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aus+uk / uk.d-i-y / Re: Tap for M3.5 Screws

SubjectAuthor
* Tap for M3.5 ScrewsJeff Gaines
+* Re: Tap for M3.5 ScrewsMartin Brown
|`* Re: Tap for M3.5 Screwscharles
| `* Re: Tap for M3.5 ScrewsMartin Brown
|  `* Re: Tap for M3.5 ScrewsARW
|   `- Re: Tap for M3.5 ScrewsJohn Miller
+* Re: Tap for M3.5 Screwsnews.eternal-september.org
|`* Re: Tap for M3.5 ScrewsJock
| `* Re: Tap for M3.5 Screwsjon
|  `- Re: Tap for M3.5 ScrewsThe Natural Philosopher
+* Re: Tap for M3.5 ScrewsClive Arthur
|`- Re: Tap for M3.5 ScrewsMartin Brown
+* Re: Tap for M3.5 Screwsalan_m
|`* Re: Tap for M3.5 ScrewsAndy Burns
| `- Re: Tap for M3.5 ScrewsMartin Brown
+- Re: Tap for M3.5 Screwswhisky-dave
+- Re: Tap for M3.5 ScrewsDavid Wade
+- Re: Tap for M3.5 ScrewsAnimal
+* Re: Tap for M3.5 ScrewsJeff Gaines
|+- Re: Tap for M3.5 ScrewsAnimal
|`* Re: Tap for M3.5 ScrewsDave Plowman (News)
| `- Re: Tap for M3.5 ScrewsJeff Gaines
+- Re: Tap for M3.5 ScrewsTricky Dicky
+* Re: Tap for M3.5 Screwswasbit
|`- Re: Tap for M3.5 Screwsalan_m
`* Re: Tap for M3.5 Screwsalan_m
 +* Re: Tap for M3.5 ScrewsMartin Brown
 |`- Re: Tap for M3.5 ScrewsAndy Burns
 `* Re: Tap for M3.5 ScrewsDave Plowman (News)
  +* Re: Tap for M3.5 Screwsalan_m
  |`- Re: Tap for M3.5 ScrewsDave Plowman (News)
  +* Re: Tap for M3.5 ScrewsARW
  |+- Re: Tap for M3.5 ScrewsJeff Gaines
  |`- Re: Tap for M3.5 ScrewsDave Plowman (News)
  +* Re: Tap for M3.5 ScrewsPaul
  |+- Re: Tap for M3.5 ScrewsDavid Paste
  |`* Re: Tap for M3.5 ScrewsVir Campestris
  | +* Re: Tap for M3.5 Screwsalan_m
  | |`- Re: Tap for M3.5 ScrewsVir Campestris
  | `- Re: Tap for M3.5 ScrewsPaul
  `* Re: Tap for M3.5 ScrewsAdam Funk
   `* Re: Tap for M3.5 ScrewsDave Plowman (News)
    `* Re: Tap for M3.5 ScrewsAdam Funk
     `* Re: Tap for M3.5 ScrewsDave Plowman (News)
      +- Re: Tap for M3.5 Screwsalan_m
      `* Re: Tap for M3.5 ScrewsAdam Funk
       `* Re: Tap for M3.5 ScrewsDave Plowman (News)
        `- Re: Tap for M3.5 ScrewsAdam Funk

Pages:12
Re: Tap for M3.5 Screws

<t4grhn$vcl$3@dont-email.me>

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Path: i2pn2.org!i2pn.org!eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: tnp...@invalid.invalid (The Natural Philosopher)
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
Date: Fri, 29 Apr 2022 15:08:55 +0100
Organization: A little, after lunch
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 by: The Natural Philosop - Fri, 29 Apr 2022 14:08 UTC

On 29/04/2022 13:21, jon wrote:
> On Thu, 28 Apr 2022 20:41:47 +1000, Jock wrote:
>
>> On Thu, 28 Apr 2022 20:27:14 +1000, news.eternal-september.org
>> <phister@inbox.com> wrote:
>>
>>> The most obvious way of differentiating between a bolt and a screw is
>>> that a bolt is not usually threaded all the way along its shank as it
>>> has a plain portion.
>>
>>> A screw, however, is threaded fully to the head.
>>
>> That's bullshit with most wood screws.
>
> Don't be silly.
He cant help it.

