺栓尺寸规格(如图)钢结构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400×0.6=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；3、螺栓材质的公称屈服强度达1000×0.9=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。
常用螺丝规格表强度等级所谓8.8级和10.9级是指螺栓的抗剪切应力等级为8.8GPa和10.9Gpa8.8 公称抗拉强度800N/MM2 公称屈服强度640N/MM2 一般的螺栓是用"X.Y"表示强度的，X*100=此螺栓的抗拉强度，X*100*（Y/10）=此螺栓的屈服强度（因为按标识规定：屈服强度/抗拉强度=Y/10）===============如4.8级则此螺栓的抗拉强度为：400MPa屈服强度为：400*8/10=320MPa=================另：不锈钢螺栓通常标为A4-70，A2-70的样子，意义另有解释度量当今世界上长度计量单位主要有两种，一种为公制，计量单位为米（m）、厘米（cm）、毫米（mm）等，在欧州、我国及日本等东南亚地区使用较多，另一种为英制，计量单位主要为英寸（inch），相当于我国旧制的市寸，在美国、英国等欧美国家使用较多。
常用螺栓的标准及规格表国家标准规定了螺纹规格为M3~M64,A和B级的六角头螺栓.A级用于D<=24和L<=10D或L<=150mm(按较小值)的螺栓;B级用于D>24或L>10D或L>150(按较小值)的螺栓外六角螺栓尺寸规格(如图)钢构造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局部数字组成，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400×0.6=240MPa级性能等级10.9级高强度螺栓，其材料经过热处理后，能到达：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；3、螺栓材质的公称屈服强度达1000×0.9=900MPa级螺栓性能等级的含义是国际通用的标准，一样性能等级的螺栓，不管其材料和产地的区别，其性能是一样的，设计上只选用性能等级即可。
常用螺丝规格表8.8 公称抗拉强度800N/MM2 公称屈服强度640N/MM2 一般的螺栓是用"X.Y"表示强度的，X*100=此螺栓的抗拉强度，X*100*〔Y/10〕=此螺栓的屈服强度〔因为按标识规定：屈服强度/抗拉强度=Y/10〕===============如4.8级那么此螺栓的抗拉强度为：400MPa屈服强度为：400*8/10=320MPa=================另：不锈钢螺栓通常标为A4-70，A2-70的样子，意义另有解释度量当今世界上长度计量单位主要有两种，一种为公制，计量单位为米〔m〕、厘米〔cm〕、毫米〔mm〕等，在欧州、我国及日本等东南亚地区使用较多，另一种为英制，计量单位主要为英寸〔inch〕，相当于我国旧制的市寸，在美国、英国等欧美国家使用较多。
常用螺栓的标准及规格表常用螺栓的标准及规格表国家标准规定了螺纹规格为M3~M64,A和B级的六角头螺栓.A级用于D<=24和L<=10D或L<=150mm(按较小值)的螺栓;B级用于D>24或L>10D或L>150(按较小值)的螺栓外六角螺栓尺寸规格(如图)钢结构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400×0.6=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；3、螺栓材质的公称屈服强度达1000×0.9=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。
常用螺丝规格表类别规格牙距成品外径线径类别规格牙数(每英寸)成品外径线径最大最小±0.02mm 最大最小±0.02mm国标粗牙60° M1.4 0.30 1.38 1.34 1.16英制粗牙55°1/8 40 3.145 3.03 2.70 M1.7 0.35 1.68 1.61 1.42 5/32 32 3.945 3.795 3.38 M2.0 0.40 1.98 1.89 1.68 3/16 24 4.732 4.592 4.00 M2.3 0.40 2.28 2.19 1.98 1/4 20 6.32 6.165 5.45 M2.5 0.45 2.48 2.38 2.15 5/16 18 7.905 7.737 6.94 M3.0 0.50 2.98 2.88 2.60 3/8 16 9.49 9.312 8.40 M3.5 0.60 3.47 3.36 3.02 7/16 14 11.07 10.88 9.84 M4.0 0.70 3.98 3.83 3.40 1/2 12 12.66 12.46 11.22 M4.5 0.75 4.47 4.36 3.88 9/16 12 14.25 14.04 12.81 M5.0 0.80 4.98 4.83 4.30 5/8 11 15.83 15.61 14.27 M6.0 1.00 5.97 5.82 5.18美制粗牙60°4# 40 2.824 2.695 2.37 M7.0 1.00 6.97 6.82 6.18 5# 40 3.154 3.026 2.69 M8.0 1.25 7.96 7.79 7.02 6# 32 3.484 3.333 2.91 M9.0 1.25 8.96 8.79 8.01 8# 32 4.142 3.991 3.57 M10 1.50 9.96 9.77 8.84 10# 24 4.8 4.618 4.05 M11 1.50 10.97 10.73 9.84 12# 24 5.461 5.279 4.70 M12 1.75 11.95 11.76 10.7 1/4 20 6.322 6.117 5.45 M14 2.00 13.95 13.74 12.5 5/16 18 7.907 7.687 6.93 M16 2.00 15.95 15.74 14.5 3/8 16 9.491 9.254 8.40 M18 2.50 17.95 17.71 16.2 7/16 14 11.08 10.82 9.83 M20 2.50 19.95 19.71 18.2 1/2 13 12.66 12.39 11.32国标细牙M4.0 0.50 3.97 3.86 3.58 9/16 12 14.25 13.96 12.80 M4.5 0.50 4.47 4.36 4.07 5/8 11 15.83 15.53 14.26 M5.0 0.50 4.97 4.86 4.57 美制4# 48 2.877 2.713 2.44 M6.0 0.75 5.97 5.85 5.41 5# 44 3.157 3.036 2.7360° M7.0 0.75 6.97 6.85 6.41 粗牙60°6# 40 3.484 3.356 3.02 M8.0 1.00 7.97 7.83 7.24 8# 36 4.145 4.006 3.63 M9.0 1.00 8.97 8.83 8.24 10# 32 4.803 4.651 4.23 M10 1.00 9.97 9.82 9.23 12# 28 5.461 5.296 4.81 M10 1.25 9.96 9.81 9.07 1/4 28 6.324 6.16 5.68 M12 1.25 11.97 11.76 11.07 5/16 24 7.909 7.727 7.16 M12 1.50 11.96 11.79 10.89 3/8 24 9.497 9.315 8.74 M14 1.50 13.96 13.79 12.89 7/16 20 11.08 10.87 10.18 M16 1.50 15.96 15.79 14.89 1/2 20 12.67 12.46 11.76 M18 1.50 17.95 17.73 16.86 9/16 18 14.25 14.03 13.25 M20 1.50 19.95 19.65 18.85 5/8 18 15.83 15.62 14.83类别规格牙数或牙数成品外径线径类别规格牙数或牙数成品外径线径最大最小±0.02mm 最大最小±0.02mm国标7660° M3.0 1.2 3.0 2.85 2.38美制铁板A牙60°2# 32 2.23 2.13 1.78 M3.5 1.4 3.5 3.35 2.75 3# 28 2.56 2.46 2.08 M4.0 1.6 4.0 3.85 3.15 4# 24 2.89 2.79 2.28 M4.5 1.8 4.5 4.35 3.47 5# 20 3.30 3.20 2.60 M5.0 2 5.0 4.85 3.90 6# 18 3.58 3.45 2.78 M6.0 2.5 6.0 5.85 4.67 7# 16 4.01 3.86 3.10日制A 牙铁铁钉60° M2.0 32 2.10 2.00 1.70 8# 15 4.26 4.11 3.30 M2.3 32 2.40 2.30 