What kind of screw is this?

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https://discuss.tchncs.de/pictrs/image/7d642c51-7b7d-4307-8dc7-f4257836cad0.jpeg

What kind of screw is this?

EDIT: I believe I found the answer, it's something turned by this: https://ctatools.com/products/5065

Found some trash on the street that i'd like to take apart, but this screw is in my way.

It's like a hex bolt, but with 5 sides, and rounded (a bit like flower petals).

Here's another picture from the top:

I tried turning it with various tools (hard to get pliars in unfortunately), no success so far. The material is very soft, which doesn't help..

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14

I use the iFixit Pro kits personally and professionally: Would recommend.

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Edit again: I was wrong. TIL about EPR Torx. Just search that and you should find the right set.

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OP

I can only find pictures of 6-lobed Gamebit screws

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That is some variety or another of a “torx star” head. They vary in size and are listed as TS-10, TS-15, etc. your best bet would be searching torx star and buying a set of bits to try out various sizes.

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19

And it's an inverted torx (with 5 points) as usually the screw driver is male and the screw head is female - I think that's the right nomanclature.

https://germantoolblog.com/2017/06/01/torx-and-its-many-variations/

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Oh ffs I didn’t notice it was inverted from the pics. Good catch. Someone *really* doesn’t want you to open that shit OP.

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OP

true, looking at second pic it's very hard to make out. I tried to capture it on the first picture, but it's not that good

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OP

yeah, it is inverted (or "external" torx according to your link). They also made sure to sink the screws into a whole where no pliars will fit...

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Idk but buy a safety screw kit

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4

It's hard to tell from the pic, but while that may be epr torx, it also looks like a pentalobe.

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Hard to say without a scale reference, but if it's small, I very small might very will be a proprietary fastener for higher security applications. If it's a Tesla battery pack, then the epr 5-point torx is a good candidate. If it's an apple device then searching pentalobe might get you farther.

What on earth is it? Pics? Ruler next to it?

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