lock stud

例句：

1. 1.The lock on the door is broken.
   门锁坏了。
2. 2.He used a bolt to secure the door.
   他用一个螺丝把门固定住了。
3. 3.The car was stolen with its lock studs removed.
   汽车被偷了，锁的螺丝被拆掉了。