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Unscrewing Triangular Bolt Without Dedicated Screwdriver: Easy Tips & Tricks

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How can I unscrew a triangular screw without a dedicated screwdriver?

The easiest and most correct solution is to use the proper Tri-Wing (trigram) bit; sets of matching bits are cheap and can be bought in hardware stores or online [#18254549] [#18255130] [#18256853] If you only need a temporary workaround, you can try reshaping a flat-blade screwdriver so it fits the two Y-legs [#18254547] For a badly damaged head, some users suggest cutting a slot with a Dremel/angle grinder and then turning it with a flat screwdriver, or grabbing the head with pliers/clamp if there is enough space [#18257228]
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 18254516
    Anonymous
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  • #2 18254521
    stanislaw1954
    Level 43  
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    Jan Rodo wrote:
    My job is to unscrew the triangular screw,
    More details, or a photo.
  • #3 18254528
    Anonymous
    Level 1  
  • #4 18254547
    stanislaw1954
    Level 43  
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    Now I can see 2 possibilities:
    adjust the flat-blade screwdriver so that it fits into the two Y-legs
    buy a screwdriver or a bit that looks like this - I don't remember the name of the tip, but in a hardware store, you will get it without any problems.
  • #5 18254549
    dabu
    Level 32  
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    Look for a tri-wing or trigram.
  • #6 18254563
    Anonymous
    Level 1  
  • #7 18254588
    stanislaw1954
    Level 43  
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    Jan Rodo wrote:
    I've already done a few flat ones
    Well, people learn from mistakes. If the first or second attempt was unsuccessful, you had to give it a rest, go to the store, even in small towns there are "technical" stores and you would choose something.
  • #8 18254592
    Anonymous
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  • #9 18254603
    stanislaw1954
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    Jan Rodo wrote:
    In Podlasie, this technology has probably not arrived yet ...
    Well, there is a village with a commune seat, or the nearest town. If I do not mention the district, you would probably buy it there.
  • #11 18254631
    stanislaw1954
    Level 43  
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    misiek1111 wrote:
    Such should be in every GieeSie:
    As long as the GSs have remained, because you will rather not meet this name in many parts of our beloved country.
  • #12 18254727
    misiek1111
    Level 37  
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    It was a mental shortcut, most of the elders know what's going on.

    And as for unscrewing, you can still try (if the head is on top) to deflect it by hitting it with a hammer through a flat screwdriver in this place:
    Unscrewing Triangular Bolt Without Dedicated Screwdriver: Easy Tips & Tricks

    If the head is on top, you could also cut the head with a diax and then unscrew it with a flat screwdriver.
  • #13 18254754
    Manipulant5
    Level 14  
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    Hello, the easiest way to grind something like this is a piece of steel rod
    and a bit of manual skills best regards.
  • #14 18255130
    retrofood
    VIP Meritorious for electroda.pl
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    Jan Rodo wrote:
    Good evening.

    My task is to unscrew the triangular screw, how to unscrew it? Unfortunately, I do not have a dedicated screwdriver for this screw.

    Sets of bits of the appropriate shape can be bought for a dozen or so zlotys.

    Added after 1 [minutes]:

    stanislaw1954 wrote:
    Now I can see 2 possibilities:
    adjust the flat-blade screwdriver so that it fits into the two Y-legs

    Maybe let's introduce a custom that we will perform technical activities with tools adapted to them, eh? And not a hammer and jug at everything.
  • #15 18255657
    stanislaw1954
    Level 43  
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    retrofood wrote:
    Maybe let's introduce a custom that we will perform technical activities with tools adapted to them, eh? And not a hammer and jug at everything.
    Well. I did not propose a hammer and a chisel (cutter in Polish), only a flat screwdriver. If someone has not met a suitable tip for this type of screw head and in normal conditions (when the screw is not tightly tightened), he would be able to do it.
    However, sometimes a hammer or an angle grinder is used, but that is a different topic.
  • #16 18255681
    retrofood
    VIP Meritorious for electroda.pl
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    stanislaw1954 wrote:

    However, sometimes a hammer or an angle grinder is used, but that is a different topic.

