screwhead

例句：

1. 1.The screw head was too tight to fit the lock.
   螺丝头太紧，无法安装锁。
2. 2.The screw head broke off during assembly.
   组装时螺丝头断了。
3. 3. The screw head is designed to be easily removed for cleaning.
   螺丝头设计为易于拆卸以进行清洁。