--
“There are two ways to be fooled. One is to believe what isn’t true; the
other is to refuse to believe what is true.”

—Soren Kierkegaard

Re: Tap for M3.5 Screws

<59e0c69ab1dave@davenoise.co.uk>

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From: dav...@davenoise.co.uk (Dave Plowman (News))
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
Date: Fri, 29 Apr 2022 15:40:14 +0100
Organization: None
Message-ID: <59e0c69ab1dave@davenoise.co.uk>
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 by: Dave Plowman (News) - Fri, 29 Apr 2022 14:40 UTC

In article <xn0nh5noc1nyvhh00b@news.individual.net>,
Jeff Gaines <jgaines_newsid@yahoo.co.uk> wrote:
> On 28/04/2022 in message <xn0nh5hza1gaq2u008@news.individual.net> Jeff
> Gaines wrote:

> >
> >Working my way round my new (to me) bungalow I am checking light switches
> >and wall sockets. They have all been fitted with 30mm screws (did they
> >used to be called bolts?) which makes them difficult to refit. I am going
> >to get some 40mm screws but I'd like a 3.5mm tap with handle to ensure the
> >threads in the sockets are OK. The bungalow as built in 1983, might the
> >sockets have imperial threads from then? Some of them are right pigs to
> >screw in.

> Many thanks for all the replies :-)

> I have gone for a thread-cleaning screwdriver and a bag of mixed size M3
> screws, I can use the smallest size feasible without standing on my head
> with a torch in my mouth!

> I certainly remember a thread before M3. Whether it was imperial or not I
> don't know (my dad referred to it as such) but I remember if you did it
> carefully with a decent screwdriver you could "convert" it to metric by
> driving a bolt in.

The electrical size is M3.5. not M3. And the correct screws generally have
raised heads and are chrome plated, or bright zinc. Commonly only two
lengths - switch and socket. With long available for use over tiles, etc.

--
*Am I ambivalent? Well, yes and no.

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

Re: Tap for M3.5 Screws

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From: dav...@davenoise.co.uk (Dave Plowman (News))
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
Date: Fri, 29 Apr 2022 15:42:09 +0100
Organization: None
Message-ID: <59e0c6c777dave@davenoise.co.uk>
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 by: Dave Plowman (News) - Fri, 29 Apr 2022 14:42 UTC

In article <jd1qalF7p1nU1@mid.individual.net>,
alan_m <junk@admac.myzen.co.uk> wrote:

> Why are 99.9% of the M3.5 supplied with socket and switches slotted
> headed rather a cross head? I've only purchased one (no-name) brand
> with cross head screws.

Because a slot head - neatly lined up to vertical - looks so much better
than cross head.

--
*Thank you. We're all refreshed and challenged by your unique point of view

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

Re: Tap for M3.5 Screws

<xn0nh74zw373rf300h@news.individual.net>

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From: jgaines_...@yahoo.co.uk (Jeff Gaines)
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
Date: 29 Apr 2022 15:16:26 GMT
Lines: 40
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 by: Jeff Gaines - Fri, 29 Apr 2022 15:16 UTC

On 29/04/2022 in message <59e0c69ab1dave@davenoise.co.uk> Dave Plowman
(News) wrote:

