Forget Bose. They will offer a replacement for $200. This is the second - and last - pair of Bose headphones I will buy because this has happened to both pair. This is clearly a design flaw. There are questions about this all over the internet. Apparently it is a male-female screw specially made for Bose. I could drive to Bose in Framingham, MA, and pick up the screws, but no. Not available. There is probably a warehouse full of them in China. Try threading a thin plastic covered wire or tie through the holes as a temporary measure so you don’t damage the wiring.