On Tue, 09 Aug 2011 14:15:42 +0100, Bob Minchin wrote:

Jethro wrote:
sometimes seen on the drop-down part of trucks ... it has a lozenge
shaped plate of metal with a cutout in the centre which is fixed into a
bolt which screws into the substrate. The flap has a hole which this
faster passes through, and you then slide the metal plate which drops
down and locks the flap in place.

Can you get small (c. 5-10mm ?) ones for a DIY project to screw into
wood ?
It is called an antiluce.

You can get small ones for DIY trailer building but possibly not as
small as you want. They are generally bolt on or weld in.

hth

Bob

Great - thanks. My vague plan, is, having bought and built our BBQ/
Smoking shelter:
http://www.shedstore.co.uk/garden-st...rage/barbecue-
shelter-pt/bbq-plus-barbecue-shelter-5-by-4

to fit a couple of plastic sheets for windproofing when not BBQing.
Originally I was going to drill a large hole underneath a small one and
join the two with a channel the width of a screw. Then I figured that
since sheet plastic can be a pig to work, these fasteners might be
better, if they can screw into wood.

Oh well, I shall experiment.