>In article <xn0nh5noc1nyvhh00b@news.individual.net>,
> Jeff Gaines <jgaines_newsid@yahoo.co.uk> wrote:
>>On 28/04/2022 in message <xn0nh5hza1gaq2u008@news.individual.net> Jeff
>>Gaines wrote:
>
>>>
>>>Working my way round my new (to me) bungalow I am checking light switches
>>>and wall sockets. They have all been fitted with 30mm screws (did they
>>>used to be called bolts?) which makes them difficult to refit. I am going
>>>to get some 40mm screws but I'd like a 3.5mm tap with handle to ensure
>>>the
>>>threads in the sockets are OK. The bungalow as built in 1983, might the
>>>sockets have imperial threads from then? Some of them are right pigs to
>>>screw in.
>
>>Many thanks for all the replies :-)
>
>>I have gone for a thread-cleaning screwdriver and a bag of mixed size M3
>>screws, I can use the smallest size feasible without standing on my head
>>with a torch in my mouth!
>
>>I certainly remember a thread before M3. Whether it was imperial or not I
>>don't know (my dad referred to it as such) but I remember if you did it
>>carefully with a decent screwdriver you could "convert" it to metric by
>>driving a bolt in.
>
>The electrical size is M3.5. not M3. And the correct screws generally have
>raised heads and are chrome plated, or bright zinc. Commonly only two
>lengths - switch and socket. With long available for use over tiles, etc.

Yes, sorry typo should be M3.5. I have just received an order of  25, 35,
40, 50, 60 and 75 mm lengths from eBay, 20 of each, that should help!

--
Jeff Gaines Dorset UK
The true meaning of life is to plant trees under whose shade you do not
expect to sit.

Re: Tap for M3.5 Screws

<jd2ig3Fcb2bU1@mid.individual.net>

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From: jun...@admac.myzen.co.uk (alan_m)
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
Date: Fri, 29 Apr 2022 17:36:20 +0100
Organization: At Home
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<jd1qalF7p1nU1@mid.individual.net> <59e0c6c777dave@davenoise.co.uk>
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 by: alan_m - Fri, 29 Apr 2022 16:36 UTC

On 29/04/2022 15:42, Dave Plowman (News) wrote:
> In article <jd1qalF7p1nU1@mid.individual.net>,
> alan_m <junk@admac.myzen.co.uk> wrote:
>
>> Why are 99.9% of the M3.5 supplied with socket and switches slotted
>> headed rather a cross head? I've only purchased one (no-name) brand
>> with cross head screws.
>
> Because a slot head - neatly lined up to vertical - looks so much better
> than cross head.
>

But where that used to be important for assembly they use nail guns
these days

--
mailto : news {at} admac {dot} myzen {dot} co {dot} uk

Re: Tap for M3.5 Screws

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From: adamwads...@blueyonder.co.uk (ARW)
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
Date: Fri, 29 Apr 2022 20:44:00 +0100
Organization: A noiseless patient Spider
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 by: ARW - Fri, 29 Apr 2022 19:44 UTC

On 29/04/2022 15:42, Dave Plowman (News) wrote:
> In article <jd1qalF7p1nU1@mid.individual.net>,
> alan_m <junk@admac.myzen.co.uk> wrote:
>
>> Why are 99.9% of the M3.5 supplied with socket and switches slotted
>> headed rather a cross head? I've only purchased one (no-name) brand
>> with cross head screws.
>
> Because a slot head - neatly lined up to vertical - looks so much better
> than cross head.
>

Horizontal in Yorkshire:-)

Actually you can leave them in any direction. No one looks at them and
has a wank.

Re: Tap for M3.5 Screws

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From: nos...@needed.invalid (Paul)
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
Date: Sat, 30 Apr 2022 02:12:04 -0400
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 by: Paul - Sat, 30 Apr 2022 06:12 UTC

On 4/29/2022 10:42 AM, Dave Plowman (News) wrote:
> In article <jd1qalF7p1nU1@mid.individual.net>,
> alan_m <junk@admac.myzen.co.uk> wrote:
>
>> Why are 99.9% of the M3.5 supplied with socket and switches slotted
>> headed rather a cross head? I've only purchased one (no-name) brand
>> with cross head screws.
>
> Because a slot head - neatly lined up to vertical - looks so much better
> than cross head.
>

For a decorative screw, the drive on the head, barely has to work.
The cheapness of the screw, is part of the equation.

But there are screws with better drive characteristics.
The screwdriver doesn't slip out of these.

