How to fix loose ceiling light fitting screw?

[softkun123]

A screw from the ceiling light timber has come loose and cannot be tightened. How can this issue be resolved, and is it indicative of a more significant problem beyond simply repositioning the screw?

 

  

 

[EricL]

Hello @softkun123 

The screw head must be countersunk into the timber so that it can reach the toggle. I have drawn a quick reference to give you an idea of what needs to be done. The other option is to get a longer screw in the hardware aisle.

Eric

[softkun123]

Thanks @EricL ... I understand countersink in timber.

But Does the thread of screw should tight fit timber or loose os fine?

Because current whole is of size 10g screw. 

If screw threads requires tight fit to timber then I will have to drill another hole in timber

[EricL]

Hello @softkun123 

The screw threads can be loose and it does not need to be a tight fit to the timber.

Eric

[Noyade]

"I think it would need about 60mm of screw ??...

Timber fixture is 35mm thick."

I may not be keeping pace with developments @softkun123. 

But I thought you mentioned a page ago you purchased the M5 Ramset anchor?

If you have, once inserted the 'nut' component is against to, or very close to, the inner gyprock surface.

So yes, once in place something like 50/60mm with be enough to secure the 35mm piece of wood - no countersinking required.

[softkun123]

Thanks @EricL  .. .. I fixed one of the side. But another side has whole approx 15mm  or so see bigger hole in pic. Is there anchor that would fit this wide hole??

Instructions on below suggested toggle bolt says to drill 13mm hole. 

https://www.bunnings.com.au/tox-m6-flip-toggle-bolt_p2260713

Below is the pic of hole. 

 

[JacobZ]

Hi @softkun123,

The Tox M6 Flip Toggle Bolt should work as long as the fixing plate fully bridges the hole so that it clamps on both the front and back of the plasterboard. Looking at the installation instructions, I'd be surprised if it didn't work.

If the fixing plate doesn't bridge the hole, then you will either have to move the light fitting over slightly so that you can drill a new hole or cut out a patch of the plasterboard and replace the patch using this Gyprock CSR 1.5kg DIY Rapid Plaster Repair Kit.

I would give the toggle bolt a try. If it doesn't work, let me know so I can assist further.

Jacob