How to fix this screw?

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2

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  • frugalmacdugal
    frugalmacdugal Posts: 10,077 Forumite
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    Hi,


    it looks like a very flimsy plastic seat, so need to know what the screw is going into under the seat.


    CHAIR.jpg
  • HappyUser
    HappyUser Posts: 301 Forumite
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    Actually I figured out there supposed to be a bolt there but for some reason now the screw cannot protrude enough for a bolt to be fixed.



    Can I take measurements of the screw and give them to a shop online and send me relevant screws and bolts?


    And how can I make sure that the bolt won't unscrew again?
  • frugalmacdugal
    frugalmacdugal Posts: 10,077 Forumite
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    Hi,


    can you give us a picture of the underside?
  • unrecordings
    unrecordings Posts: 2,017 Forumite
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    HappyUser wrote: »
    Actually I figured out there supposed to be a bolt there but for some reason now the screw cannot protrude enough for a bolt to be fixed.

    Can I take measurements of the screw and give them to a shop online and send me relevant screws and bolts?

    And how can I make sure that the bolt won't unscrew again?

    Be sure to take measurements of one of the other bolts a reference of what works on the other three legs - post the info here - although as others have said, if you can manage it, a photo might be better
    as technically screws & bolts are different means of fastening things - you use a nut and bolt or you use a screw, depending on what you're trying to connect together

    Why am I in this handcart and where are we going ?
  • HappyUser
    HappyUser Posts: 301 Forumite
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    Mmm the screw is like this:


    https://unsee.cc/0b1f753f/


    So, I assume the turns are still fine and only the bolt is missing. But how can I secure the bolt so that it won't get lost again?
  • unrecordings
    unrecordings Posts: 2,017 Forumite
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    So it's a bolt, can't really tell whether M5 or M6. Only has a thread on the last 12mm so of the shaft, which looks very tired.

    A standard M5 pozi (or M6 if it's actually M6) x 60mm might do the trick (with nut & sprung washer of course)

    Anyone else agree..?

    Why am I in this handcart and where are we going ?
  • Jackmydad
    Jackmydad Posts: 9,186 Forumite
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    unrecordings wrote: »
    So it's a bolt, can't really tell whether M5 or M6. Only has a thread on the last 12mm so of the shaft, which looks very tired.

    A standard M5 pozi (or M6 if it's actually M6) x 60mm might do the trick (with nut & sprung washer of course)

    Anyone else agree..?

    Agree. Difficult to make out the diameter though. As you say, M5 / M6

    If it keeps coming undone I'd use a "self locking" nut. Sometimes called a "Nyloc" nut.
  • B_G_B
    B_G_B Posts: 502 Forumite
    edited 18 August 2019 at 8:04PM
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    Just to add my pennyworth. I would use a nyloc nut or locking compound (loctite or similar). I would not use a spring washer as these have been shown to not work in most cases, and can actually make the locking of nut and bolt less effective.
  • Norman_Castle
    Norman_Castle Posts: 11,871 Forumite
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    HappyUser wrote: »

    So, I assume the turns [thread] are still fine and only the bolt [nut] is missing. But how can I secure the bolt [nut] so that it won't get lost again?
    Either buy a locking nut or cover the thread in glue. PVA or wood glue might work. As a replacement nut will only be a few pence buy a few so if it does vanish you will have a spare.
    If you've any diy friends or family its likely they've got a tub of nuts, ask them.
  • unrecordings
    unrecordings Posts: 2,017 Forumite
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    B_G_B wrote: »
    Just to add my pennyworth. I would use a nyloc nut or locking compound (loctite or similar). I would not use a spring washer as these have been shown to not work in most cases, and can actually make the locking of nut and bolt less effective.

    I'd say Nyloc is a good call, I've used M3 versions and they just won't come loose (the old skool alternative being the use of two standard nuts instead of one)

    Why am I in this handcart and where are we going ?
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