1.95 9# 14 4.55 4.40 3.45 M2.6 28 2.70 2.60 2.10 10# 12 4.92 4.77 3.75 M3.0 24 3.10 3.00 2.42 12# 11 5.60 5.46 4.30 M3.5 18 3.65 3.50 2.83 14# 10 6.45 6.29 5.05 M4.0 16 4.15 4.00 3.25美制铁板AB牙60°2# 32 2.23 2.08 1.78 M4.5 14 4.65 4.50 3.60 3# 28 2.56 2.46 2.05 M5.0 12 5.20 5.00 4.00 4# 24 2.89 2.74 2.28 M6.0 10 6.20 6.00 4.85 5# 20 3.30 3.20 2.57 M8.0 9 8.20 8.00 6.48 6# 20 3.53 3.43 2.80日制AB 牙铁铁钉M2.0 40 2.00 1.90 1.65 7# 19 3.91 3.78 3.13 M2.3 32 2.30 2.20 1.85 8# 18 4.21 4.04 3.38 M2.6 28 2.60 2.50 2.10 10# 16 4.80 4.65 3.80 M3.0 24 3.00 2.90 2.40 12# 14 5.40 5.31 4.38 M3.5 20 3.50 3.40 2.83 1/4 14 6.25 6.05 5.18 M4.0 18 4.00 3.85 3.25 墙板钉细6# 17 3.60 3.40 2.70 M4.5 16 4.50 4.35 3.60 7# 16 4.00 3.75 3.0360° M5.0 16 5.00 4.85 4.03 牙60°8# 15 4.30 4.05 3.20 M6.0 14 6.00 5.85 4.95 10# 12 4.95 4.70 3.72 M8.0 12 8.00 7.85 6.70 墙板钉粗牙60°6# 9 3.90 3.65 2.65日制木螺丝60° M2.7 1.2 2.77 2.63 2.10 7# 9 4.20 3.90 2.90 M3.1 1.3 3.17 3.03 2.40 8# 9 4.60 4.30 3.20 M3.5 1.4 3.60 3.40 2.75 10# 8 5.30 4.90 3.70 M3.8 1.6 3.90 3.70 3.00德标(C/B)钉40°M2.5 1.1 2.5 2.25 1.80 M4.1 1.8 4.20 4.00 3.20 M3.0 1.35 3.0 2.75 2.10 M4.5 2 4.60 4.40 3.50 M3.5 1.6 3.5 3.20 2.45 M4.8 2.1 4.92 4.68 3.70 M4.0 1.8 4.0 3.70 2.78 M5.1 2.2 5.22 4.98 3.95 M4.5 2 4.5 4.20 3.10 M5.5 2.4 5.62 5.38 4.30 M5.0 2.2 5.0 4.70 3.45 M5.8 2.6 5.92 5.68 4.45 M6.0 2.6 6.0 5.70 4.20强度等级所谓8.8级和10.9级是指螺栓的抗剪切应力等级为8.8GPa和10.9Gpa8.8 公称抗拉强度800N/MM2 公称屈服强度640N/MM2一般的螺栓是用"X.Y"表示强度的，X*100=此螺栓的抗拉强度，X*100*（Y/10）=此螺栓的屈服强度（因为按标识规定：屈服强度/抗拉强度=Y/10）===============如4.8级则此螺栓的抗拉强度为：400MPa屈服强度为：400*8/10=320MPa=================另：不锈钢螺栓通常标为A4-70，A2-70的样子，意义另有解释度量当今世界上长度计量单位主要有两种，一种为公制，计量单位为米（m）、厘米（cm）、毫米（mm）等，在欧州、我国及日本等东南亚地区使用较多，另一种为英制，计量单位主要为英寸（inch），相当于我国旧制的市寸，在美国、英国等欧美国家使用较多。
钢结构连接用螺栓性能等级钢结构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400×0.6=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；3、螺栓材质的公称屈服强度达1000×0.9=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。
强度等级所谓8.8级和10.9级是指螺栓的抗剪切应力等级为8.8GPa和10.9Gpa8.8公称抗拉强度800N/MM2 公称屈服强度640N/MM2一般的螺栓是用"X.Y"表示强度的，X*100=此螺栓的抗拉强度，X*100*（Y/10）=此螺栓的屈服强度（因为按标识规定：屈服强度/抗拉强度=Y/10）===============如4.8级则此螺栓的抗拉强度为：400MPa屈服强度为：400*8/10=320MPa=================另：不锈钢螺栓通常标为A4-70，A2-70的样子，意义另有解释度量当今世界上长度计量单位主要有两种，一种为公制，计量单位为米（m）、厘米（cm）、毫米（mm）等，在欧州、我国及日本等东南亚地区使用较多，另一种为英制，计量单位主要为英寸（inch），相当于我国旧制的市寸，在美国、英国等欧美国家使用较多。
1、公制计量：（10进制）1m =100 cm=1000 mm2、英制计量：（8进制）1英寸=8英分 1英寸=25.4 mm 3/8￠￠×25.4 =9.523、1/4￠￠以下的产品用番号来表示其称呼径，如：4#， 5#， 6#， 7#， 8#， 10#， 12#螺纹一、螺纹是一种在固体外表面或内表面的截面上，有均匀螺旋线凸起的形状。
钢结构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400×0.6=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；3、螺栓材质的公称屈服强度达1000×0.9=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。
强度等级所谓8.8级和10.9级是指螺栓的抗剪切应力等级为8.8GPa和10.9Gpa8.8公称抗拉强度800N/MM2 公称屈服强度640N/MM2伸长率抗拉强度N/mm2 洛氏硬度公称屈服强度Mpa8.8 800 22-32 640 1210.9 1000 32-39 900 945#钢调质700-850 14一般的螺栓是用"X.Y"表示强度的，X*100=此螺栓的抗拉强度，X*100*（Y/10）=此螺栓的屈服强度（因为按标识规定：屈服强度/抗拉强度=Y/10）===============如4.8级则此螺栓的抗拉强度为：400MPa屈服强度为：400*8/10=320MPa=================另：不锈钢螺栓通常标为A4-70，A2-70的样子，意义另有解释度量当今世界上长度计量单位主要有两种，一种为公制，计量单位为米（m）、厘米（cm）、毫米（mm）等，在欧州、我国及日本等东南亚地区使用较多，另一种为英制，计量单位主要为英寸（inch），相当于我国旧制的市寸，在美国、英国等欧美国家使用较多。
常用螺栓的标准及规格表国家标准规定了螺纹规格为M3~M64,A和B级的六角头螺栓.A级用于D<=24和L<=10D或L<=150mm(按较小值)的螺栓;B级用于D>24或L>10D或L>150(按较小值)的螺栓外六角螺栓尺寸规格(如图)钢结构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400×0.6=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；3、螺栓材质的公称屈服强度达1000×0.9=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。
常用螺丝规格表强度等级所谓8.8级和10.9级是指螺栓的抗剪切应力等级为8.8GPa和10.9Gpa8.8 公称抗拉强度800N/MM2 公称屈服强度640N/MM2 一般的螺栓是用"X.Y"表示强度的，X*100=此螺栓的抗拉强度，X*100*（Y/10）=此螺栓的屈服强度（因为按标识规定：屈服强度/抗拉强度=Y/10）===============如4.8级则此螺栓的抗拉强度为：400MPa屈服强度为：400*8/10=320MPa=================另：不锈钢螺栓通常标为A4-70，A2-70的样子，意义另有解释度量当今世界上长度计量单位主要有两种，一种为公制，计量单位为米（m）、厘米（cm）、毫米（mm）等，在欧州、我国及日本等东南亚地区使用较多，另一种为英制，计量单位主要为英寸（inch），相当于我国旧制的市寸，在美国、英国等欧美国家使用较多。
注1：该螺栓扭矩表是德国工业标准，此表中扭矩为螺栓达到屈服极限的70%时所测定注2：建议锁紧力矩值为：表中数值×(70-80)%一个8.8级M20螺栓的最大承受拉力有多大? (2011-05-28 18:41:24)转载▼标签： 杂谈一、螺栓的分类普通螺栓一般为4.4级、4.8级、5.6级和8.8级。
