Spindle Help

805moparkid said
casting number is

3402738N124

1.375 (+.020 in a couple of spots)on the inner race

You are aware that "Casting numbers" are different than "Part Numbers" aren't you?
Anyway those casting numbers are 73-76 A Body Drum brake spindles.

I currently have 3 pairs of them out in the garage, and 2 pairs have good, readable numbers on them, same as yours.

So then, order your parts accordingly, nothing more to add.
JV.