I apologize for the confusion. I made a elementary error in measuring. I forgot that I put my ruler/meter stick over 1cm when measuring so that both sides were resting on the rim. It is 625, but the distances remain close to the same, only now it is between 3x and 4x. 3x is 300 and 302, 4x is 310 and 308. This makes sense because the old hub has the same flange diameter, but slightly different center to flange distances, and are 309mm and 307mm