高强螺栓一般为8.8级和10.9级，其中10.9级居多。
二、高强度螺栓的概念根据高强度螺栓的性能等级分为：8.8级和10.9级。
其中8.8级仅有大六角型高强度螺栓，在标示方法上，性能等级小数点前的数字代表材料公称抗拉强度σb的1%，小数点后的数字代表材料的屈服强度σs与公称抗拉强度之比的10倍。
M20螺栓8.8性能等级公称抗拉强度σb=800MPa，最小抗拉强度σb=830MPa。
公称屈服强度σs=640 ，最小屈服强度σs=660。
（另外一种解释：小数点前数字表示热处理后的抗拉强度；小数点后的数字表示屈强比即屈服强普通螺栓一般为4.4级、4.8级、5.6级和8.8级。
高强螺栓一般为8.8级和10.9级，其中10.9级居多。
二、高强度螺栓的概念根据高强度螺栓的性能等级分为：8.8级和10.9级。
其中8.8级仅有大六角型高强度螺栓，在标示方法上，性能等级小数点前的数字代表材料公称抗拉强度σb的1%，小数点后的数字代表材料的屈服强度σs与公称抗拉强度之比的10倍。
M20螺栓8.8性能等级公称抗拉强度σb=800MPa，最小抗拉强度σb=830MPa。
公称屈服强度σs=640 ，最小屈服强度σs=660。
（另外一种解释：小数点前数字表示热处理后的抗拉强度；小数点后的数字表示屈强比即屈服强度实测值与极限抗拉强度实测值之比。
8.8级的意思就是螺栓杆的抗拉强度不小于800MPa，屈强比为0.8；10.9级的意思就是螺栓杆的抗拉强度不小于1000MPa，屈强比为0.9。
）抗拉强度也叫强度极限指材料在拉断前承受最大应力值，当钢材屈服到一定程度后，由于内部晶粒重新排列，其抵抗变形能力又重新提高，此时变形虽然发展很快，但却只能随着应力的提高而提高，直至应力达最大值。
常用螺栓的标准及规格表国家标准规定了螺纹规格为M3~M64,A和B级的六角头螺栓.A级用于D<=24和L<=10D或L<=150mm(按较小值)的螺栓;B级用于D>24或L>10D或L>150(按较小值)的螺栓外六角螺栓尺寸规格(如图)钢结构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400×0.6=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；3、螺栓材质的公称屈服强度达1000×0.9=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。
常用螺丝规格表强度等级所谓8.8级和10.9级是指螺栓的抗剪切应力等级为8.8GPa和10.9Gpa8.8 公称抗拉强度800N/MM2 公称屈服强度640N/MM2 一般的螺栓是用"X.Y"表示强度的，X*100=此螺栓的抗拉强度，X*100*（Y/10）=此螺栓的屈服强度（因为按标识规定：屈服强度/抗拉强度=Y/10）===============如4.8级则此螺栓的抗拉强度为：400MPa屈服强度为：400*8/10=320MPa=================另：不锈钢螺栓通常标为A4-70，A2-70的样子，意义另有解释度量当今世界上长度计量单位主要有两种，一种为公制，计量单位为米（m）、厘米（cm）、毫米（mm）等，在欧州、我国及日本等东南亚地区使用较多，另一种为英制，计量单位主要为英寸（inch），相当于我国旧制的市寸，在美国、英国等欧美国家使用较多。
强度极限/N 屈服极限/N 强度极限/N 屈服极限/N 强度极限/N 屈服极限/N 强度极限/N 屈服极限/N 强度极限/N 屈服极限/N 强度极限/N 屈服极限/N 强度极限/N 屈服极限/N 强度极限/N 屈服极限/N 强度极限/N 屈服极限/N 强度极限/N 屈服极限/N 强度极限/N 屈服极限/N拉力39.423.752.631.552.642.165.739.465.752.678.963.1105.184.1118.394.6131.4105.1157.7141.9剪切力39.423.752.631.552.642.165.739.465.752.678.963.1105.184.1118.394.6131.4105.1157.7141.9拉力32.119.342.825.742.834.253.532.153.542.864.251.385.668.596.377.0107.085.6128.4115.5剪切力32.119.342.825.742.834.253.532.153.542.864.251.385.668.596.377.0107.085.6128.4115.5拉力55.233.173.644.273.658.992.055.292.073.6110.488.3147.2117.8165.6132.5184.0147.2220.8198.7剪切力55.233.173.644.273.658.992.055.292.073.6110.488.3147.2117.8165.6132.5184.0147.2220.8198.7拉力32.119.342.825.742.834.253.532.153.542.864.251.385.668.596.377.0107.085.6128.4115.5剪切力32.119.342.825.742.834.253.532.153.542.864.251.385.668.596.377.0107.085.6128.4115.5拉力177.4106.5236.6141.9236.6189.3295.7177.4295.7236.6354.9283.9473.1378.5532.3425.8591.4473.1709.7638.7剪切力177.4106.5236.6141.9236.6189.3295.7177.4295.7236.6354.9283.9473.1378.5532.3425.8591.4473.1709.7638.7拉力144.486.7192.6115.5192.6154.0240.7144.4240.7192.6288.8231.1385.1308.1433.3346.6481.4385.1577.7519.9剪切力144.486.7192.6115.5192.6154.0240.7144.4240.7192.6288.8231.1385.1308.1433.3346.6481.4385.1577.7519.9拉力248.4149.0248.4149.0331.2265.0414.0248.4414.0331.2496.8397.4662.4529.9745.2596.2828.0662.4993.6894.2剪切力248.4149.0331.2198.7331.2265.0414.0248.4414.0331.2496.8397.4662.4529.9745.2596.2828.0662.4993.6894.2拉力144.486.7192.6115.5192.6154.0240.7144.4240.7192.6288.8231.1385.1308.1433.3346.6481.4385.1577.7519.9剪切力144.486.7192.6115.5192.6154.0240.7144.4240.7192.6288.8231.1385.1308.1433.3346.6481.4385.1577.7519.9拉力431.1258.7574.9344.9574.9459.9718.6431.1718.6574.9862.3689.81149.7919.81293.41034.71437.11149.71724.61552.1剪切力431.1258.7574.9344.9574.9459.9718.6431.1718.6574.9862.3689.81149.7919.81293.41034.71437.11149.71724.61552.1拉力350.9210.6467.9280.7467.9374.3584.9350.9584.9467.9701.9561.5935.8748.71052.8842.21169.8935.81403.71263.3剪切力350.9210.6467.9280.7467.9374.3584.9350.9584.9467.9701.9561.5935.8748.71052.8842.21169.8935.81403.71263.3拉力603.6362.2804.8482.9804.8643.81006.0603.61006.0804.81207.2965.81609.61287.71810.81448.62012.01609.62414.42173.0剪切力603.6362.2804.8482.9804.8643.81006.0603.61006.0804.81207.2965.81609.61287.71810.81448.62012.01609.62414.42173.0拉力350.9210.6467.9280.7467.9374.3584.9350.9584.9467.9701.9561.5935.8748.71052.8842.21169.8935.81403.71263.3剪切力350.9210.6467.9280.7467.9374.3584.9350.9584.9467.9701.9561.5935.8748