螺母［帽］
(screw，cover，acorn)nut，screw cap◇槽螺母［帽］castellated nut，蝶形［翼形］螺母［帽］*，对开［拼合］螺母［帽］clasp［split］nut，盖［套筒］螺母［帽］*，花［冠形］螺母［帽］horned nut，接头螺母［帽］tube union，精制螺母［帽］finished nut，联管［管接］螺母［帽］*，锁紧［防松］螺母［帽］*，凸缘螺母［帽］flanged nut，压下螺母［帽］screw box，眼(圈)［吊环］螺母［帽］eye nut，有槽螺母［帽］slotted nut，圆螺母［帽］circular nut |