How to unscrew the nut? Bolt puzzle

  • Published on Dec 20, 2021
  • Ali's Bolt puzzle -
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Comments • 674

  • Puzzle guy
    Puzzle guy  5 months ago +172

    Ali's Bolt puzzle -

    • Michael Houvener
      Michael Houvener Month ago

      2 volt on demand water pump
      6 gal

    • shadow rider
      shadow rider 3 months ago

      @Bill DeSmet are you making fun of his accent?

    • Bill DeSmet
      Bill DeSmet 4 months ago

      I would of solved it but you don't speak English...

    • Saverio Pulsinelli
      Saverio Pulsinelli 5 months ago +1

      Why didn’t you say wa la at the end like French folks do

  • Straight Busta
    Straight Busta 5 months ago +3696

    That bolt top is well done, totally didn't see it being a compartment

    • Astro
      Astro 2 months ago

      There was always going to be a hidden tool somewhere in that bolt

    • Millicent Duke
      Millicent Duke 3 months ago

      It’s quite easy to see that there’s something weird about the top when he shows it dead on. The oblique angle he shows it at when he unscrews the top makes it hard to see, but as noted by others, in the split-second shot of the top it’s clear there’s something about the top that’s relevant to solving the puzzle. Maybe a brass puzzle would have hidden the seam better, but steel gives away the trick.

    • TannerTHPS
      TannerTHPS 4 months ago +4

      He purposely didn’t show the top of the bolt for longer than a second to make it seem more surprising. If you look at it irl you’d figure it out in seconds.

    • PhantomHunter Games
      PhantomHunter Games 4 months ago +2

      @Bigmonto I know that the little circular cut exists on some bolts but it doesn't change the fact that they intentionally hid the full face of the bolt-head from the camera to further obscure it.
      It's, "seam" not, "seem"

    • Bigmonto
      Bigmonto 4 months ago +1

      Most bolts have like a circle on top and a little like bevel that angles down into the hexagonal pattern. That’s probably where they hide the seem.

  • Edo Mor
    Edo Mor 3 months ago +1

    You could actually use this in construction... Like when you need an actual nut and bolt or a screw and in this case, you have both! Perfect integration of the seams, I didn't expect that result!

  • Attempt 58
    Attempt 58 4 months ago +31

    I can totally see this being a part of machines that are meant to be secure.

  • Ace of Diamonds
    Ace of Diamonds 4 months ago +5

    I always tell myself "you have to spin it, don't you?" So I can be pleasantly surprised when it's a puzzle that you don't have to spin to win

  • Calayugan Music Man
    Calayugan Music Man 5 months ago +36

    That is just too cool and very interesting and your presentation is so all inspiring!

  • Dennis Hawrylko
    Dennis Hawrylko 5 months ago +28

    Yeah I’m not sure this would be considered a puzzle since you would never know there are tools hidden inside.

    • thatguywhoeatspancakes
      thatguywhoeatspancakes 3 months ago +1

      @aarcade Because rather than having to orient it a certain way, or thinking about it logically, it just becomes a matter of knowing where things are hidden within the object or what bits can unscrew

    • aarcade
      aarcade 3 months ago

      How does internal tools make it not a puzzle? That's a common thing in mechanical puzzles

  • Graduated Money
    Graduated Money 5 months ago +151

    “Here is the twist” well done sir, well done 👏🏼

    • Buddin
      Buddin 5 months ago +3


  • coke hater739
    coke hater739 5 months ago +25

    haha, thats a fun puzzle. i have one that looks a bit similar. its a bolt with a nut in the middle that can't be moved. you have to remove an object from the bolt, but its trapped by the nut. at first, it looks like you can just pull it through a hole at the bottom of the screw, but obviously it wont work. the trick is, you've gotta unscrew the nut the "wrong" way. its a pretty easy puzzle, but i like the engineering of it

  • Lix Webz
    Lix Webz 3 months ago

    I think this might be my favourite puzzle. It's nice and simple but satisfying. Thanks for the video!

