What kind of screw is this? (discuss.tchncs.de)

submitted 10 months ago* (last edited 10 months ago) by [email protected] to c/[email protected]

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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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[-] [email protected] 18 points 10 months ago

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.

[-] [email protected] 27 points 10 months ago

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/

[-] [email protected] 16 points 10 months ago

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.

[-] [email protected] 6 points 10 months ago

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

[-] [email protected] 7 points 10 months ago

I think I found it, it's this kind: https://ctatools.com/products/5065x12

[-] [email protected] 5 points 10 months ago

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...

[-] [email protected] 13 points 10 months ago* (last edited 10 months ago)

Pick up the IFix it screw set, it has socket style bits that will fit that, plus most of the goofy screws in electronics, I'm a broadcast engineer and that set is awesome for work and hobby electronics work.

Edit: I just looked at their site and seems like they've grown a bit in the last ten years, they have many sets but here's a link, they definitely have what you need https://www.ifixit.com/Tools

[-] [email protected] 5 points 10 months ago

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

[-] [email protected] 11 points 10 months ago* (last edited 10 months ago)

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