I am putting up a bunk bed, but lost one of the washers. where can i find another one in my old funiture?

i want to use a washer from something else in my home that i may not be using. i need this washer to finish the bunkbed.I am putting up a bunk bed, but lost one of the washers. where can i find another one in my old funiture?
Go to Home Depot or Lowes and they sell washer kits or specifically sized washers in small packages. Hope this helps.I am putting up a bunk bed, but lost one of the washers. where can i find another one in my old funiture?
its just a washer, you really dont need it if its not on the supporting beams
Just assemble without the missing washer, and go to your local home-improvement store to grab a couple and put them in tomorrow.
home depot, take the one you have and they will match it.