  • User Name
    User Name 4 months ago

    There is a similar project in some toolmaking classes. The top center doesn't come out though. The head of the bolt is round and has a left handed thread. The actual hex screws off and had the appropriate sized hex head attached to it.

  • ᵒˢᶜᵃʳɹɐɔso
    ᵒˢᶜᵃʳɹɐɔso 5 months ago +856

    They seem to call everything "puzzles" nowadays. Nice locking system though. It's used alot in decorations here in Norway.

    • Siraj_jr_
      Siraj_jr_ 2 months ago

      @ᵒˢᶜᵃʳɹɐɔsothanks for the reply. I plan to one day move to Norway

    • ᵒˢᶜᵃʳɹɐɔso
      ᵒˢᶜᵃʳɹɐɔso 2 months ago

      @Siraj_jr_ Sorry for late reply, but the snow is melting and I can feel the summer approaching. No restrictions and the society has opened up. So, I would dare to say Norway is good again. 👍🏻

    • kdojun makrýs
      kdojun makrýs 4 months ago +9

      An easy puzzle, is still a puzzle.
      You bunch don't need to be butthurt over it.

    • Siraj_jr_
      Siraj_jr_ 4 months ago

      How is Norway? Is it beautiful?

    • Late Gamer
      Late Gamer 4 months ago +6

      You people do know that jigsaw puzzles are a *type* of puzzle.

  • Mike
    Mike 5 months ago +532

    “The nut is locked with a small Allen screw” me laughing in milwaukee impact. Step aside. No need to take it out

    • Mike
      Mike Month ago

      @Christoffer Orrmalm Utsi are you referring the an m12 drill not being able to unscrew the Allen key? Cuz I was saying if I used an impact wrench on the nut itself to annihilate the Allen key lol

    • Christoffer Orrmalm Utsi
      Christoffer Orrmalm Utsi Month ago

      I bet none of the bits for that battery-driven screwdriver would fit in that screw. Allen screwdriver of the right size would still fit.

    • Mike
      Mike 2 months ago

      @powerpooch2000 out the way for my Putin nuke

    • powerpooch2000
      powerpooch2000 3 months ago

      Out the way with that impact De Walt cut off tool here

    • Daniel Boyd
      Daniel Boyd 4 months ago +3

      I was going say that did it first like hope it locks up it takes less turns to break one and she's going to be messed up might need breaker bar and a cheater 😎😎😎

  • RarelyAccurate
    RarelyAccurate 5 months ago +252

    "Impossible" means you just needed bigger wrenches.

    • Username
      Username 5 months ago +2

      You need a milwaukee impact wrench, then the nut either comes off or the bolt snaps :)

    • Greg Hester
      Greg Hester 5 months ago +3

      I prefer a 4 pound Mexican speed wrench.

    • David Cruz
      David Cruz 5 months ago

      @Milaan Patel yeah, could be.

    • Milaan Patel
      Milaan Patel 5 months ago +8

      @David Cruz that really tiny allen bolt doesnt have that strong hold on the threads. Even hitting nut few times will make it drain.

    • David Cruz
      David Cruz 5 months ago +24

      Yeah, just apply some torque and you'll shear that set screw easily. Never have to mess with it again.

  • Ginger_NoSoul
    Ginger_NoSoul 5 months ago +5

    Once you remove the cap it becomes external, project failed.

  • Eriberto Acedo
    Eriberto Acedo 4 months ago

    I really like this combo bolt with Alan Key I could find many uses for this on my hot rod!!

  • Matt Villines
    Matt Villines 2 months ago

    So you’re gonna see a single bolt with the problem entirely on one end and never consider the other end?
    Clearly there’s a reason this guy needs to be on here solving these puzzles _for_ some of you

  • Brian Green
    Brian Green 5 months ago

    Amazing. Could really use several sizes of those here

  • F R E E D O M
    F R E E D O M 4 months ago

    The alan screw is called a "set screw"
    Cool puzzle 👍

  • Music
    Music 4 months ago

    As a mechanical engineer, this is something very nice to do to lock a bolt!

  • John Choi
    John Choi 5 months ago +21

    Good job avoiding the top part of the bolt -- you know it's visible so you keep it from camera view.