.71052.8842.21169.8935.81403.71263.3拉力752.6451.51003.4602.11003.4802.71254.3752.61254.31003.41505.11204.12006.91605.52257.71806.22508.62006.93010.32709.3剪切力752.6451.51003.4602.11003.4802.71254.3752.61254.31003.41505.11204.12006.91605.52257.71806.22508.62006.93010.32709.3拉力612.6367.5816.7490.0816.7653.41020.9612.61020.9816.71225.1980.11633.51306.81837.71470.12041.91633.52450.22205.2剪切力612.6367.5816.7490.0816.7653.41020.9612.61020.9816.71225.1980.11633.51306.81837.71470.12041.91633.52450.22205.2拉力1053.6632.21404.8842.91404.81123.81756.01053.61756.01404.82107.21685.82809.62247.73160.82528.63512.02809.64214.43793.0剪切力1053.6632.21404.8842.91404.81123.81756.01053.61756.01404.82107.21685.82809.62247.73160.82528.63512.02809.64214.43793.0拉力612.6367.5816.7490.0816.7653.41020.9612.61020.9816.71225.1980.11633.51306.81837.71470.12041.91633.52450.22205.2剪切力612.6367.5816.7490.0816.7653.41020.9612.61020.9816.71225.1980.11633.51306.81837.71470.12041.91633.52450.22205.2拉力1217.1730.31622.9973.71622.91298.32028.61217.12028.61622.92434.31947.43245.72596.63651.42921.14057.13245.74868.64381.7剪切力1217.1730.31622.9973.71622.91298.32028.61217.12028.61622.92434.31947.43245.72596.63651.42921.14057.13245.74868.64381.7拉力990.7594.41320.9792.61320.91056.71651.2990.71651.21320.91981.41585.12641.92113.52972.12377.73302.32641.93962.83566.5剪切力990.7594.41320.9792.61320.91056.71651.2990.71651.21320.91981.41585.12641.92113.52972.12377.73302.32641.93962.83566.5拉力1704.01022.42272.01363.22272.01817.62840.01704.02840.02272.03408.02726.44544.03635.25112.04089.65680.04544.05680.05112.0剪切力1704.01022.42272.01363.22272.01817.62840.01704.02840.02272.03408.02726.44544.03635.25112.04089.65680.04544.05680.05112.0拉力990.7594.41320.9792.61320.91056.71651.2990.71651.21320.91981.41585.12641.92113.52972.12377.73302.32641.93962.83566.5剪切力990.7594.41320.9792.61320.91056.71651.2990.71651.21320.91981.41585.12641.92113.52972.12377.73302.32641.93962.83566.5拉力1722.91033.72297.11378.32297.11837.72871.41722.92871.42297.13445.72756.64594.33675.45168.64134.95742.94594.36891.46202.3剪切力1722.91033.72297.11378.32297.11837.72871.41722.92871.42297.13445.72756.64594.33675.45168.64134.95742.94594.36891.46202.3拉力1402.3841.41869.81121.91869.81495.82337.21402.32337.21869.82804.72243.73739.52991.64207.03365.64674.43739.55609.35048.4剪切力1402.3841.41869.81121.91869.81495.82337.21402.32337.21869.82804.72243.73739.52991.64207.03365.64674.43739.55609.35048.4拉力2412.01447.23216.01929.63216.02572.84020.02412.04020.03216.04824.03859.26432.05145.67236.05788.88040.06432.09648.08683.2剪切力2412.01447.23216.01929.63216.02572.84020.02412.04020.03216.04824.03859.26432.05145.67236.05788.88040.06432.09648.08683.2拉力1402.3841.41869.81121.91869.81495.82337.21402.32337.21869.82804.72243.73739.52991.64207.03365.64674.43739.55609.35048.4剪切力1402.3841.41869.81121.91869.81495.82337.21402.32337.21869.82804.72243.73739.52991.64207.03365.64674.43739.55609.35048.4拉力3137.11882.34182.92509.74182.93346.35228.63137.15228.64182.96274.35019.48365.76692.69411.47529.110457.18365.712548.611293.7剪切力3137.11882.34182.92509.74182.93346.35228.63137.15228.64182.96274.35019.48365.76692.69411.47529.110457.18365.712548.611293.7拉力2553.51532.13404.72042.83404.72723.74255.82553.54255.83404.75107.04085.66809.35447.47660.56128.48511.66809.310214.09192.6剪切力2553.51532.13404.72042.83404.72723.74255.82553.54255.83404.75107.04085.66809.35447.47660.56128.48511.66809.310214.09192.6拉力4392.02635.25856.03513.65856.04684.87320.04392.07320.05856.08784.07027.211712.09369.613176.010540.814640.011712.017568.015811.2剪切力4392.02635.25856.03513.65856.04684.87320.04392.07320.05856.08784.07027.211712.09369.613176.010540.814640.011712.017568.015811.2拉力2553.51532.13404.72042.83404.72723.74255.82553.54255.83404.75107.04085.66809.35447.47660.56128.48511.66809.310214.09192.6剪切力2553.51532.13404.72042.83404.72723.74255.82553.54255.83404.75107.04085.66809.35447.47660.56128.48511.66809.310214.09192.6拉力4971.42982.96628.63977.16628.65302.98285.74971.48285.76628.69942.