nut sizes

Discussion in 'Screwfix' started by suzukisj32, Oct 13, 2007.

  1. suzukisj32

    suzukisj32 New Member

    hello all,,,,

    could some 1 translate the nut sizes like m6,m8,m12 and so as i dont no which to order as im after 8mm,10mm,12mm,13mm and so on to fit my spanners

  2. ШЮΩπ

    ШЮΩπ New Member

    you order nuts to fit bolts..not your spanners
  3. suzukisj32

    suzukisj32 New Member

    yes in theory

    but i needs to buy nuts and bolts but no sure which size as im used to using 10mm,12mm,13mm spanner to do them up so thats the type of nuts and bolts i need to buy etc Hexagon Nut M8 what size is that in english

  4. Captain Leaky

    Captain Leaky New Member

    8mm thread, the head could be various sizes.
  5. CRS - Ross

    CRS - Ross New Member

    not an expert on this, but generally, on the m's - as in m8; m10 etc, the number represents the thread size. I think the m6 is about a 10mm hex head and nut, m8 is 13mm and so on. Hope it helps

  6. suzukisj32

    suzukisj32 New Member

    thanks crs ross

    thats what i ment thanks for that
  7. Captain Leaky

    Captain Leaky New Member

    but not always! :)
  8. screw_fix_boyz

    screw_fix_boyz New Member

    hmmmm. let me think!!! i think that an m8 nut will go with a 8mm bolt, y is this so hard to understand?? learn to read a book in future
  9. Captain Leaky

    Captain Leaky New Member

    Ah yes an m8 nut will fit an m8 bolt, how astute you are

    But what size spanner do you need?

    They can vary between 9, 10, 11 or 12mmm on an m8 thread.
  10. CRS - Ross

    CRS - Ross New Member

    well said sfb, shame that wasn't the question... are you perhaps a staff trainer?
  11. ballyb

    ballyb New Member

    the standard spanners for metric threads are as follows:
    m5 nut/bolt/screw = 8mm spanner
    m6 = 10mm
    m8 = 13mm
    m10 = 17mm
    m12 = 19mm
    m16 = 24mm
  12. Seismic gunner

    Seismic gunner New Member

    An M17 spanner measures 17 mm across the flats An M19 spanner measures 19 mm across the flats ie the hole in the nut is 12 mm and across 2 opposite flats is 19 mm
  13. Wheresthisbitgo

    Wheresthisbitgo New Member

    For standard metric sizes the general rule is that the measurement of the nut (or bolt head) across flats (i.e. the spanner size) is the thread diameter x 1.5 + 1 mm, but as Captain Leaky said, not always.

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