网络释义
1)button head screw; button headed screws,cheese head screw,fillister head(ed) screw,round-head screwcheese head screw cap screw,圆头螺钉2)half-round screw,round-head screw,半圆头螺钉3)button-bead rivet,flat round head rivet,oval head screw,扁圆头螺钉4)raised cheese-head screw,凸圆头螺钉5)oval head screw,椭圆头螺钉6)slotted round-head screw,有槽半圆头螺钉