20 rivets, not of metal; nuts, not of metal; screws, not of metal; bolts, not of metal; furniture fittings, not of metal; door fittings, not of metal; window fittings, not of metal; non metal fasteners, namely, nails; non metal hardware, namely, nuts; hardware, namely, non metal brackets for general use; washers of plastic for using with nuts and bolts, or use in industrial machinery