Rawlplug Uno - what length screws to use?

[The Other Mike]

Been using normal rawlplugs for decades, usually using screws a bit shorter than
the overall length, but I picked up some Unos a while ago, maybe from Screwfix
to top up an order when they had assorted tubs on special offer but never got
round to using them until now.

They look way shorter than the usual wallplugs and I have loads of screws in
stock that appear to be 'too long'

What length screw should I be using, slightly shorter than the plug length + the
thickness of what I am fixing to the wall?

Or would a longer length that punctures a hole in the base of the plug be ok?


http://www.rawlplug.co.uk/index.php?option=com_content&task=view&id=103&Itemid=34

has the overall plug lengths

Yellow 24mm
Red 8mm
Brown 30mm

http://www.rawlplug.co.uk/images/pdf/uno-specification_data.pdf

Shows the fully installed screw just poking through the base of the plug.


--

[Jonathan]

On Jul 24, 1:15 pm, The Other Mike <rootpassw...@somewhereorother.com>
wrote:

> Been using normal rawlplugs for decades, usually using screws a bit shorter than
> the overall length, but I picked up some Unos a while ago, maybe from Screwfix
> to top up an order when they had assorted tubs on special offer but never got
> round to using them until now.
>
> They look way shorter than the usual wallplugs and I have loads of screws in
> stock that appear to be 'too long'
>
> What length screw should I be using, slightly shorter than the plug length + the
> thickness of what I am fixing to the wall?
>
> Or would a longer length that punctures a hole in the base of the plug be ok?
>

> http://www.rawlplug.co.uk/index.php?option=com_content&task=view&id=1...

>
> has the overall plug lengths
>
> Yellow 24mm
> Red 8mm
> Brown 30mm
>
> http://www.rawlplug.co.uk/images/pdf/uno-specification_data.pdf
>
> Shows the fully installed screw just poking through the base of the plug.
>
> --

I've never had a problem using a screw longer than the plug provided
the hole in the masonry is long enough.

Jonathan

[The Medway Handyman]

Exactly.

The action of the Uno plug AFAICS is to be pulled inwards in PB but just
to expand in brick.

Whatever - best bloody plugs ever made.




--
Dave - The Medway Handyman www.medwayhandyman.co.uk

[Andy Dingley]

On Tuesday, 24 July 2012 13:15:41 UTC+1, The Other Mike wrote:

> What length screw should I be using, slightly shorter than the plug length + the
> thickness of what I am fixing to the wall?

I often sink them below the wall surface. I don't really want expansion in the plaster layer anyway.