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I need to hang a radiator (160cm wide, 50cm high, total weight around 35kg) via two brackets to a plasterboard wall. The wall is external, so that it has studs (about 12mm deep and 50mm wide) behind the plasterboard and then bricks behind the studs. I am lucky enough to have studs in correspondence of my brackets. However, I was wondering whether the 12mm depth of the studs would be enough for the screws to bite, or if I should reach to the bricks behind the studs and fix the brackets to them. If I can use the studs, how do I make sure that the screws go through the whole 12mm, given that this will be prevented by them hitting the bricks? Thanks.

A while ago I bought a Schneider steel enclosure, a NSYSBMC303012, 300mm x 300mm x 120mm, Spacial series. It houses the power supply and switch gear for my lathe brushless motor conversion It's a long story, but the crappy brushed motor and speed control fitted to my Chinese lathe has been nothing but trouble from the start, I've burned out two motors and one controller and it was clear that the piddly little brushed motor is nowhere near its supposed 450 W rating, so I've fitted a 4 kW rated brushless motor and speed control unit, de-rated to 700 W, which has made a tremendous difference, the lathe seems to be at least three times more powerful now, with loads more torque. Anyway, I mounted all this stuff inside this nice strong steel enclosure, which is screwed to the wall, and fitted with a new no-volt contactor etc. When I bought the enclosure, there was a plastic bag containing all the various grommets, seals, fasteners etc, with each set in a different zip lock bag within the outer bag. Somehow I've managed to lose the bag that had the 4 off half-turn fasteners, that hold the lid on. These are large cross headed 3mm shaft diameter fasteners, that fit through the grey lid grommets (which I fitted to the lid, so I didn't lose them!). They have a coarse half-turn thread affair at the end, that engages in a specially shaped cut out in the main enclosure. I've hunted high and low for a source of these fasteners, none of the electrical factors seem to stock them, neither do places like RS or Farnell. All I can find are the replacement triangular head security fasteners for this enclosure range, but they are £10 EACH!!!, http://uk.rs-online.com/web/p/enclosure-accessories/7839460/ , or this even more expensive type http://uk.rs-online.com/web/p/enclosure-accessories/7839467/ . Having seen these, I was motivated to spend a couple of hours searching everywhere I could think of trying to find the ones I've misplaced (I'm sure I put them somewhere safe - I just can't remember where). Does anyone know where I can buy just 4 off of the standard Schneider fasteners, please? These are used on a wide range of Schneider enclosures as far as I can tell.