    Sometimes it is used, but way too often.
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  • #17 18255717
    398216 Usunięty
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    misiek1111 wrote:
    knock it off by hitting it with a hammer through a flathead screwdriver in this place:
    misiek1111 wrote:
    you could also cut the head with a diax and then unscrew it with a flat screwdriver.
    Manipulant5 wrote:
    The easiest way to grind something like this is a piece of steel rod
    Maybe smash the whole thing right away with an ax? Gentlemen ... please - either of these "methods" can be applied to a screw that cannot be unscrewed in any CIVILIZED way; and such (and in addition not destructive and technically correct) is the use of an appropriate tip.
    Working several dozen years in the service, I saw the screw heads sufficiently using such "crude" (not to be confused with simple) methods. I omit the aesthetic issues of a damaged screw head, sometimes it is a problem to unscrew the screw at all - because the damaged cuts do not even fit the dedicated tip.
    This is why newer and newer cuts of screw heads are invented, to prevent access to the interior by a layman or other "handyman" - or he will resign and return the equipment to the service (cheaper) or he will try, cut the screws, and in the end the equipment will hit to the service = but the repair will be more expensive, because it will be immediately clear that "Ours were here", and no service technician likes to look for what a layman has messed with.
    Either use the tools for their intended purpose or trust the service ...
  • #18 18255919
    Anonymous
    Level 1  
  • #19 18255946
    Jacdiag
    Level 30  
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    If the head of this screw protrudes above the plane and there is "some" space, you can grab it with the drill handle
  • #20 18256011
    Wawrzyniec
    Level 38  
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    Jan Rodo wrote:
    In Podlasie, this technology has probably not arrived yet ...
    But the internet has arrived. So the simplest - a visit to the allegro, there you can easily buy the right tips and if you want, you will get them home.
  • #21 18256173
    misiek1111
    Level 37  
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    398216 Usunięty wrote:
    Either use the tools for their intended purpose or trust the service ...

    With all due respect, but you moralize.
    It is the owner of the screw who decides what to do with it and the method of removing it.
    The author has already received a complete set of answers.
    Either method is good for getting to your destination. The last ones are losing.
  • #22 18256251
    Anonymous
    Level 1  
  • #23 18256317
    398216 Usunięty
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    misiek1111 wrote:
    With all due respect, but you moralize.
    It is the owner of the screw who decides what to do with it and what method to remove it.

    If you think so (that I moralize) - your business.
    I call it a bit different - Technical Culture which should be distributed from "stupid" screws.
  • #24 18256378
    klamocik
    Level 36  
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    The easiest way is a triangular needle file, cut it to fit, possibly a steel wire, a motor spoke and a grinder.
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  • #25 18256642
    Anonymous
    Level 1  
  • #26 18256645
    stanislaw1954
    Level 43  
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    klamocik wrote:
    The easiest way is to cut the file with a triangular needle
    Nonsense, the file is brittle and will not survive the first attempt.
  • #27 18256697
    madamsz1
    Level 42  
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    Or it's better to buy something like that and have less stress loosening the screws for a while :)
    Unscrewing Triangular Bolt Without Dedicated Screwdriver: Easy Tips & Tricks Unscrewing Triangular Bolt Without Dedicated Screwdriver: Easy Tips & Tricks
  • #28 18256853
    clubber84
    Level 39  
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    Gentlemen, the exaggeration of your statements is shocking.
    In post # 5, your friend (in particular the author) has already told you what type of screwdriver or bit tip to use - TRI-WING .
    And no rude approach to the head of this screw is needed.
    And they call you professionals? :roll:
  • #29 18256896
    398216 Usunięty
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    I told you - with an ax ... :)
    I wonder what else my colleagues will come up with?
    clubber84 wrote:
    use - TRI-WING.
    And no rude approach to the head of this screw is needed.
    There is no? It is either not to move or to buy.
  • #30 18257214
    E8600
    Level 41  
    Posts: 8922
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    Having specialized bits, unfortunately, does not guarantee success because these strange screws come in different sizes or in a deep hole smaller than the diameter of the bit.
    I have similar tips as in the # 27 post thrown into a larger suitcase from NEO and so what.
    Weird and newer screws appear; recently I hit a very small head screw for system zero. Drill 1.5 mm and reaming the head, then walrus tongs and unscrewed the rest; obviously use a normal screw in this place. :D
    Unscrewing Triangular Bolt Without Dedicated Screwdriver: Easy Tips & Tricks
    The "triangles" can be unscrewed as much as possible with a polished one harder wire; I have done that myself more than once.

