I need to replace the bulb in a plastic outdoor light fitting that takes a 2D type flourescent light bulb.

The cover is held own by two screws with heads of a type I've never seen before

The heads are triangular and each side of the triangle is a convex curve about 5mm long.

I'd be grateful for any info on what these are called and where I might find a tool to remove them

Murmansk wrote:

The heads are triangular and each side of the triangle is a convex curve about 5mm long.
I'd be grateful for any info on what these are called and where I might find a tool to remove them

Perhaps these?

https://google.co.uk/search?tbm=isch&q=TP3+security+screws

Yes I saw something similar on the back of a Sony TV many moons ago.

One assumes its supposed to stop little johnny undoing them and poking his
fingers near high voltages.
Brian

--
From the Sofa of Brian Gaff Reply address is active
Remember, if you don't like where I post
or what I say, you don't have to
read my posts! :-)
"Andy Burns" wrote in message
o.uk...
Murmansk wrote:

The heads are triangular and each side of the triangle is a convex curve
about 5mm long.
I'd be grateful for any info on what these are called and where I might
find a tool to remove them

Perhaps these?

https://google.co.uk/search?tbm=isch&q=TP3+security+screws

On 29/11/15 18:10, Murmansk wrote:
I need to replace the bulb in a plastic outdoor light fitting that
takes a 2D type flourescent light bulb.

The cover is held own by two screws with heads of a type I've never
seen before

The heads are triangular and each side of the triangle is a convex
curve about 5mm long.

I'd be grateful for any info on what these are called and where I
might find a tool to remove them


I've seen those - some sort of security bit.

Perhaps try Toolstation (etc) for a mixed pack of security bits - these
seem to cover all the weird stuff I've seen.

Thanks no joy so far but I may have given a misleading description when I said "screw" - maybe I should have said bolt as it's the head that is triangular so it needs a mini socket to remove it

This photo

https://www.dropbox.com/s/3ifgjpfh9s...pture.JPG?dl=0

shows the shape of the thing but refers to a head with a hole in of this shape - I needs to remove a screw with a head that IS that shape!

Murmansk wrote:
This photo

https://www.dropbox.com/s/3ifgjpfh9s...pture.JPG?dl=0

shows the shape of the thing but refers to a head with a hole in of this
shape - I needs to remove a screw with a head that IS that shape!


Just out of interest, is there a reason a light with security screws has
been used? Is it in a public place? If not, I think replacement with
another light without security screws will save a lot if aggro.

Presumably the fixture came with a security screw key that the sparky has
made off with to ensure repeat business.

Tim

"Murmansk" wrote in message
...
Thanks no joy so far but I may have given a misleading description when I
said "screw" - maybe I should have said bolt as it's the head that is
triangular so it needs a mini socket to remove it


Try a normal socket (adjust size to match the head).

5.5mm sockets remove the old Thorne lighting security screws.

--
Adam

Murmansk wrote:

I may have given a misleading description when I said "screw"
maybe I should have said bolt as it's the head that is triangular so
it needs a mini socket to remove it

Straight sided triangel, rather than curved triangle, a bit bigger than
you want, and the wrong side of the Atlantic, but it might get you
closer ...

http://www.wihatools.com/300seri/344_triangles.htm

On 29/11/2015 19:11, Murmansk wrote:
Thanks no joy so far but I may have given a misleading description when I said "screw" - maybe I should have said bolt as it's the head that is triangular so it needs a mini socket to remove it


If the head is "proud" as opposed to recessed, then as said, a normal
socket will probably do it, as long as it's not too tight.

Or one of those "multi pin" socket things are sometimes good for odd
shaped things.

On 29/11/2015 18:10, Murmansk wrote:
I need to replace the bulb in a plastic outdoor light fitting that takes a 2D type flourescent light bulb.

The cover is held own by two screws with heads of a type I've never seen before

The heads are triangular and each side of the triangle is a convex curve about 5mm long.