  • This is Mateo
    This is Mateo 5 months ago +1018

    This isn’t a puzzle this is the best lock o have ever seen

    • Aurélien Carnoy
      Aurélien Carnoy 4 months ago +1

      Except if the robber has an alen key.

    • mike
      mike 4 months ago

      @JudgeMental good point

    • mike
      mike 4 months ago

      @claterr berseker I’m sorry if I’ve offended you.

    • Daniel Boyd
      Daniel Boyd 4 months ago

      I've got this little house no one lives in and there's this little thing cal a cordless diagriinder so lost to miny lock this would be to cool to lose. I just double nut a bolt no ever brings two wrenches. But locks are for honest people and sometimes best to leave it open.

    • Panda Legends
      Panda Legends 4 months ago

      Not for me I carry Allen wrench tool

  • Twon Rai
    Twon Rai 5 months ago +3

    Very simple yet seamless puzzle. Very cool.

  • Whellow _
    Whellow _ 4 months ago

    I think I'd have solved this puzzle in less than 15m if it was in my hands!

  • Prince Abishek
    Prince Abishek 4 months ago

    I have a doubt whether it is easy to remove the tool smoothly even it is rusted 🤔

  • Mom's Basement
    Mom's Basement 5 months ago

    Once you remove the Allen wrench, it becomes an external tool.

  • Sincerd Again
    Sincerd Again 5 months ago

    What amazes me is the perfect machine work done on that bolt to make the puzzle.

  • Pod Save England
    Pod Save England 5 months ago +1

    You can see the gabs and seams, you just choose to hide the top of the bolt

  • D rizzle
    D rizzle 5 months ago

    I love how he says its seamless but you can see it in the .002 seconds he shows the top

  • Neuron Activation
    Neuron Activation 5 months ago +2

    If you're trying to remove the nut for the first time, just jerk the bolt around a couple of times, see what comes loose.

  • Wagelly Woo
    Wagelly Woo 4 months ago

    Seamless. It’s beautiful

  • slightlyevolved
    slightlyevolved 5 months ago +63

    Dunno that I'd really call that a puzzle. Is there a trick? Yes. But not one that requires "solving" anything, per sé.

  • Bacon every Sunday
    Bacon every Sunday 5 months ago

    I recommend you use red locktite next time you reassemble those fasteners.

  • Anthony Martinez
    Anthony Martinez Month ago

    That would be a great practical bolt to use. Try to find a tiny Allen wrench, when your out in the field

  • Rumpelstillskin
    Rumpelstillskin 5 months ago +4

    But what if your grip is strong enough to just turn the nut and strip out the set screw.

    • Zac
      Zac 4 months ago

      @DreadlyKnight i mean not even power tools, let alone a machine, with a strong vice, strong wrench, and long enough breaker bar you could apply 10s of thousands of pounds of force onto that set screw. Not saying it will work, but won't know until we try lol.

    • DreadlyKnight
      DreadlyKnight 5 months ago +3

      Yeah I def challenge you to do that. Unless you use a machine good luck

  • Stephen Will
    Stephen Will 4 months ago

    “But here is a twist!” Love the pun lol

  • LiamD613
    LiamD613 5 months ago +281

    Watching through the second time, the top is briefly shown and the seam is clearly visible.

    • diggoran
      diggoran 2 months ago +1

      The classic hide the solution from the camera and claim you wouldn’t be able to find it technique

    • syns
      syns 4 months ago +1

      Exactly lmao

    • daveytn
      daveytn 4 months ago +10

      As an engineer, a bolt with a ring around the top makes me question it's integrity i.e a cheaply made, cheap steel etc

    • Rpg Spyware
      Rpg Spyware 4 months ago +18

      You can see the seam, but because it's a bolt it can be seen as a marking left from the cast.

    • Thatguyoverthere
      Thatguyoverthere 5 months ago +25

      Probably why he holds it out of view for most of the video

  • TK Ow
    TK Ow 5 months ago +10

    “But here is a twist”
    Proceeds to twist the bolt

  • Jon Henning Harborg
    Jon Henning Harborg 5 months ago

    I want to remake this to a geocach!! (cut it right above the Alan screw, and make a hole fore the log there!)

