用力矩扳手正规测定拧紧力矩螺栓规格 dmm10螺距 Pmm1.25计算拧紧力矩 TN·m66.1屈服强度 ssMPa900螺距粗牙M5M6M8M10M12M14M16M18M20M24M27M30M33M36M39M42M48M52M56M60M64M68M72M76M800.811.251.51.75222.52.5333.53.5444.5555.5(5.5)66666螺栓公称应力截面积 Asmm261.2外螺纹小径 d1mm8.647外螺纹中径 d2mm9.188螺纹原始三角形高度 Hmm计算直径 d3mm0.8*TN·m0.6*TN·m1.0838.46652.939.66螺纹规格细牙/0.7511.251.51.51.52222(3)(3)33(4)(4)(4)4444444/（0.5）0.7511.251.251.251.51.51.51.522223333333333//（0.5）0.7511111111.5；11.51.51.52；1.52；1.52；1.52；1.52；1.52；1.52；1.52；1.52；1.52； 1.5///（0.5）(0.75),(0.5)(0.75),(0.5)(0.75),(0.5)(0.75),(0.5)(0.75),(0.5)(0.75)(0.75)(0.75)(1),(0.75)(1)(1)(1)(1)(1)(1)(1)(1)(1)(1)(1)(1) 请在白色单元格输入相对应的数值，其他不要动。 通常取计算值的0.8倍左右作为实际应用的拧紧力矩值。（见绿色单元格）螺纹联接件常用材料及机械性能钢号10Q235-A354540Crsb MPa335~400375~60530600980ss MPa205235315355785螺纹联接件对应强度等级的机械性能等级3.64.85.68.810.9sb MPa3004005008001040ss MPa180320300640900
螺栓拧紧力矩的计算公式
