Ikea uses them to tie cabinets together. You drill through the side into the other cabinet and screw them together. If you have a local Ikea you can pick up some (probably metric) in the open= bins by customer service. I had seem them listed as binding screws. Here are some other names: http://www.chicagoscrews.com/ http://www.screwpost.com/ -----Original Message----- >From: peter green >Sent: Aug 6, 2010 7:09 PM >To: "Microcontroller discussion list - Public." >Subject: [ee]proper name for a fastner > >When dismantling some items (can't remember what right now) and when=20 >watching "how it's made" on discovery i've seen a fastner that is=20 >similar to a screw but rather than having a rod of metal with thread on=20 >the outside it has a tube with a thread on the inside. > >Serveral times i've throught such a fastner would be handy but without a=20 >name I can't search for suppliers. Anyone here know what it's called? >--=20 >http://www.piclist.com PIC/SX FAQ & list archive >View/change your membership options at >http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .