When you consider the bullet casing next to it is only 9mm wide, I definitely think it’s a hair. A thick hair maybe, but it’s just too thin to be a tie or something else I can think of. It’s under 1mm wide.
Above you mentioned that it was a male hair. I'm missing something. How can you tell it belongs to a male?
What I see is a coarse hair. The follicle bulb is clearly visible - but I wonder if it belongs to a human at all, or perhaps to a coarse-coated dog, horse or other animal the person who dropped it had been in contact with.