Stud length

Can anyone tell me how long the axel flange studs are suppose to be on an A-Body8 3/4. These are the studs that hold the brake backing plates on the axel housing.
I have a housing that is missing these studs, and the replacement studs I have seem too long.
The new studs stick out 1 1/8th inches, from the out side of the flange, is this right,???. Seems to long.
Thanks Dave