Author Topic: Fingers on buzzers - who can name this screw head?  (Read 849 times)

road-runner

  • Currently in Slovakia
Fingers on buzzers - who can name this screw head?
« on: 05 May, 2021, 06:16:01 pm »


These are large screws in a door frame. My ordinary crosshead and Spax (T20) screwdriver bits are so small by comparison they just spin in the centre of this 6 point star screwhead. What sort of bit should I be looking to buy to be able to undo these screws?

Don't be confused by what looks like a spigot as it is just light reflecting off the base of the hole.

Gattopardo

  • Lord of the sith
  • Overseaing the building of the death star
Re: Fingers on buzzers - who can name this screw head?
« Reply #1 on: 05 May, 2021, 06:22:48 pm »
By spax do you mean torx or star

Kim

  • Timelord
Re: Fingers on buzzers - who can name this screw head?
« Reply #2 on: 05 May, 2021, 06:25:20 pm »
I does look like Torx.  Sort of thing you'd find in a security bit set.
Careful, Kim. Your sarcasm's showing...

Re: Fingers on buzzers - who can name this screw head?
« Reply #3 on: 05 May, 2021, 06:27:05 pm »
If a T20 is too small perhaps T25 or T30.

Cudzoziemiec

  • Eating all the pies and drinking all the tea.
Re: Fingers on buzzers - who can name this screw head?
« Reply #4 on: 05 May, 2021, 06:27:16 pm »
I think Torx and Spax are brand names with different threads but same heads.
Riding a bike through a city is like navigating the collective neural pathways of a vast global mind.

road-runner

  • Currently in Slovakia
Re: Fingers on buzzers - who can name this screw head?
« Reply #5 on: 05 May, 2021, 06:34:03 pm »
Sorry, it is a TX-20 Torx bit I have. I looked at the screw box which is Spax. I was hoping to not have to guess at what size to buy as I cannot check before I buy online. I am not yet vaccinated and so cannot go physical shopping here just yet.

Tim Hall

  • Victoria is my queen
Re: Fingers on buzzers - who can name this screw head?
« Reply #6 on: 05 May, 2021, 06:36:04 pm »
What size hex key fits in there?  Use that as a gauge for the correct size Torx bit.
There are two ways you can get exercise out of a bicycle: you can
"overhaul" it, or you can ride it.  (Jerome K Jerome)

Kim

  • Timelord
Re: Fingers on buzzers - who can name this screw head?
« Reply #7 on: 05 May, 2021, 06:37:36 pm »
https://en.wikipedia.org/wiki/Torx has point to point measurements...
Careful, Kim. Your sarcasm's showing...

road-runner

  • Currently in Slovakia
Re: Fingers on buzzers - who can name this screw head?
« Reply #8 on: 05 May, 2021, 06:38:45 pm »
What size hex key fits in there?

That's a clever question, Tim. I'll go and measure it later this evening.

road-runner

  • Currently in Slovakia
Re: Fingers on buzzers - who can name this screw head?
« Reply #9 on: 05 May, 2021, 06:39:58 pm »
https://en.wikipedia.org/wiki/Torx has point to point measurements...

Something else for me to measure. Thanks. I will report back later.

Jaded

  • The Codfather
  • Formerly known as Jaded
Re: Fingers on buzzers - who can name this screw head?
« Reply #10 on: 05 May, 2021, 06:46:52 pm »
Spax is a screw brand name. I have a large box of Spax screws that have a cross thread head of some kind.
If you don't like your democracy, vote against it.

Re: Fingers on buzzers - who can name this screw head?
« Reply #11 on: 05 May, 2021, 06:50:42 pm »
These screws: https://timberfixings.com/Washer-Flange-Head-Decorative-Head-Screws-c24848065 seem to jump from T25 to T40, but I suppose that might vary from brand to brand.

road-runner

  • Currently in Slovakia
Re: Fingers on buzzers - who can name this screw head?
« Reply #12 on: 05 May, 2021, 08:21:20 pm »
Point to point measures 4mm to my eyes with help from a ruler. A Torx T-20 drive, which I have, is 3.95mm according to Wikipedia but mine is way too small for these screws.



