On 12/28/2016 10:16 PM, Tricky Dicky wrote:
If you are screwing into the edge of chipboard, rather than use plugs the most common form of fixing in this circumstance is the Confirmat screw.

Richard

Agreed, with one provision. (This is rather like a Multi Monti but
designed for chipboard, for those not familiar: it has a relatively
large parallel core, requiring a suitable pilot hole, and a thin helical
thread). But they are really designed for T-joints, where the screw goes
through the thickness of one part, then into the edge of another.

I would have said that the right screw to fix an alloy angle along an
edge is either a 4 x 3/4 every four inches or so, or a 6 x 2 perhaps
every 9 inches. Depending on which way you want to fit them. Short,
crosswise are less conspicuous, but need more of them so more work.

Countersunk head, with the strip drilled and countersunk to suit.
Ordinary Quicksilver will work, Turbo Gold type arguably better if you
go the 6 x 2 route. (Metric equivalents would be fine).