Discussion in 'Builders' Talk' started by furious_customer, Apr 12, 2019.

  1. furious_customer

    furious_customer Active Member

    Sigh - for my project I need a few M8 x 90mm bolts. (80mm is too short and 100mm will hit another objkect).
    Why do screwfix, toolstation and B&Q stock M8 bolts in every length except 90mm?
  2. CraigMcK

    CraigMcK Well-Known Member

    M8 threaded bar and nuts?
  3. furious_customer

    furious_customer Active Member

    Yeah, that might be only option as I need to fit them tonight.
    Then perhaps order the correct size from Amazon and replace them later.

    Can't wait for Amazon to open a trade counter!
  4. DIYDave.

    DIYDave. Well-Known Member

    So you’ve now got a grinder, buy a metal cutting disc, wind nut onto bolt first, clamp into workbench/vice and then cut off what you need

    Norton thin slitting disc, cheap and cuts very well
    furious_customer likes this.
  5. dinkydo

    dinkydo Active Member

    An hacksaw works as well
  6. furious_customer

    furious_customer Active Member

    That's what I was thinking Dave, but I wonder if after cutting the bolt like this I would still be able to get the nut off or on?
    Not sure if the cut will be clean enought for that?
  7. dinkydo

    dinkydo Active Member

    The nut will come off easily, an hacksaw cut will leave less rag, put the nut on first then cut, if you want use a metal file to file off any rag and then unscrew the nut it will go back on easily, the link shows two nuts being used but one will do.
    furious_customer likes this.
  8. DIYDave.

    DIYDave. Well-Known Member

    Read my post again geez ..... :)

    Wind nut on first
    Remove nut
    This will straighten the thread at cut point if a little deformed

    Thin metal slitting disc is what you want

    Less than 5 seconds per cut :)

    Of course, as above, could use a hacksaw but you’ve now got a shiny new power tool so why go backwards eh !


    (check disc specs first though for compatibility in instruction manual)
    Last edited: Apr 12, 2019
    furious_customer likes this.

    CJASENG Member

    This is more less what I'd do. Wind Nut on, hacksaw down to size, file the end to a chamfer and unscrew nut.
  10. furious_customer

    furious_customer Active Member

    Gotcha...this is exactly what I will do - thanks!
  11. furious_customer

    furious_customer Active Member

    Thanks guys, worked a treat - put a 1mm cutting disc in the grinder and chopped the 110mm bolts down to 90mm.

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