need total width of rear sportster hub assembly

If any of you have a 60's or early 70's drum brake rim handy could you please tell me how wide it is from the primary side of the hub to the outside of the brake backing plate where the axle comes through?I'd be a big help for something i'm trying to figure out.My sporty manual doesn't say,or i can't find thanks...............

I'll measure you one tomorrow if you like.
Robbie

RUBONE ,
Thank you very much,i'm about 60 miles from some of my parts.The rear brake assembly being one of them.If you wouldn't mind refreshing my memory they used a 5/8" axle correct?Thanks a million for the help.............

The total width I am getting from edge of hub to out side of backing plate is 6 9/16 inches. The axle is not 5/8 but is 17mm which is the id of the bearings. Measures about .668, 5/8ths is .625.
Robbie

Thank you very much,you've been most helpful.Nice of you to include that informative info on the bearing i.d.,i had no clue,thanks again.............