  • 一三Gnefitisis
    一三Gnefitisis 5 months ago

    Easy, figured it out instantly.

  • Aruna
    Aruna 3 months ago

    Finally solved one before he showed it.. highlight of my year

  • John Karavokiros
    John Karavokiros 4 months ago

    This is more useful in real applications than as a puzzle.

  • curtis m
    curtis m 5 months ago

    I solved that in my head as soon as the Allen screw was mentioned.

  • got2strpk
    got2strpk 4 months ago

    It's not often i feel 100% confident i would've figured a puzzle out but my mind went straight to false head when i saw it.

  • Sweet Johnny
    Sweet Johnny 5 months ago

    That came apart really easily, should probably put some lock tight on it.

  • Christian Clark
    Christian Clark 4 months ago

    That "hidden" tool stood out like a sore thumb.😂

  • ツFredi
    ツFredi 4 months ago

    Insane machining on that, but it's a really simple trick puzzle

  • Puzzle Wanderer
    Puzzle Wanderer 5 months ago +3

    I remember this sob. Love this trick 😂

  • Mr sandman
    Mr sandman 5 months ago

    I was thinking spinning it or something like that would cause it to come undone

  • Ian Colquhoun
    Ian Colquhoun 5 months ago +5

    That bolt shouldn't have grading on it (and should probably have a warning not to use it as a bolt)

  • Artem Efimov
    Artem Efimov 4 months ago

    They need to make it a container, so you can hide your important stuff in there.

  • Bug Stomper
    Bug Stomper 5 months ago +2

    That's cheating! I thought you would have to bang the nut until the Alan Screw fell off through loosining.

  • marialiyubman
    marialiyubman 4 months ago

    What if the top gets stuck and then you can’t use external tools?

  • SameMan6
    SameMan6 2 months ago

    This doesn't feel like a puzzle, just a showcase for a well-hidden compartment

  • Kristjan Kala
    Kristjan Kala 4 months ago

    Thanks for showing the top where there “are no visible seams”

  • Zachary Windover
    Zachary Windover 4 months ago

    What if I just twist it super hard until the screw breaks?

  • Codyjrt
    Codyjrt 5 months ago +1

    Nice machining job.

  • Milaan Patel
    Milaan Patel 5 months ago

    Just tap the nut really hard on solid metal few times, allen screw will come loose and you will open it.

  • Liquid Devil
    Liquid Devil 4 months ago

    Damn. I thought it was going to be reverse-threaded…

  • Adil Mzese
    Adil Mzese Month ago

    The bolt top looked like it could come off to me from first glance I don’t think it looked that well designed

  • Michael Jung
    Michael Jung 5 months ago

    Whatever it is... Must be very expensive compare to other regular bolts and nuts. What about the the thread? Smaller bolt will ruin the thread eventually.

  • Roberto Rivera Jr
    Roberto Rivera Jr 5 months ago

    If you unscrew the top and use the tool hidden in the bolt, then the tool is an external device used to solve the puzzle. The solution is then evident. Not using an external tool is a lie.

  • ?!Saturn!?
    ?!Saturn!? Month ago

    That was easy. I knew it was the top as soon as i saw a small indent in the top bold.

  • Seraphina Mateo Zheng
    Seraphina Mateo Zheng 3 months ago

    "Here is a twist."
    Me-"Yeah I know. It's a bolt."

  • Pookiefin
    Pookiefin 4 months ago

    I love these so much!

  • Adam Mullins
    Adam Mullins 4 months ago

    I don't think it's fair to call this a puzzle.. it's just good lathe work.

  • tonyholt90
    tonyholt90 4 months ago

    That is brilliant 👍

  • Smatnm
    Smatnm 4 months ago

    Make it more fun for the next guy by cross threading the nut when you put it back.
    “There’s nothing as secure as a properly cross-threaded bolt.”