97954.313257.110605.714914.311931.416571.413257.119885.717897.1剪切力4971.42982.96628.63977.16628.65302.98285.74971.48285.76628.69942.97954.313257.110605.714914.311931.416571.413257.119885.717897.1拉力4046.52427.95395.33237.25395.34316.36744.24046.56744.25395.38093.06474.410790.78632.612139.59711.613488.410790.716186.014567.4剪切力4046.52427.95395.33237.25395.34316.36744.24046.56744.25395.38093.06474.410790.78632.612139.59711.613488.410790.716186.014567.4拉力6960.04176.09280.05568.09280.07424.011600.06960.011600.09280.013920.011136.018560.014848.020880.016704.023200.018560.027840.025056.0剪切力6960.04176.09280.05568.09280.07424.011600.06960.011600.09280.013920.011136.018560.014848.020880.016704.023200.018560.027840.025056.0拉力4046.52427.95395.33237.25395.34316.36744.24046.56744.25395.38093.06474.410790.78632.612139.59711.613488.410790.716186.014567.4剪切力4046.52427.95395.33237.25395.34316.36744.24046.56744.25395.38093.06474.410790.78632.612139.59711.613488.410790.716186.014567.4拉力7225.74335.49634.35780.69634.37707.412042.97225.712042.99634.314451.411561.119268.615414.921677.117341.724085.719268.628902.926012.6剪切力7225.74335.49634.35780.69634.37707.412042.97225.712042.99634.314451.411561.119268.615414.921677.117341.724085.719268.628902.926012.6拉力5881.43528.87841.94705.17841.96273.59802.35881.49802.37841.911762.89410.215683.712547.017644.214115.319604.715683.723525.621173.0剪切力5881.43528.87841.94705.17841.96273.59802.35881.49802.37841.911762.89410.215683.712547.017644.214115.319604.715683.723525.621173.0拉力10116.06069.613488.08092.813488.010790.416860.010116.016860.013488.020232.016185.626976.021580.830348.024278.433720.026976.040464.036417.6剪切力10116.06069.613488.08092.813488.010790.416860.010116.016860.013488.020232.016185.626976.021580.830348.024278.433720.026976.040464.036417.6拉力5881.43528.87841.94705.17841.96273.59802.35881.49802.37841.911762.89410.215683.712547.017644.214115.319604.715683.723525.621173.0剪切力5881.43528.87841.94705.17841.96273.59802.35881.49802.37841.911762.89410.215683.712547.017644.214115.319604.715683.723525.621173.0拉力9857.15914.313142.97885.713142.910514.316428.69857.116428.613142.919714.315771.426285.721028.629571.423657.132857.126285.739428.635485.7剪切力9857.15914.313142.97885.713142.910514.316428.69857.116428.613142.919714.315771.426285.721028.629571.423657.132857.126285.739428.635485.7拉力8023.34814.010697.76418.610697.78558.113372.18023.313372.110697.716046.512837.221395.317116.324069.819255.826744.221395.332093.028883.7剪切力8023.34814.010697.76418.610697.78558.113372.18023.313372.110697.716046.512837.221395.317116.324069.819255.826744.221395.332093.028883.7拉力13800.08280.018400.011040.018400.014720.023000.013800.023000.018400.027600.022080.036800.029440.041400.033120.046000.036800.055200.049680.0剪切力13800.08280.018400.011040.018400.014720.023000.013800.023000.018400.027600.022080.036800.029440.041400.033120.046000.036800.055200.049680.0拉力8023.34814.010697.76418.610697.78558.113372.18023.313372.110697.716046.512837.221395.317116.324069.819255.826744.221395.332093.028883.7剪切力8023.34814.010697.76418.610697.78558.113372.18023.313372.110697.716046.512837.221395.317116.324069.819255.826744.221395.332093.028883.7拉力18840.011304.025120.015072.025120.020096.031400.018840.031400.025120.037680.030144.050240.040192.056520.045216.062800.050240.075360.067824.0剪切力18840.011304.025120.015072.025120.020096.031400.018840.031400.025120.037680.030144.050240.040192.056520.045216.062800.050240.075360.067824.0拉力10953.56572.114604.78762.814604.711683.718255.810953.518255.814604.721907.017525.629209.323367.432860.526288.436511.629209.343814.039432.6剪切力10953.56572.114604.78762.814604.711683.718255.810953.518255.814604.721907.017525.629209.323367.432860.526288.436511.629209.343814.039432.6拉力18840.011304.025120.015072.025120.020096.031400.018840.031400.025120.037680.030144.050240.040192.056520.045216.062800.050240.075360.067824.0剪切力18840.011304.025120.015072.025120.020096.031400.018840.031400.025120.037680.030144.050240.040192.056