Long screws - recommendation

Hello

I am in the need of about 5 extra long screws for wood/outdoor that is suitable for 4mm or 6mm pilot holes, that is a length of 200mm. Can do a bit shorter with counterbored holes where needed and anything too long I can trim down.

I only require 3, but I am after not much more than 5 due to any breakages.

The minimum amount I can find is around 20-25 with high costs > £15 - cheaper the better here.
Do you know where I can find these screws?

You might get such screws individually off the shelf in a B&Q but you'll pay a premium for it.

Or do you have a Selco near by? https://www.selcobw.com/vortex-power-screw-6-x-200mm-pack-of-15

eBay - Jones DIY sell pack of 10 6mm x 200mm wood screws for £7.49 inc P&P. It was the first one I found... Sure there will many other sellers on there...

Or find an old fashioned Ironmongers or timber yard that might keep and sell split packs of screws. Giving your (approx) location may help with suggestions.

Do you have a 200mm+ 4mm drill bit for the pilot holes? And do you mean pilot holes or clearance holes?

And can you not use long coach screws?

Thank you.

I had checked all my local stores that should sell screws, there was a couple that didn’t.

I get easily distracted and find myself looking for one thing then 4 hours later I am somehow reading something like a battle of world war 2, to my head having a problem with accepted science, like unable to travel faster than the speed of light but folding space is accepted…

I have brought some extra long screws now thank you, I hope they won’t take forever to get here from eBay.

As far as I can tell there is only one independent timber yard around me, “Solent city” area. They don’t seem to sell anything like screws and a lot of their timber has plant life growing on it.

I have some really long drill bits as of last week, 4mm ø x 200mm, 4mm ø x 400mm and 6mm ø x 400, and some other long bits either on order or already have.

often iff you want just a few long screws for around £5-10 just get frame fixings and discard the plug
but keep in mind the un-threaded section can be most off the length

Lol… I am such a fool… not sure what my brain is doing most of the time, maybe pain/morphine maybe autism maybe a complete miss reading of the measurements… I need 350mm minimum length, maybe some sort of pocket hole job…

You see my tiny workshop started to leak, but that leak got worse and worse, as the water was getting in via the overlapping corrugated clear sheets, going upwards, I thought this would be fine. It means that I had to rebuild a new roof for the area, using the old sheets, I built a frame On the ground, then took the first row of sheets then the next row, adding rubber seals, rubber waterproofing tape, silicone and water resistant spray foam. With better guttering we put the new roof on top of the old roof frame, so now we have 2 3x2’s layered with the 3” side facing upwards, with the door opening added which is 2” and then added 5 inch blocks with another 3x2 underneath that.

With all of this, I have the new roof frame, old roof frame, the door frame a spacer and another frame.

New roof frame 3”
Old roof frame 3”
Door frame 2”
“Door spacer” 5”
Door opening frame “2

Total being 15” of wood to be needed to be screwed down. As I can’t screw through the roofing sheets.

I am getting pictures in a few minutes, with a sketch showing what I mean, and why I designed it this way.