Here's my version! The only regret is the "man", which in Chinese should be "person", but "person" has always seemed so poetically dead, to my sense.

《一颗螺丝掉在地上》 A Screw Drops

一颗螺丝掉在地上 A screw drops

在这个加班的夜晚 In this overtime night

垂直降落，轻轻一响 The straight fall, the light clink

不会引起任何人的注意 That draws no one's attention.

就像在此之前 Just as once before

某个相同的夜晚 On a similar night

有个人掉在地上 A man dropped.