The English word “screw” bears many meanings include “a rod-shaped piece with a spiral groove and a slotted or recessed head designed to be inserted into material by rotating (as with a screwdriver ) and used for fastening pieces of solid material together”, and in vulgar slang, “an act of sexual intercourse”.
The slang term “screw this” usually has meaning equivalent to “forget about it”. Unfortunately English slang often does not direct translate very well contextually into Chinese or Japanese.
This young man probably wanted to express his angst of “screw this” in Chinese (螺絲釘這), yet did not have the patience to verify if the contextual translation was correct or not. His tattoo literally means “insert screw-nail here”, which is something that comes with furniture assembly instruction.
Or he could be a loyal employee of IKEA corporation.