[Picture]

https://i.postimg.cc/q7tfcwj2/screw.gif

I made a table yesterday, and those screws hold the flange
that holds the leg to the table.

Paul

Re: Tap for M3.5 Screws

<xn0nh87f34646qe00j@news.individual.net>

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From: jgaines_...@yahoo.co.uk (Jeff Gaines)
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
Date: 30 Apr 2022 07:36:32 GMT
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 by: Jeff Gaines - Sat, 30 Apr 2022 07:36 UTC

On 29/04/2022 in message <t4hf60$a47$1@dont-email.me> ARW wrote:

>>Because a slot head - neatly lined up to vertical - looks so much better
>>than cross head.
>>
>
>Horizontal in Yorkshire:-)
>
>Actually you can leave them in any direction. No one looks at them and has
>a wank.

Except in Yorkshire?

--
Jeff Gaines Dorset UK
George Washington was a British subject until well after his 40th birthday.
(Margaret Thatcher, speech at the White House 17 December 1979)

Re: Tap for M3.5 Screws

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From: dav...@davenoise.co.uk (Dave Plowman (News))
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
Date: Sat, 30 Apr 2022 12:41:52 +0100
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 by: Dave Plowman (News) - Sat, 30 Apr 2022 11:41 UTC

In article <jd2ig3Fcb2bU1@mid.individual.net>,
alan_m <junk@admac.myzen.co.uk> wrote:
> On 29/04/2022 15:42, Dave Plowman (News) wrote:
> > In article <jd1qalF7p1nU1@mid.individual.net>,
> > alan_m <junk@admac.myzen.co.uk> wrote:
> >
> >> Why are 99.9% of the M3.5 supplied with socket and switches slotted
> >> headed rather a cross head? I've only purchased one (no-name) brand
> >> with cross head screws.
> >
> > Because a slot head - neatly lined up to vertical - looks so much better
> > than cross head.
> >

> But where that used to be important for assembly they use nail guns
> these days

You're welcome to use a nail gun to fit your sockets if you wish.

--
*Starfishes have no brains *

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

Re: Tap for M3.5 Screws

<59e13a4bb6dave@davenoise.co.uk>

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From: dav...@davenoise.co.uk (Dave Plowman (News))
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
Date: Sat, 30 Apr 2022 12:43:54 +0100
Organization: None
Message-ID: <59e13a4bb6dave@davenoise.co.uk>
References: <xn0nh5hza1gaq2u008@news.individual.net>
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 by: Dave Plowman (News) - Sat, 30 Apr 2022 11:43 UTC

In article <t4hf60$a47$1@dont-email.me>,
ARW <adamwadsworth@blueyonder.co.uk> wrote:
> On 29/04/2022 15:42, Dave Plowman (News) wrote:
> > In article <jd1qalF7p1nU1@mid.individual.net>,
> > alan_m <junk@admac.myzen.co.uk> wrote:
> >
> >> Why are 99.9% of the M3.5 supplied with socket and switches slotted
> >> headed rather a cross head? I've only purchased one (no-name) brand
> >> with cross head screws.
> >
> > Because a slot head - neatly lined up to vertical - looks so much better
> > than cross head.
> >

> Horizontal in Yorkshire:-)

> Actually you can leave them in any direction. No one looks at them and
> has a wank.

Can be useful. If called back for warranty work, you'll know if anyone has
had a go before you. ;-)

--
*A bicycle can't stand alone because it's two tyred.*

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

Re: Tap for M3.5 Screws

<6gvvjixdm1.ln2@news.ducksburg.com>

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From: a240...@ducksburg.com (Adam Funk)
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
Date: Sat, 30 Apr 2022 15:59:50 +0100
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 by: Adam Funk - Sat, 30 Apr 2022 14:59 UTC

On 2022-04-29, Dave Plowman (News) wrote:

> In article <jd1qalF7p1nU1@mid.individual.net>,
> alan_m <junk@admac.myzen.co.uk> wrote:
>
>> Why are 99.9% of the M3.5 supplied with socket and switches slotted
>> headed rather a cross head? I've only purchased one (no-name) brand
>> with cross head screws.
>
> Because a slot head - neatly lined up to vertical - looks so much better
> than cross head.

