This is an authentic Breitling new bezel rider watch strew. It is Breitling part number 282.354 and was from a Breitling Super Avenger A13370 watch but it will fit many more. This is one of the screws that goes in the side of your watch bezel.
I have given you photos of your Breitling screw from every angle. Please use them to add to this description.
If you are not sure if this will fit your watch or if you have any other questions then message me. I'm here to help you.