52 Chevy axle drop (where do these go)

[wildfifty2]

Justed received my dropped axle and modified steering parts back From Nostagia sids. Have everything mostly back together but it has been several weeks since pulled it apart and i do not recall where i pulled these thick flat washers from. There are two left over per side. I am guessing they came from behind the brake backing plate near the large spacers but would love it if some one knew for sure.. Thanks