What type of hub is this?

[Angla]

My Dunbier trailer has Ford hubs that take ford nuts and holden bearings.

Hope this clarifies it for you.

I had to take the bits down to the parts shop and match the size. It was the simplest way for me.

I believe that the hubs have the same size bearing surfaces but it is the axle that is different in size of bearing surface. This means the stud width will not tell you what the shaftsize is.

Chris