520.045216.062800.050240.075360.067824.0拉力10953.56572.114604.78762.814604.711683.718255.810953.518255.814604.721907.017525.629209.323367.432860.526288.436511.629209.343814.039432.6剪切力10953.56572.114604.78762.814604.711683.718255.810953.518255.814604.721907.017525.629209.323367.432860.526288.436511.629209.343814.039432.6拉力23040.013824.030720.018432.030720.024576.038400.023040.038400.030720.046080.036864.061440.049152.069120.055296.076800.061440.092160.082944.0剪切力23040.013824.030720.018432.030720.024576.038400.023040.038400.030720.046080.036864.061440.049152.069120.055296.076800.061440.092160.082944.0拉力13395.38037.217860.510716.317860.514288.422325.613395.322325.617860.526790.721432.635720.928576.740186.032148.844651.235720.953581.448223.3剪切力13395.38037.217860.510716.317860.514288.422325.613395.322325.617860.526790.721432.635720.928576.740186.032148.844651.235720.953581.448223.3拉力23040.013824.030720.018432.030720.024576.038400.023040.038400.030720.046080.036864.061440.049152.069120.055296.076800.061440.092160.082944.0剪切力23040.013824.030720.018432.030720.024576.038400.023040.038400.030720.046080.036864.061440.049152.069120.055296.076800.061440.092160.082944.0拉力13395.38037.217860.510716.317860.514288.422325.613395.322325.617860.526790.721432.635720.928576.740186.032148.844651.235720.953581.448223.3剪切力13395.38037.217860.510716.317860.514288.422325.613395.322325.617860.526790.721432.635720.928576.740186.032148.844651.235720.953581.448223.3拉力29400.017640.039200.023520.039200.031360.049000.029400.049000.039200.058800.047040.078400.062720.088200.070560.098000.078400.0117600.0105840.0剪切力29400.017640.039200.023520.039200.031360.049000.029400.049000.039200.058800.047040.078400.062720.088200.070560.098000.078400.0117600.0105840.0拉力17093.010255.822790.713674.422790.718232.628488.417093.028488.422790.734186.027348.845581.436465.151279.141023.356976.745581.468372.161534.9剪切力17093.010255.822790.713674.422790.718232.628488.417093.028488.422790.734186.027348.845581.436465.151279.141023.356976.745581.468372.161534.9拉力29400.017640.039200.023520.039200.031360.049000.029400.049000.039200.058800.047040.078400.062720.088200.070560.098000.078400.0117600.0105840.0剪切力29400.017640.039200.023520.039200.031360.049000.029400.049000.039200.058800.047040.078400.062720.088200.070560.098000.078400.0117600.0105840.0拉力17093.010255.822790.713674.422790.718232.628488.417093.028488.422790.734186.027348.845581.436465.151279.141023.356976.745581.468372.161534.9剪切力17093.010255.822790.713674.422790.718232.628488.417093.028488.422790.734186.027348.845581.436465.151279.141023.356976.745581.468372.161534.9拉力36360.021816.048480.029088.048480.038784.060600.036360.060600.048480.072720.058176.096960.077568.0109080.087264.0121200.096960.0145440.0130896.0剪切力36360.021816.048480.029088.048480.038784.060600.036360.060600.048480.072720.058176.096960.077568.0109080.087264.0121200.096960.0145440.0130896.0拉力21139.512683.728186.016911.628186.022548.835232.621139.535232.628186.042279.133823.356372.145097.763418.650734.970465.156372.184558.176102.3剪切力21139.512683.728186.016911.628186.022548.835232.621139.535232.628186.042279.133823.356372.145097.763418.650734.970465.156372.184558.176102.3拉力36360.021816.048480.029088.048480.038784.060600.036360.060600.048480.072720.058176.096960.077568.0109080.087264.0121200.096960.0145440.0130896.0剪切力36360.021816.048480.029088.048480.038784.060600.036360.060600.048480.072720.058176.096960.077568.0109080.087264.0121200.096960.0145440.0130896.0拉力21139.512683.728186.016911.628186.022548.835232.621139.535232.628186.042279.133823.356372.145097.763418.650734.970465.156372.184558.176102.3剪切力21139.512683.728186.016911.628186.022548.835232.621139.535232.628186.042279.133823.356372.145097.763418.650734.970465.156372.184558.176102.3拉力42360.025416.056480.033888.056480.045184.070600.042360.070600.056480.084720.067776.0112960.090368.0127080.0101664.0141200.0112960.0169440.0152496.0剪切力42360.025416.056480.033888.056480.045184.070600.042360.070600.