  • PLEB
    PLEB 5 months ago +1

    I’m almost certain this info will save my life one day

  • Over Steam
    Over Steam 2 months ago

    Unfortunately it's not as easy as removing the *nut* that happened to be inside someone.

  • Weed Jesus
    Weed Jesus 3 months ago

    I honestly didn’t even think of the top being the tool, I thought it would be placed in the side or bottom maybe

  • jedi Master
    jedi Master 5 months ago

    As someone who works on cars I have 3 counter solutions. Chisel, angle grinder, and blow torch. Lol (This is meant for joking purposes only, although I have used these while working on my car.)

  • Abram Harder
    Abram Harder 5 months ago +1

    Normally I'm unimpressed but this, this I want

  • Anant Vardhan Pandey
    Anant Vardhan Pandey 5 months ago +1

    I have solved this one!!!

  • tone knee
    tone knee 4 months ago

    Awesome thank you 🙂

  • Alex Graf Wolfsburg Collective

    So neat!

  • AnimationLab
    AnimationLab 4 months ago +1

    I love how he said “but here’s the twist” with no pun intended

  • BigTCG
    BigTCG 4 months ago

    Pretty sure this would be the one that when I found out the solution would have sent me tilting off the planet

  • Dom AZ
    Dom AZ 5 months ago +2

    Pretty neat bolt.

  • Locals Only
    Locals Only 2 months ago

    i have similar one
    the bolt head unscrews from bolt with reverse threads

  • jessytheyodellingirl
    jessytheyodellingirl 3 months ago

    I wanna buy all of these puzzles!

  • Kaka Kilo
    Kaka Kilo 3 months ago

    Where u find this bolt, u can also find some sharp tool to remove screw. instead having close look on top of bolt.
    Video is being over talked.
    Great hardworking by creating top of bolt💪

  • ithwitt
    ithwitt 4 months ago

    Impact gun to rescue 😂🤣 that nut coming off one way or another. Grinder could remove it to

  • Rob Mc
    Rob Mc 5 months ago +2

    I thought this was an April fool's joke before I saw the Allen wrench screw.

  • limyohwan
    limyohwan 4 months ago

    I have a steel cage puzzle at home. It has a secret solution - use an angle grinder.

  • Daniel Breault
    Daniel Breault 4 months ago

    I saw it on the top, you could see the difference in height levels

  • Michael
    Michael 5 months ago

    "It is hidden so well that you can't see any gaps or seams..." Uummmm, wrong! There's a reason you very briefly showed the top of the bolt

  • Ken V
    Ken V 28 days ago

    Little known fact :every bolt has that compartment.

  • Nick Bazzano
    Nick Bazzano 4 months ago

    great puzzle 👍

  • zach miller
    zach miller 5 months ago

    Bolt cant be stuck if it's a liquid (acetylene torch sounds intensify)

  • Cookies N’ Cream Gaming

    “You can’t use external tools to solve puzzles”
    *Put your hands down then*

  • Eric Hurst
    Eric Hurst 2 months ago

    I doubt a set screw would be a challenge for my bear claw. 🐻

  • Roger That! 10-4
    Roger That! 10-4 4 months ago

    I love clever design.

  • Black Cauillou
    Black Cauillou Month ago

    Just get insanely strong and unscrew it while breaking the Allen lock

  • ThePrufessa
    ThePrufessa 4 months ago

    Wish you would've let the audience see how well the Allen wrench is hidden.

  • Joseph Wheeler
    Joseph Wheeler Month ago

    That’s awesome but $110 for a bolt is kind of steep lol. Love the vids though when I’m rich I’ll have puzzles 🧩

  • Michael Griffiths
    Michael Griffiths 5 months ago

    Excellent disk lock for my bike!

  • ひろかいりゅざき

    This would be hilarious to leave on some worker's bench

  • Top 10 Best Facts
    Top 10 Best Facts 4 months ago

    Fun fact:Allen screws aren't the real name but rather a brand name,the real name is hex key or screw

  • Nadin Jake
    Nadin Jake 5 months ago

    Crazy thought. But that should just come standard on bolts