m16螺栓尺寸图详图,m12螺栓尺寸图详图

m6m8m10m12m14m16m20 304不锈钢外六角穿墙螺丝长螺杆加长螺栓对穿
考虑到拧紧螺栓的扳手尺寸和必要的边距,角钢上采用的最大螺栓直径见
镀锌膨胀螺丝超长加长铁膨胀螺栓m6m8m10m12m14m16m18m20 10*120
热镀锌高强度螺栓螺丝m14m16热镀锌六角螺丝热渗锌六角螺栓镀锌螺丝
联轴器柱销螺丝对轮销螺栓m8m10m12m14m16m18m20m24m30m36定制 牛筋