056480.084720.067776.0112960.090368.0127080.0101664.0141200.0112960.0169440.0152496.0拉力24627.914776.732837.219702.332837.226269.841046.524627.941046.532837.249255.839404.765674.452539.573883.759107.082093.065674.498511.688660.5剪切力24627.914776.732837.219702.332837.226269.841046.524627.941046.532837.249255.839404.765674.452539.573883.759107.082093.065674.498511.688660.5拉力42360.025416.056480.033888.056480.045184.070600.042360.070600.056480.084720.067776.0112960.090368.0127080.0101664.0141200.0112960.0169440.0152496.0剪切力42360.025416.056480.033888.056480.045184.070600.042360.070600.056480.084720.067776.0112960.090368.0127080.0101664.0141200.0112960.0169440.0152496.0拉力24627.914776.732837.219702.332837.226269.841046.524627.941046.532837.249255.839404.765674.452539.573883.759107.082093.065674.498511.688660.5剪切力24627.914776.732837.219702.332837.226269.841046.524627.941046.532837.249255.839404.765674.452539.573883.759107.082093.065674.498511.688660.5拉力55080.033048.073440.044064.073440.058752.091800.055080.091800.073440.0110160.088128.0146880.0117504.0165240.0132192.0183600.0146880.0220320.0198288.0剪切力55080.033048.073440.044064.073440.058752.091800.055080.091800.073440.0110160.088128.0146880.0117504.0165240.0132192.0183600.0146880.0220320.0198288.0拉力32023.319214.042697.725618.642697.734158.153372.132023.353372.142697.764046.551237.285395.368316.396069.876855.8106744.285395.3128093.0115283.7剪切力32023.319214.042697.725618.642697.734158.153372.132023.353372.142697.764046.551237.285395.368316.396069.876855.8106744.285395.3128093.0115283.7拉力55080.033048.073440.044064.073440.058752.091800.055080.091800.073440.0110160.088128.0146880.0117504.0165240.0132192.0183600.0146880.0220320.0198288.0剪切力55080.033048.073440.044064.073440.058752.091800.055080.091800.073440.0110160.088128.0146880.0117504.0165240.0132192.0183600.0146880.0220320.0198288.0拉力32023.319214.042697.725618.642697.734158.153372.132023.353372.142697.764046.551237.285395.368316.396069.876855.8106744.285395.3128093.0115283.7剪切力32023.319214.042697.725618.642697.734158.153372.132023.353372.142697.764046.551237.285395.368316.396069.876855.8106744.285395.3128093.0115283.7拉力67320.040392.089760.053856.089760.071808.0112200.067320.0112200.089760.0134640.0107712.0179520.0143616.0201960.0161568.0224400.0179520.0269280.0242352.0剪切力67320.040392.089760.053856.089760.071808.0112200.067320.0112200.089760.0134640.0107712.0179520.0143616.0201960.0161568.0224400.0179520.0269280.0242352.0拉力39139.523483.752186.031311.652186.041748.865232.639139.565232.652186.078279.162623.3104372.183497.7117418.693934.9130465.1104372.1156558.1140902.3剪切力39139.523483.752186.031311.652186.041748.865232.639139.565232.652186.078279.162623.3104372.183497.7117418.693934.9130465.1104372.1156558.1140902.3拉力67320.040392.089760.053856.089760.071808.0112200.067320.0112200.089760.0134640.0107712.0179520.0143616.0201960.0161568.0224400.0179520.0269280.0242352.0剪切力67320.040392.089760.053856.089760.071808.0112200.067320.0112200.089760.0134640.0107712.0179520.0143616.0201960.0161568.0224400.0179520.0269280.0242352.0拉力39139.523483.752186.031311.652186.041748.865232.639139.565232.652186.078279.162623.3104372.183497.7117418.693934.9130465.1104372.1156558.1140902.3剪切力39139.523483.752186.031311.652186.041748.865232.639139.565232.652186.078279.162623.3104372.183497.7117418.693934.9130465.1104372.1156558.1140902.3拉力83280.049968.0111040.066624.0111040.088832.0138800.083280.0138800.0111040.0166560.0133248.0222080.0177664.0249840.0199872.0277600.0222080.0333120.0299808.0剪切力83280.049968.0111040.066624.0111040.088832.0138800.083280.0138800.0111040.0166560.0133248.0222080.0177664.0249840.0199872.0277600.0222080.0333120.0299808.0拉力48418.629051.264558.138734.964558.151646.580697.748418.680697.764558.196837.277469.8129116.3103293.0145255.8116204.7161395.3129116.3193674.4174307.0剪切力48418.629051.264558.138734.964558.151646.580697.748418.680697.764558.196837.277469.8129116.3103293.0145255.8116204.7161395.3129116.3193674.4174307.0拉力83280