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Advice on picking correct screw/wall plug for bookshelves

Discussion in 'General DIY' started by Sigh Martini, 10 Mar 2021.

  1. Sigh Martini

    Sigh Martini

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    Hi there, I've been googling but I seem to be getting more confused.

    I am hanging 30cm x 120cm particleboard IKEA bookshelves with 3 brackets into brick masonry and I can't work out what size screws and wall plugs to use. Ideally they'll be bearing two layers of books so they'll need to be strong.

    I have an impact drill and I've hung a couple using 40mm screws/plugs and they feel secure but now I'm worried the screws are too short?

    https://www.ikea.com/gb/en/p/bergshult-ramshult-wall-shelf-white-s99290623/

    The brackets are 20mm thick and connect to the wall at two points:

    • For the top connection, the screw and plug go directly into the wall and you let the head of the screw stick out a little. The bracket hangs upon it via a small recessed part of the bracket
    • For the bottom one a screw goes through the 20mm bracket and then into the wall

    I hope that makes sense

    Many thanks
     

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    Last edited: 10 Mar 2021
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  3. Burnerman

    Burnerman

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    Personally I’d go for 50mm screws, probably x 4.5 so the head fits into the keyhole slot.
    If you are going direct into brick you’ll probably be fine with what you’ve done - the depth of any plaster can have an effect.
    John :)
     
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  4. Sigh Martini

    Sigh Martini

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    .
     
    Last edited: 11 Mar 2021
  5. Sigh Martini

    Sigh Martini

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    Thanks for this. So if I go for a 4.5 or 5 gauge and 50mm in length then I should use a 5.5 masonry drill bit and yellow rawl plugs, is that right?
     
  6. johnny2007

    johnny2007

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    Use 8mm duopower fischer plugs with 50mmx5 screws and you can hang a lorry on the wall.
    Remember to clean the hole properly before inserting the plugs.
     
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  7. Burnerman

    Burnerman

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    For 8mm plugs, use a 8mm masonry drill, for 6mm plugs its a 6mm drill and so on.
    Only my personal choice but its Fischer plugs for me and Spax screws.
    John :)
     
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  8. johnny2007

    johnny2007

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    There is a man whose work will last...
    I knew I wasn't alone.
     
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