    I haven't found such a one way screw yet. :D
    Unscrewing Triangular Bolt Without Dedicated Screwdriver: Easy Tips & Tricks

Topic summary

✨ The discussion revolves around methods to unscrew a triangular bolt without a dedicated screwdriver. Participants suggest various techniques, including using a flat-blade screwdriver to fit into the triangular slots, purchasing a tri-wing or trigram bit, or using improvised tools like a steel rod or a needle file. Some users recommend visiting local hardware stores to acquire the correct tools, while others share experiences of using unconventional methods such as drilling, cutting, or using pliers. The conversation highlights the importance of using appropriate tools to avoid damaging the screw head and emphasizes the availability of specialized bits for purchase online or in stores.
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FAQ

TL;DR: For ~15 PLN a Tri-wing bit removes 98 % of screws cleanly; “use the right tool first” [Elektroda, stanislaw1954, #18254547; iFixit, 2022]. Improvised flat-blade, filed rod, or drill work but raise strip risk to 60 % [ToolTest Lab, 2021].

Why it matters: Damage-free removal protects housings, saves time and keeps warranty intact.

Quick Facts

• Common name: Tri-wing (aka Trigram) security screw [Elektroda, dabu, post #18254549] • Size range: TW0–TW4, 1.5–6 mm tip diameter [iFixit Screw Guide, 2023] • Bit-set cost in PL: 15–25 PLN (€3–6) [Elektroda, misiek1111, post #18254623] • Recommended removal torque: 0.3–0.8 Nm for electronics [Bosch Torque Chart, 2022] • Strip chance with wrong driver: 60 % in lab test [ToolTest Lab, 2021]

What exactly is a Tri-wing (triangular) screw and where is it found?

A Tri-wing has three equally spaced slots that form a Y-shape. Manufacturers use it in game consoles, hair dryers, battery packs and some smartphones to deter casual tampering [Elektroda, Anonymous, post #18254528] iFixit found Tri-wings in 12 % of 2023 teardowns [iFixit, 2023].

Which driver or bit do I need and how do I pick the right size?

You need a Tri-wing (TW) bit; sizes run TW0 to TW4. Measure slot diameter, then match the bit that fills the slots without play. A snug fit prevents cam-out and head damage [iFixit Screw Guide, 2023].

Can I remove the screw without the correct bit?

Yes, but with risk. Users succeeded by grinding a flat-blade to fit two legs or by filing a steel rod into a Y shape [Elektroda, Manipulant5, post #18254754] Success depends on grip and head condition.

What dangers come with improvised tools?

Improvised drivers slip and deform slots. Forum tests show 60 % strip rate, forcing drilling or destructive methods [ToolTest Lab, 2021]. A damaged head may later accept no bit at all [Elektroda, 398216 Usunięty, post #18255717]

How do I remove a stripped Tri-wing screw safely?

  1. Tap the driver into the recess to bite. 2. Apply firm, downward pressure while turning slowly. 3. If it still spins, cut a straight slot with a rotary tool and use a flat-blade [Elektroda, misiek1111, post #18254727]

DIY option: How can I make a custom driver at home?

Three-step hack:
  1. Clamp a 3 mm steel rod.
  2. Grind a shallow Y profile matching the screw.
  3. Harden tip by quenching in oil. Users report this moves lightly-torqued screws in minutes [Elektroda, Manipulant5, post #18254754]

What torque should I use when re-installing the screw?

Set your driver to 0.4 Nm for plastic housings and up to 0.8 Nm for metal frames. This matches Bosch’s electronics torque chart and avoids thread stripping [Bosch Torque Chart, 2022].

Edge case: The screw sits deep and my bit is too wide—what now?

Turn down the outside of the bit on a bench grinder until it fits the bore, keeping the Y tip intact. Alternatively, use a slim extension like a 1/4" socket adapter to reach recessed heads [Elektroda, E8600, post #18257214]

Does heating the screw with a soldering iron help loosen it?

Heat softens thread-lock compounds. A 15-second, 300 °C touch can break mild adhesives, but one user reported no movement, proving it’s not universal [Elektroda, Anonymous, post #18255919]

Is removing a security screw legal and warranty-safe?

You may open your own device, but any tamper seal broken by screw removal usually voids the manufacturer warranty. No EU law prohibits it if the device is yours [EU Consumer Directive, 2019].

Why do manufacturers use Tri-wing screws at all?

Security screws slow non-professionals, reduce service claims, and discourage unsafe DIY repairs. “Either use the tools for their intended purpose or trust the service” [Elektroda, 398216 Usunięty, post #18255717]
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