一般强力螺栓拧紧力矩表面状态u总强度等级旧新W测量尺寸M4M5M6M8M10M12M14M16M18M20M22M24M27M30M81M10125M12125M1215M1415M1615M1815M2015M2215M242M272M3022755952346801251952703855106609801350254988831402103054255707201050145038801332641101802753905407209301400185035681251151902954256008001000150020506G69表面镀锌01258G8910K10912K129469516397713521533045565087011001650225042821501402353505107209601200180025006G698G8929601025498613521029041055071010501450275295901502253254606107801150160010K10941851435691201902954055807801000150020003873135125210315460640860110016002250
Nm12K129491017418314523035548569093012001800240045881601502503805507701050130019502700
加工表面014
公制普通螺纹
公制细牙螺纹
注：u总是指螺纹、螺栓和螺母接触面的摩擦系数。镀镉或镀铜的螺栓和螺母，其拧紧力矩值比镀锌的低25，自锁螺母的拧紧力矩应高于上面值的10。双头螺栓用拧紧力矩的一半拧紧在工件里。
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