On Aug 10, 12:19*am, "The Medway Handyman"
wrote:
Found a box of these in the store at the Uni I work at, left behind by
contractors after completion of some new buildings.

Never seen the like before, any ideas what they are for?

http://i99.photobucket.com/albums/l2.../boltything001...

http://i99.photobucket.com/albums/l2.../boltything002...

Sorry about crap photo's.

--
Dave - The Medway Handymanwww.medwayhandyman.co.uk

Its a Tack self drilling screw. Some have a metal washer and others
have a rubber type. Used for fixing to metal the latter for fixing
cladding on roof sheeting. There is a special drill with a clutch for
the use of theses screws.