HB8383-2013GH4738MJ螺纹十二角自锁螺母Self-lockingnuts,double,hexagon,MJthread,GH47382013-10-13发布2014-03-01实施中华人民共和...
HB8382-2013GH2132MJ螺纹十二角自锁螺母Self-lockingnuts,double,hexagon,MJthread,GH21322013-10-13发布2014-03-01实施中华人民共和...