I tighten them until they feel right but they rarely end up vertical.

Re: Tap for M3.5 Screws

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From: dav...@davenoise.co.uk (Dave Plowman (News))
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
Date: Sat, 30 Apr 2022 16:46:45 +0100
Organization: None
Message-ID: <59e15087a9dave@davenoise.co.uk>
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 by: Dave Plowman (News) - Sat, 30 Apr 2022 15:46 UTC

In article <6gvvjixdm1.ln2@news.ducksburg.com>,
Adam Funk <a24061a@ducksburg.com> wrote:
> On 2022-04-29, Dave Plowman (News) wrote:

> > In article <jd1qalF7p1nU1@mid.individual.net>,
> > alan_m <junk@admac.myzen.co.uk> wrote:
> >
> >> Why are 99.9% of the M3.5 supplied with socket and switches slotted
> >> headed rather a cross head? I've only purchased one (no-name) brand
> >> with cross head screws.
> >
> > Because a slot head - neatly lined up to vertical - looks so much better
> > than cross head.

> I tighten them until they feel right but they rarely end up vertical.

You need a better feel.

--
*Frustration is trying to find your glasses without your glasses.

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

Re: Tap for M3.5 Screws

<fao5kixior.ln2@news.ducksburg.com>

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From: a240...@ducksburg.com (Adam Funk)
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
Date: Mon, 02 May 2022 20:34:07 +0100
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 by: Adam Funk - Mon, 2 May 2022 19:34 UTC

On 2022-04-30, Dave Plowman (News) wrote:

> In article <6gvvjixdm1.ln2@news.ducksburg.com>,
> Adam Funk <a24061a@ducksburg.com> wrote:
>> On 2022-04-29, Dave Plowman (News) wrote:
>
>> > In article <jd1qalF7p1nU1@mid.individual.net>,
>> > alan_m <junk@admac.myzen.co.uk> wrote:
>> >
>> >> Why are 99.9% of the M3.5 supplied with socket and switches slotted
>> >> headed rather a cross head? I've only purchased one (no-name) brand
>> >> with cross head screws.
>> >
>> > Because a slot head - neatly lined up to vertical - looks so much better
>> > than cross head.
>
>> I tighten them until they feel right but they rarely end up vertical.
>
> You need a better feel.

Well, I cracked the nuts out of plastic boxes (just surface-mount, I
think) a few times, so I'm cautious about over-torquing the screws.

Re: Tap for M3.5 Screws

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From: dav...@davenoise.co.uk (Dave Plowman (News))
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
Date: Tue, 03 May 2022 15:19:39 +0100
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 by: Dave Plowman (News) - Tue, 3 May 2022 14:19 UTC

In article <fao5kixior.ln2@news.ducksburg.com>,
Adam Funk <a24061a@ducksburg.com> wrote:
> On 2022-04-30, Dave Plowman (News) wrote:

> > In article <6gvvjixdm1.ln2@news.ducksburg.com>,
> > Adam Funk <a24061a@ducksburg.com> wrote:
> >> On 2022-04-29, Dave Plowman (News) wrote:
> >
> >> > In article <jd1qalF7p1nU1@mid.individual.net>,
> >> > alan_m <junk@admac.myzen.co.uk> wrote:
> >> >
> >> >> Why are 99.9% of the M3.5 supplied with socket and switches slotted
> >> >> headed rather a cross head? I've only purchased one (no-name) brand
> >> >> with cross head screws.
> >> >
> >> > Because a slot head - neatly lined up to vertical - looks so much better
> >> > than cross head.
> >
> >> I tighten them until they feel right but they rarely end up vertical.
> >
> > You need a better feel.

> Well, I cracked the nuts out of plastic boxes (just surface-mount, I
> think) a few times, so I'm cautious about over-torquing the screws.

Just back them off then. They're not like a terminal screw which needs to
be tight.

