/m12x1公制规螺纹.量规5m14x11m16x1牙.规//环5m18x1.5x1规外螺纹

规.螺纹牙.5m18x1m12x15x1外螺纹/量规规5m14x11m16x1环./公制规/

左.牙攻丝直25钴丝用.牙m14m16m18m20m22x1x11含反机*槽5x2x反