what sized screws for internal door hinges

Discussion in 'Carpenters' Talk' started by jeepster, Jan 6, 2010.

  1. jeepster

    jeepster New Member

    hi all, joiner coming on friday to fit replacement doors, i have bought the doors,

    can you recommend a hinge and screws from the screwfix catalogue and chrome screws and hinges.

    the doors are a mix of solid, premdoors and jb kind 4 panel half glazed.

    all in standard metric of 2040 * 726 * 40mm

    what size are no7 screws,
     
  2. joinerjohn

    joinerjohn New Member

  3. chippie244

    chippie244 Super Member

    I think he meant 1 1/4" No8 screws.
     
  4. big all

    big all Screwfix Select

    "what size are no7 screws, "

    not exact but near enough
    no4=3mm
    no6=3.5mm
    no7=4mm
    no8=4.5mm
    no10=5mm
    no12=6mm

    incidently no7s are a popular size for door and window furniture

    big all
     
  5. chippie244

    chippie244 Super Member

    I stand corrected. I've only ever used the even numbers and didn't know they did odds.
     
  6. jeepster

    jeepster New Member

    hi chippie, could you recommend a type of screw out of the catalogue? do you think its better to get decent hinges,
    i was going to get some Grade 11 Ball Bearing Hinge Polished Chrome 102 x 76mm Pack of 3.at approx £6 for 3

    the existing ones are in brass and are quite thick - approx 3mm
     
  7. Guest

    Go for the ball bearing ones .
     
  8. -chippy_john

    -chippy_john New Member

    The old screw sizes are sort of measured in 32nds of an inch.

    A size 7 screw will measure 9/32" across the head.

    A size eight will measure 10/32" across the head.

    If you haven't worked it out yet they are always 2 less in size than what they measure in 32nds of an inch.

    Hope your old frames are metric height to match the new doors.
     
  9. vote CONSERVATIVE

    vote CONSERVATIVE New Member

    I didn't know they did odd sized screws

    Obviously Chippie244 does not mean you are a carpenter then mate. What does it stand for? !
     
  10. Astramax

    Astramax Super Member

    As mentioned earlier... ball bearing hinges fitted with No 7 screws.
     
  11. vote CONSERVATIVE

    vote CONSERVATIVE New Member

    No!!

    What does Chippie[>244 stand for, cos he obviously isn't a Carpenter.
     
  12. vote CONSERVATIVE

    vote CONSERVATIVE New Member

    No!!

    What does Chippie244 stand for, cos he obviously isn't a Carpenter.

    (I'm still learning the tech stuff!).
     
  13. chippie244

    chippie244 Super Member

    You don't realy NEED the ball bearing hinges but there's no harm fitting them.
    I don't like chromed screws as they are soft and also I don't think SF sell them but as said 1 1/4" 7's or 8's in quicksilver pozi's.

    IWS, if you're going to try to have a go at me learn to write English first you useless ****.
     
  14. vote CONSERVATIVE

    vote CONSERVATIVE New Member

    There you go my dear friend, everybody is WIS to you!
     
  15. chippie244

    chippie244 Super Member

    Trot on *

    [Edited by: admin]
     
  16. I've always used No.7 screws, never really understood why they were used, must be the only odd numbered screw size in use.

    Probably blame the Victorians :)
     
  17. Mof

    Mof Guest

    The screw head diameter is determined by the hinges you get (usualy it will be no7 with 3" hinges)I would only use 1" screws as the frame thicknes you are screwing into is usualy only about 3/4" or 7/8" and any extra length of screw will only stick out of the back of the door caseing. In fact in the old days when screws had a plain shank it was a disadvantage to use long screws as only the shank would be in the frame and the screwed part of the screw would be sticking into thin air.
     
  18. dunc

    dunc New Member

    The screw heads need to fit flush with the hinge, otherwise they will meet and hold the door apart. One inch is good enough on a new door and frame. I use 4 inch steel butt hinges for general purpose interior usage. Fire doors need fire door hinges.

    Don't use the hinge and screws which come in cheap packages.
     
  19. vote CONSERVATIVE

    vote CONSERVATIVE New Member

    Good point about cheap hinges. They are made from thin metal.
     
  20. dunc

    dunc New Member

    That's right I often find doors which have had cheap hinges and screws fitted to them. usually the screw burrs and can't be driven in fully, then the hinge bends and so on. Avoid cheap cellophane packets like the plague. Even some decent hinges are sold with weak screws.
     

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