.049968.0111040.066624.0111040.088832.0138800.083280.0138800.0111040.0166560.0133248.0222080.0177664.0249840.0199872.0277600.0222080.0333120.0299808.0剪切力83280.049968.0111040.066624.0111040.088832.0138800.083280.0138800.0111040.0166560.0133248.0222080.0177664.0249840.0199872.0277600.0222080.0333120.0299808.0拉力48418.629051.264558.138734.964558.151646.580697.748418.680697.764558.196837.277469.8129116.3103293.0145255.8116204.7161395.3129116.3193674.4174307.0剪切力48418.629051.264558.138734.964558.151646.580697.748418.680697.764558.196837.277469.8129116.3103293.0145255.8116204.7161395.3129116.3193674.4174307.0拉力98040.058824.0130720.078432.0130720.0104576.0163400.098040.0163400.0130720.0196080.0156864.0261440.0209152.0294120.0235296.0326800.0261440.0392160.0352944.0剪切力98040.058824.0130720.078432.0130720.0104576.0163400.098040.0163400.0130720.0196080.0156864.0261440.0209152.0294120.0235296.0326800.0261440.0392160.0352944.0拉力57000.034200.076000.045600.076000.060800.095000.057000.095000.076000.0114000.091200.0152000.0121600.0171000.0136800.0190000.0152000.0228000.0205200.0剪切力57000.034200.076000.045600.076000.060800.095000.057000.095000.076000.0114000.091200.0152000.0121600.0171000.0136800.0190000.0152000.0228000.0205200.0拉力98040.058824.0130720.078432.0130720.0104576.0163400.098040.0163400.0130720.0196080.0156864.0261440.0209152.0294120.0235296.0326800.0261440.0392160.0352944.0剪切力98040.058824.0130720.078432.0130720.0104576.0163400.098040.0163400.0130720.0196080.0156864.0261440.0209152.0294120.0235296.0326800.0261440.0392160.0352944.0拉力57000.034200.076000.045600.076000.060800.095000.057000.095000.076000.0114000.091200.0152000.0121600.0171000.0136800.0190000.0152000.0228000.0205200.0剪切力57000.034200.076000.045600.076000.060800.095000.057000.095000.076000.0114000.091200.0152000.0121600.0171000.0136800.0190000.0152000.0228000.0205200.0拉力117120.070272.0156160.093696.0156160.0124928.0195200.0117120.0195200.0156160.0234240.0187392.0312320.0249856.0351360.0281088.0390400.0312320.0468480.0421632.0剪切力117120.070272.0156160.093696.0156160.0124928.0195200.0117120.0195200.0156160.0234240.0187392.0312320.0249856.0351360.0281088.0390400.0312320.0468480.0421632.0拉力68093.040855.890790.754474.490790.772632.6113488.468093.0113488.490790.7136186.0108948.8181581.4145265.1204279.1163423.3226976.7181581.4272372.1245134.9剪切力68093.040855.890790.754474.490790.772632.6113488.468093.0113488.490790.7136186.0108948.8181581.4145265.1204279.1163423.3226976.7181581.4272372.1245134.9拉力117120.070272.0156160.093696.0156160.0124928.0195200.0117120.0195200.0156160.0234240.0187392.0312320.0249856.0351360.0281088.0390400.0312320.0468480.0421632.0剪切力117120.070272.0156160.093696.0156160.0124928.0195200.0117120.0195200.0156160.0234240.0187392.0312320.0249856.0351360.0281088.0390400.0312320.0468480.0421632.0拉力68093.040855.890790.754474.490790.772632.6113488.468093.0113488.490790.7136186.0108948.8181581.4145265.1204279.1163423.3226976.7181581.4272372.1245134.9剪切力68093.040855.890790.754474.490790.772632.6113488.468093.0113488.490790.7136186.0108948.8181581.4145265.1204279.1163423.3226976.7181581.4272372.1245134.9常用螺栓强度/屈服极限一览表353螺栓规格螺栓型号应力截面积工况受力形式 3.6 4.6 4.8 5.6 5.8 6.88.8（D<=M16)8.8（D>M16)9.810.8M1M2M30.46M142.075.0311515719224530312.9性能等级动载荷不控制预紧力控制预紧力不控制预紧力静载荷动载荷静载荷动载荷静载荷静载荷动载荷静载荷动载荷静载荷动载荷控制预紧力不控制预紧力不控制预紧力控制预紧力不控制预紧力控制预紧力不控制预紧力控制预紧力不控制预紧力控制预紧力不控制预紧力控制预紧力不控制预紧力控制预紧力不控制预紧力控制预紧力不控制预紧力控制预紧力M33M36M39M24M27M30M4M5M6M8M10M12M16M18M20M22不控制预紧力控制预紧力4595616948.7814.220.136.65884.3不控制预紧力控制预紧力控制预紧力不控制预紧力控制预紧力不控制预紧力控制预紧力不控制预紧力控制预紧力不控制预紧力控制预紧力不控制预紧力控制预紧力动载荷静载荷动载荷静载荷动载荷静载荷动载荷静载荷动载荷静载荷动载荷静载荷动载荷静载荷动载荷静载荷动载荷静载荷动载荷静载荷动载荷静载荷动载荷静载荷静载荷动载荷静载荷动载荷静载荷动载荷静载荷动载荷静载荷动载荷静载荷动载荷动载荷静载荷动载荷静载荷动载荷静载荷动载荷静载荷静载荷动载荷静载荷动载荷动载荷静载荷动载荷静载荷静载荷动载荷静载荷动载荷静载荷动载荷静载荷动载荷 在本表的计算中，当D<M16时：不控制预紧力AND静载荷安全系数取3.5，不控制预紧力AND动载荷安全系数取4.3，控制预紧力AND静载荷安全系数取2.5，控制预紧力AND动载荷安全系数取4.3；当D》M16时：不控制预紧力AND静载荷安全系数取2.5，不控制预紧力AND动载荷安全系数取4.3，控制预紧力AND静载荷安全系数取2.5，控制预紧力AND动载荷安全系数取4.3静载荷动载荷静载荷动载荷静载荷动载荷静载荷动载荷817976控制预紧力不控制预紧力控制预紧力不控制预紧力。
