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
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