Not sure what sort of bolt / bracket I need

[deviii]

DIYing a corner basin in my downstairs toilet and have bought a pedestal and sink to fit myself. Getting someone qualified in to put in the pipework up to the isolation valves then I should be sorted.
Problem is the company that sold me the sink said I just need to silicone it to the pedestal (it just sits on top with drain and tap holes drilled) but I'm not convinced that'll do a good enough job.
Included a pic of the back of the sink where there's clearly holes for a bracket of some kind.
In my head I envisioned a hook attached to a long threaded bolt and something like a butterfly nut on the other end to pass through the wood top and secure by tightening.
I've searched for something like this but not managed to find anything. Does something like this exist?

 

[snowhead]

Normally they have brackets similar to the linked below , although your basin does look like it's designed for a specific corner bracket.

Basin Brackets

Basin hanger brackets. Pressed steel.

www.toolstation.com

 

[ShaunCorbs]

Fischer basin fixings required

 

[Basher]

'Fischer basin fixings"

On one side only from a practical point of view?

 

[ShaunCorbs]

Both as it’s a corner basin one in each wall

 

[deviii]

Sorry guys, I think I've confused you by saying it was for a sink pedestal. My bad - using the wrong words. It's a corner wood unit, so it's being mounted to the top of the unit and the bracket would hold the sink to the top. I drew what I had in mind.
Something like a hook (purple part) on top of a threaded bolt that would be long enough to pass through the top of the unit and secured with a washing / nut.

 

[ShaunCorbs]

Nope never seen one like that normally get stuck to the unit with sticks like ****

 

[Basher]

Sorry guys, I think I've confused you by saying it was for a sink pedestal. My bad - using the wrong words. It's a corner wood unit, so it's being mounted to the top of the unit and the bracket would hold the sink to the top. I drew what I had in mind.
Something like a hook (purple part) on top of a threaded bolt that would be long enough to pass through the top of the unit and secured with a washing / nut.

It seems you've invented a fixing method where most would use sealant/adhesive.

But you could try something like this (assuming basin holes are right size):

Zinc Plated Machine Thread 'L' Hook M5 x 50mm

L-hooks are very useful fixings for general purpose use around the home. They are ideal for hanging pictures and mirrors, but have endless possible applications, for example you can use them as cup hooks or to hang up light duty ladders in the garage. These L-hooks have a machine thread, which...

www.tcfixings.co.uk

 

[toucan]

Sorry guys, I think I've confused you by saying it was for a sink pedestal. My bad - using the wrong words. It's a corner wood unit, so it's being mounted to the top of the unit and the bracket would hold the sink to the top. I drew what I had in mind.
Something like a hook (purple part) on top of a threaded bolt that would be long enough to pass through the top of the unit and secured with a washing / nut.

if its going to sit on a unit /worktop then you don't need brackets. Just use some silicone or grab adhesive - make sure surfaces are clean & degreased - you only need a small amount.