Although I never use surface mount plastic. Flush metal box type have
quite a bit of flex.

--
*Never miss a good chance to shut up.*

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

Re: Tap for M3.5 Screws

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Subject: Re: Tap for M3.5 Screws
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 by: David Paste - Tue, 3 May 2022 14:42 UTC

On Saturday, 30 April 2022 at 07:12:08 UTC+1, Paul wrote:

> But there are screws with better drive characteristics.
> The screwdriver doesn't slip out of these.
>
> [Picture]
>
> https://i.postimg.cc/q7tfcwj2/screw.gif
>
> I made a table yesterday, and those screws hold the flange
> that holds the leg to the table.
>
> Paul

Robertson head, defacto standard in Canada.

Re: Tap for M3.5 Screws

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From: jun...@admac.myzen.co.uk (alan_m)
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
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 by: alan_m - Tue, 3 May 2022 14:47 UTC

On 03/05/2022 15:19, Dave Plowman (News) wrote:

> Just back them off then. They're not like a terminal screw which needs to
> be tight.
>
> Although I never use surface mount plastic. Flush metal box type have
> quite a bit of flex.
>

Possibly it makes a big difference if you are trying to force half a km
of wire into the back box or if the back box is barely deep enough for
what you are trying to put into it. When I fit a back box into a wall I
always select 35mm deep.

--
mailto : news {at} admac {dot} myzen {dot} co {dot} uk

Re: Tap for M3.5 Screws

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From: a240...@ducksburg.com (Adam Funk)
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
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 by: Adam Funk - Thu, 5 May 2022 14:39 UTC

On 2022-05-03, Dave Plowman (News) wrote:

> In article <fao5kixior.ln2@news.ducksburg.com>,
> Adam Funk <a24061a@ducksburg.com> wrote:
>> On 2022-04-30, Dave Plowman (News) wrote:
>
>> > In article <6gvvjixdm1.ln2@news.ducksburg.com>,
>> > Adam Funk <a24061a@ducksburg.com> wrote:
>> >> On 2022-04-29, Dave Plowman (News) wrote:
>> >
>> >> > In article <jd1qalF7p1nU1@mid.individual.net>,
>> >> > alan_m <junk@admac.myzen.co.uk> wrote:
>> >> >
>> >> >> Why are 99.9% of the M3.5 supplied with socket and switches slotted
>> >> >> headed rather a cross head? I've only purchased one (no-name) brand
>> >> >> with cross head screws.
>> >> >
>> >> > Because a slot head - neatly lined up to vertical - looks so much better
>> >> > than cross head.
>> >
>> >> I tighten them until they feel right but they rarely end up vertical.
>> >
>> > You need a better feel.
>
>> Well, I cracked the nuts out of plastic boxes (just surface-mount, I
>> think) a few times, so I'm cautious about over-torquing the screws.
>
> Just back them off then. They're not like a terminal screw which needs to
> be tight.
>
> Although I never use surface mount plastic. Flush metal box type have
> quite a bit of flex.

True.

TBH I don't think I've ever looked at a switch or socket and noticed
the screw head orientation.

Re: Tap for M3.5 Screws

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From: dav...@davenoise.co.uk (Dave Plowman (News))
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
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 by: Dave Plowman (News) - Thu, 5 May 2022 14:58 UTC

In article <s64dkixkg8.ln2@news.ducksburg.com>,
Adam Funk <a24061a@ducksburg.com> wrote:
> On 2022-05-03, Dave Plowman (News) wrote:

