So I'm trying to get into the whole restoration deal, made myself some scales and cleaned up some razors, but I'm having a bit of a problem finding pins and washers. While I managed to get some 1/16th inch piano wire at a hobby shop that I figure I could use for making pins (although I don't know yet if it will in fact work), I have no clue where to get washers. I dunno about you guys, but I find some of the size designations on some of the sites a bit confusing... for example: from microfasteners.com, (under their 'washers' section) what does #2/4/6/8/etc mean in terms of the interior/exterior diameter of the washers? To further add to my confusion, they also have another section labeled 'Metric screws, nuts, and washers', with washers with sizes like M1.6? If someone could clarify, or simply provide a link to some 1/16th inch washers (and pins if possible, in case my current wire dosn't work out), I would be most grateful. Thanks!
PS: Is there a particular metal that people usually use for pins and washers, or are they all ok?