LEGO train tracks have 3 holes in each of the segments:

Train Tracks

I understand the two outer holes are used with a throw-away piece to keep them stacked while shipping, but what is the center hole for? Is it just for saving a bit of plastic? Or perhaps just a planned 'shipping' feature that was never used?

  • 7
    Throw-away piece? Throw-away piece? You don't throw away LEGO parts!!!
    – Joubarc
    Commented Dec 17, 2013 at 5:19
  • 3
    Indeed, you keep those pieces to keep your rail bits in line in storage.
    – gev
    Commented Dec 17, 2013 at 7:06
  • 2
    I bet you keep the bit in the middle of the coin sprue too :) . Seriously though, use a longer metal piece to hold more tracks together. The plastic holder is just a waste of space, and seeing as it's crimped on the end it looks bitten. No bite marks in my collection thank you.
    – Josh B
    Commented Dec 17, 2013 at 21:49
  • I'm just saying, I used on of these in a MOC once.
    – Joubarc
    Commented Jan 23, 2014 at 15:04

1 Answer 1


The larger hole is present in older 9V track as well:

9v curved track

I've never actually done this, but I've always assumed that the hole is there so that the track can be screwed or nailed down if desired to create a semi-permanent layout. This is common practice with traditional model railroad track:

HO track with nails

  • I'm fairly confident that's the reason. There was a hole in 12v gray sleepers as well, by the way.
    – Joubarc
    Commented Dec 17, 2013 at 5:19
  • I suppose it makes sense with the curved rail pieces since they don't clutch directly on to a baseplate in the way straight pieces do. It
    – Ambo100
    Commented Dec 17, 2013 at 10:33
  • 3
    Given that even a large track layout doesn't weigh much, and the train itself does, the track can slip around quite a bit as the train goes around corners, unless the track is secured to the surface or weighted down with attachments. I am fairly sure that this is what that hole is for. It's even tapered, to fit a screw head or nail head flush. Commented Dec 17, 2013 at 14:08
  • 1
    Yeah, the countersunk nature of the hole makes me pretty certain this is for screws/nails. Not sure why I didn't think of it earlier :)
    – Josh B
    Commented Dec 17, 2013 at 21:50
  • The countersinking does as said give the likely reason. Interestingly (or not) I noted a picture of a piece of track via LDdaw in another question and you could just about make out the fact the central hole on that generated image was countersunk too.
    – AndyF
    Commented Jan 8, 2020 at 23:35

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.