> > In article <fao5kixior.ln2@news.ducksburg.com>,
> > Adam Funk <a24061a@ducksburg.com> wrote:
> >> On 2022-04-30, Dave Plowman (News) wrote:
> >
> >> > In article <6gvvjixdm1.ln2@news.ducksburg.com>,
> >> > Adam Funk <a24061a@ducksburg.com> wrote:
> >> >> On 2022-04-29, Dave Plowman (News) wrote:
> >> >
> >> >> > In article <jd1qalF7p1nU1@mid.individual.net>,
> >> >> > alan_m <junk@admac.myzen.co.uk> wrote:
> >> >> >
> >> >> >> Why are 99.9% of the M3.5 supplied with socket and switches slotted
> >> >> >> headed rather a cross head? I've only purchased one (no-name) brand
> >> >> >> with cross head screws.
> >> >> >
> >> >> > Because a slot head - neatly lined up to vertical - looks so much better
> >> >> > than cross head.
> >> >
> >> >> I tighten them until they feel right but they rarely end up vertical.
> >> >
> >> > You need a better feel.
> >
> >> Well, I cracked the nuts out of plastic boxes (just surface-mount, I
> >> think) a few times, so I'm cautious about over-torquing the screws.
> >
> > Just back them off then. They're not like a terminal screw which needs to
> > be tight.
> >
> > Although I never use surface mount plastic. Flush metal box type have
> > quite a bit of flex.

> True.

> TBH I don't think I've ever looked at a switch or socket and noticed
> the screw head orientation.

Those fixing screws generally have a raised head in a bright finish. To
make them attractive as possible? If looks don't matter a plain CSK would
be cheaper? And do the job perfectly?

--
*Men are from Earth, women are from Earth. Deal with it.

Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.

Re: Tap for M3.5 Screws

<iv5dkixmk9.ln2@news.ducksburg.com>

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From: a240...@ducksburg.com (Adam Funk)
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
Date: Thu, 05 May 2022 16:10:10 +0100
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 by: Adam Funk - Thu, 5 May 2022 15:10 UTC

On 2022-05-05, Dave Plowman (News) wrote:

> In article <s64dkixkg8.ln2@news.ducksburg.com>,
> Adam Funk <a24061a@ducksburg.com> wrote:
>> On 2022-05-03, Dave Plowman (News) wrote:
>
>> > In article <fao5kixior.ln2@news.ducksburg.com>,
>> > Adam Funk <a24061a@ducksburg.com> wrote:
>> >> On 2022-04-30, Dave Plowman (News) wrote:
>> >
>> >> > In article <6gvvjixdm1.ln2@news.ducksburg.com>,
>> >> > Adam Funk <a24061a@ducksburg.com> wrote:
>> >> >> On 2022-04-29, Dave Plowman (News) wrote:
>> >> >
>> >> >> > In article <jd1qalF7p1nU1@mid.individual.net>,
>> >> >> > alan_m <junk@admac.myzen.co.uk> wrote:
>> >> >> >
>> >> >> >> Why are 99.9% of the M3.5 supplied with socket and switches slotted
>> >> >> >> headed rather a cross head? I've only purchased one (no-name) brand
>> >> >> >> with cross head screws.
>> >> >> >
>> >> >> > Because a slot head - neatly lined up to vertical - looks so much better
>> >> >> > than cross head.
>> >> >
>> >> >> I tighten them until they feel right but they rarely end up vertical.
>> >> >
>> >> > You need a better feel.
>> >
>> >> Well, I cracked the nuts out of plastic boxes (just surface-mount, I
>> >> think) a few times, so I'm cautious about over-torquing the screws.
>> >
>> > Just back them off then. They're not like a terminal screw which needs to
>> > be tight.
>> >
>> > Although I never use surface mount plastic. Flush metal box type have
>> > quite a bit of flex.
>
>> True.
>
>> TBH I don't think I've ever looked at a switch or socket and noticed
>> the screw head orientation.
>
> Those fixing screws generally have a raised head in a bright finish. To
> make them attractive as possible? If looks don't matter a plain CSK would
> be cheaper? And do the job perfectly?

Fair enough --- I think this is just a matter of personal taste, and
you're more tasteful than I am.

