强度区分最小破断强度材质螺栓M1416182022242730333639424548525660646872768085901001101201、2、3、
螺母22m24273032364146505560657075808590951001051101151201301451551754.8392MPa一般构造用钢扭矩值KGMNM76910141823324560751001201551802302803604105105806607508309001080140016702030981371762253144415887359801176151917642254274435284018499856846468735081348820105841372016366198946.8588MPa机械构造用钢扭矩值KGMNM10981421283448659011515018024028035042053061076087010001100125014001650205025503050137206296333470637882112714701764235227443430411651495978744885269800107801225013720161702009024990298908.8784MPa铬铝合金钢扭矩值KGMNM14137212941557010512515018022028032040048061079090011001290150018502250250020628440253968610291225147017642156274431363920470459787742882010780126421470018130220502450010.9941MPa铬铝合金钢扭矩值KGMNM1716525355878100150200210250300390450570670860110024734156976598114721962206024532943382644155592657384371079112.91176MPa铬铝合金钢扭矩值KGMNM23225364969931201802402503003704705506808501050135035348067691111761764235224502940362646065390666483301029013230以上是德国工业标准， 表中扭矩值为螺栓达到屈服限的70%时所测定。建议锁紧力锯值为：表中数据X（70－80）%
例如： M48, 8.8 级螺栓， 则锁紧力矩为 400 X 80% ＝320（kg、m）拆松力矩为锁紧力矩的1.5－2倍。
例如：上例锁紧力矩为320（kg、m),而拆松力矩则为320X（1.5－2）＝480－640（Kg、
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