I've met a lot of people who describe themselves in such a way.
I think the problem is that the DSM relies on very arbitrary and subjective behavioural signs to diagnose a lot of what it considers a mental illness. That is something that really annoys me about the psychiatric profession. I would be quite keen to see a more mathematical and objectively grounded theory of mental disorder than the vague, hand waved criteria that we have now.
In your case though, I'll quote a character from the Rosie Effect (an amazing book by the way which you might enjoy reading) who said that the main criteria is... pathology. If you are able to maintain an adequate lifestyle (job, education, family, friends) then you're fine. It's only when those "autistic" traits interfere with your life and preclude you from reaching your potential that they're considered abnormal and a diagnosis is apt.