85 k10 hub question

I'm working on a 85 k10 chevy. I'm putting some new wheel bearings in my truck and I need a part that I don't know the name of or where to get it. I've tried the local part stores and come up with nothing. The part I need is " spring retainer plate" thats what they call it in the chiltons manual anyway. It goes in the hub after the wheel bearing lock nut, and before the pressure spring.If any one can help me track this down it would be appreciated.

Try a 4WD specialty place they carry a lot of parts local parts stores don't have. Usually cheaper than the dealer.