hexagon socket countersunk flat cap head screw

例句：

1. 1.This hexagon socket is perfect for connecting various electronic devices.
   这个六角形插座非常适合连接各种电子设备。
2. 2. The countersunk screw was designed to securely hold the parts together.
   这种沉头螺钉设计用来牢固地固定部件。
3. 3. The engineer used a hexagon socket to tighten the bolts on the machine.
   工程师使用一个六角形插座来紧固机器上的螺栓。