Metal to MDF fixings

[Neil Farrer]

Morning, please can anyone help me out.

Normally post on the woodturning pages but my day job requires me to design, on this occasion, wood vennered mdf ceiling panels. These panels are long and require to be hinged down from one side of a corridor.

I need to source a fixing that will secure a top hat section made of 1.2mm galv to the back of the panel to stop long term sag. The MDF panel is 18mm thick. I have been offered several countersunk "standard screws" but the engineering part of my brain, small though it may be, is telling me that if I put one of those stubby fixings with a wide thread into a routed hole, there will be a larger surface digging into the surrounding material and it will therefore be stronger.

Can anyone point me in the right direction?

Thanks

Neil

 

[jasonB]

Auusming you are fixing to the back face then something like a draw runner screw into a 5mm hole will have plenty of grip.

http://www.screwfix.com/p/drawer-runner ... -100/97852

I assume the boards are veneered onto fire rated board or suitable treated to stop spread of flame as thats usually required for corridors

J

 

[Chrispy]

I think you are talking of a Euro screw they usually fit into a "standard" 5mm hole. Hafele call them Varianta screws