crwdns2933897:0crwdne2933897:0

In need of replacement circular washer for the trackpad assembly

I lost 1 circular washer of the 9 washers used in the trackpad assembly. Does anyone know the material and exact dimensions of this washer and/or have an idea of where to get a replacement one? I appreciate any help.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0
crwdns2889612:0crwdne2889612:0 2
crwdns2934285:0crwdne2934285:0