Re: Tap for M3.5 Screws

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From: vir.camp...@invalid.invalid (Vir Campestris)
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
Date: Fri, 6 May 2022 21:04:10 +0100
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 by: Vir Campestris - Fri, 6 May 2022 20:04 UTC

On 30/04/2022 07:12, Paul wrote:
>>
>
> For a decorative screw, the drive on the head, barely has to work.
> The cheapness of the screw, is part of the equation.
>
> But there are screws with better drive characteristics.
> The screwdriver doesn't slip out of these.
>
>    [Picture]
>
> https://i.postimg.cc/q7tfcwj2/screw.gif
>
> I made a table yesterday, and those screws hold the flange
> that holds the leg to the table.
>
Now lets see you get them out when somebody has painted over them...

Andy

Re: Tap for M3.5 Screws

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From: jun...@admac.myzen.co.uk (alan_m)
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
Date: Sat, 7 May 2022 08:31:40 +0100
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 by: alan_m - Sat, 7 May 2022 07:31 UTC

On 06/05/2022 21:04, Vir Campestris wrote:
> On 30/04/2022 07:12, Paul wrote:
>>>
>>
>> For a decorative screw, the drive on the head, barely has to work.
>> The cheapness of the screw, is part of the equation.
>>
>> But there are screws with better drive characteristics.
>> The screwdriver doesn't slip out of these.
>>
>>     [Picture]
>>
>> https://i.postimg.cc/q7tfcwj2/screw.gif
>>
>> I made a table yesterday, and those screws hold the flange
>> that holds the leg to the table.
>>
> Now lets see you get them out when somebody has painted over them...
>
> Andy

You heat up the end of the screwdriver with a blow torch or on the gas
hob. This eother melts or burns the paint way from the screwdriver slot
in the screw.

--
mailto : news {at} admac {dot} myzen {dot} co {dot} uk

Re: Tap for M3.5 Screws

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From: nos...@needed.invalid (Paul)
Newsgroups: uk.d-i-y
Subject: Re: Tap for M3.5 Screws
Date: Sat, 7 May 2022 05:20:56 -0400
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 by: Paul - Sat, 7 May 2022 09:20 UTC

On 5/6/2022 4:04 PM, Vir Campestris wrote:
> On 30/04/2022 07:12, Paul wrote:
>>>
>>
>> For a decorative screw, the drive on the head, barely has to work.
>> The cheapness of the screw, is part of the equation.
>>
>> But there are screws with better drive characteristics.
>> The screwdriver doesn't slip out of these.
>>
>>     [Picture]
>>
>> https://i.postimg.cc/q7tfcwj2/screw.gif
>>
>> I made a table yesterday, and those screws hold the flange
>> that holds the leg to the table.
>>
> Now lets see you get them out when somebody has painted over them...
>
> Andy

Those particular screws aren't long enough to put up a fight.

The screwdriver, the tip isn't cut sharp on the end,
and if you drilled out the recess in the screw,
the driver will sink down enough to get a grip.

I have some regular steel screws, 3" to 4" ones,
with Robertson drive on them. And those are
hard to get out.

https://i.postimg.cc/pLM6M6DJ/robertson.jpg

The one on the left, is for the flange on the table leg.

The second from the right, now those are a handful to
remove at the best of times. The forces approach
the yield strength of the screw, so you can snap those
off. It's tricky picking a pilot size for those. Getting
paint on those would be bad.

The right-most one, is a better design at the four inch
length. It doesn't feel like it wants to snap before
the job is done. For some reason I bought a box of
those (maybe that was the only way they were packaged,
was by the box).

The chain stores don't have a good selection. The
Italian hardware store, for example, it has all sorts
of useful stuff. I can find a #7 screw there. They even
have twelve inch long finish nails (for when you're building
Noahs Arc). These cost about a buck a piece, or they used to.

Paul

Re: Tap for M3.5 Screws

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From: vir.camp...@invalid.invalid (Vir Campestris)
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Subject: Re: Tap for M3.5 Screws
Date: Sun, 8 May 2022 21:48:12 +0100
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 by: Vir Campestris - Sun, 8 May 2022 20:48 UTC

On 07/05/2022 08:31, alan_m wrote:
> You heat up the end of the screwdriver with a blow torch or on the gas
> hob. This eother melts or burns the paint way from the screwdriver slot
> in the screw.

That should help the tempering of the steel blade.

Andy

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