A 4mm allen key fitted so perfectly that I used it to remove all 18 screws. Now I don't need to buy a Torx bit.



WK 070. Not quite sure I needed to know that.

Re: Fingers on buzzers - who can name this screw head?
« Reply #13 on: 05 May, 2021, 08:41:18 pm »
It's 240V, 50 Hz.

Wombat

  • Is it supposed to hurt this much?
Re: Fingers on buzzers - who can name this screw head?
« Reply #14 on: 06 May, 2021, 03:03:37 pm »
Seriously, do you not have a set of Torx bits?  They are cheap enough, and surely part of the everyday equipment of any householder or fixer of things.  If in doubt, assume T20.
Wombat

Re: Fingers on buzzers - who can name this screw head?
« Reply #15 on: 06 May, 2021, 03:10:00 pm »
Twenty quid:

Bahco bit set

Everyone needs something like this. Buy more expensive bits for the ones you use all the time (PZ2 for example) or need to be used with an impact driver but the Bahco ones are fine for general use. Saves hours of farting around when you come upon a less common fastener.

I think you'll find it's a bit more complicated than that.

Wombat

  • Is it supposed to hurt this much?
Re: Fingers on buzzers - who can name this screw head?
« Reply #16 on: 06 May, 2021, 03:17:00 pm »
I got a cheapo ten quid set for carting about to places where unknown fasteners might be encountered.  I never, ever use Philips or pozi in anything I do at home, I hate the things.  Torx exclusively for building type stuff, and for model engineering, hex socket head (for allen keys) as Torx seem to be unavailable in tiny sizes such as M1.6.  Obviously at home, or when working on railway stuff, I have decent quality bits, but the ten quid set is a useful standby.
Wombat

Re: Fingers on buzzers - who can name this screw head?
« Reply #17 on: 06 May, 2021, 03:29:17 pm »
I have given up on the really really cheap sets. Finally dumped a biscuit tin full of assorted bits last year. I decided that life is too short for screwing up fasteners with cheap bits. So I now have Wiha or Wera sets with Bahco sets for for unusual fasteners or chuck it in the car just in case use.
I think you'll find it's a bit more complicated than that.

Re: Fingers on buzzers - who can name this screw head?
« Reply #18 on: 06 May, 2021, 04:30:05 pm »
Twenty quid:
...

Everyone needs something like this. Buy more expensive bits for the ones you use all the time (PZ2 for example) or need to be used with an impact driver but the Bahco ones are fine for general use. Saves hours of farting around when you come upon a less common fastener.


Every time I buy something like that I find a screw that I haven't come across before.  Looking at that set I can see a few bits I have used that are missing.      I also have a large number of cases such as that but where the commonly required bit is nothing but a missing empty space as the bit in question has been worn out.

Re: Fingers on buzzers - who can name this screw head?
« Reply #19 on: 06 May, 2021, 04:42:56 pm »
Twenty quid:
...

Everyone needs something like this. Buy more expensive bits for the ones you use all the time (PZ2 for example) or need to be used with an impact driver but the Bahco ones are fine for general use. Saves hours of farting around when you come upon a less common fastener.


Every time I buy something like that I find a screw that I haven't come across before.  Looking at that set I can see a few bits I have used that are missing.      I also have a large number of cases such as that but where the commonly required bit is nothing but a missing empty space as the bit in question has been worn out.

That's why I buy boxes of 20 PZ2 and PH2 :)
I think you'll find it's a bit more complicated than that.

road-runner

  • Currently in Slovakia
Re: Fingers on buzzers - who can name this screw head?
« Reply #20 on: 14 May, 2021, 10:49:28 pm »
Seriously, do you not have a set of Torx bits?

I do now. A 4mm allen key turns out to be the same size as T30.