螺栓拧紧力矩查询和预紧力计算螺栓规格拧紧力矩（牛.米）性能等级5.6性能等级8.8性能等级10.9M65-76-1011-14M812-1519-2422-29M8×114-1821-2824-31M1024-3035-4743-53M10×1.2528-3241-5348-59M10×130-3642-5451-58M1242-5360-7280-101M12×1.544-5666-8288-107M12×1.2547-6072-8594-114M1472-8796-126144-175M14×1.580-96106-132160-204M16108-127156-200199-234M16×1.5116-144168-204214-252M18156-180192-226240-260M18×1.5162-192204-240250-300M20216-243312-372384-439M20×1.5240-264324-384433-480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。附:螺栓预紧力对照表强度等级4.86.88.810.912.9最小破断强度392Mpa588Mpa784Mpa941Mpa1176Mpa材质一般构造用钢机械构造用碳钢铬铝合金钢镍铬铝合金钢镍铬合金钢螺栓对边mm扭距值N.mM6116～12M8138～1516～30M101718～3036～63M121930～4770～110M14226998137165225M162498137206247363M1827137206284341480M2030176296402569480M2232225333539765911M24363144706869811176M2741441637102914721764M3046588882122519622352M33507351127147020602450M36559801470176424532940M396011761764215629433626M426515192352274438264606M457017642744313644155390M487522543430392055926664M528027444116470465738330M5685352851495978843710290M60904018597877421079113230M6495499874488820M681005684852610780M721056468980012642M7611073501078014710M8011581431225018130M8512088201372022050M90130105841617024500M1001451372020090M1101551636624990M1201751989429890M125180注：1、上表为德国工业标准；表中扭矩值为螺栓达到屈服极限的70%时所测定；2、表中锁紧力矩为最大值；实际工作时，建议锁紧力矩为表中数据×（70~80）%。