I'd be grateful for any info on what these are called and where I might find a tool to remove them


Buy a set of security drivers from CPC.

Bill

On Sunday, 29 November 2015 18:10:57 UTC, Murmansk wrote:
I need to replace the bulb in a plastic outdoor light fitting that takes a 2D type flourescent light bulb.

The cover is held own by two screws with heads of a type I've never seen before

The heads are triangular and each side of the triangle is a convex curve about 5mm long.

I'd be grateful for any info on what these are called and where I might find a tool to remove them

A socket should work. If not...
http://wiki.diyfaq.org.uk/index.php/..._Damaged_Screw


NT

On 29/11/2015 18:10, Murmansk wrote:
I need to replace the bulb in a plastic outdoor light fitting that takes a 2D type flourescent light bulb.

The cover is held own by two screws with heads of a type I've never seen before

The heads are triangular and each side of the triangle is a convex curve about 5mm long.

I'd be grateful for any info on what these are called and where I might find a tool to remove them

http://www.amazon.com/Silverhill-Too.../dp/B001F3FUBK

Yes - that is .com not .co.uk. :-(

--
Rod

Murmansk wrote:
I need to replace the bulb in a plastic outdoor light fitting that takes
a 2D type flourescent light bulb.

The cover is held own by two screws with heads of a type I've never seen before

The heads are triangular and each side of the triangle is a convex curve about 5mm long.

I'd be grateful for any info on what these are called and where I might
find a tool to remove them



http://www.lasertools.co.uk/news.aspx?article=632

Tim

"Tim+" wrote in message
...
Murmansk wrote:
I need to replace the bulb in a plastic outdoor light fitting that takes
a 2D type flourescent light bulb.

The cover is held own by two screws with heads of a type I've never seen
before

The heads are triangular and each side of the triangle is a convex curve
about 5mm long.

I'd be grateful for any info on what these are called and where I might
find a tool to remove them



http://www.lasertools.co.uk/news.aspx?article=632

That one doesnt have all sides of the triangle convex.

Ranger wrote:


"Tim+" wrote in message
...
Murmansk wrote:
I need to replace the bulb in a plastic outdoor light fitting that takes
a 2D type flourescent light bulb.

The cover is held own by two screws with heads of a type I've never seen
before

The heads are triangular and each side of the triangle is a convex curve
about 5mm long.

I'd be grateful for any info on what these are called and where I might
find a tool to remove them



http://www.lasertools.co.uk/news.aspx?article=632

That one doesnt have all sides of the triangle convex.



Hmm, time for a "Birmingham screwdriver" and new light fitting then I
think. ;-)

Tim

"Tim+" wrote in message
...
Ranger wrote:


"Tim+" wrote in message
...
Murmansk wrote:
I need to replace the bulb in a plastic outdoor light fitting that
takes
a 2D type flourescent light bulb.

The cover is held own by two screws with heads of a type I've never
seen
before

The heads are triangular and each side of the triangle is a convex
curve
about 5mm long.

I'd be grateful for any info on what these are called and where I might
find a tool to remove them



http://www.lasertools.co.uk/news.aspx?article=632

That one doesnt have all sides of the triangle convex.



Hmm, time for a "Birmingham screwdriver" and new light fitting then I
think. ;-)

Dunno, a dremel is a tad more elegant.

Ranger wrote:


"Tim+" wrote in message
...
Ranger wrote:


"Tim+" wrote in message
...
Murmansk wrote:
I need to replace the bulb in a plastic outdoor light fitting that
takes
a 2D type flourescent light bulb.

The cover is held own by two screws with heads of a type I've never
seen
before

The heads are triangular and each side of the triangle is a convex
curve
about 5mm long.

I'd be grateful for any info on what these are called and where I might
find a tool to remove them



http://www.lasertools.co.uk/news.aspx?article=632

That one doesnt have all sides of the triangle convex.



Hmm, time for a "Birmingham screwdriver" and new light fitting then I
think. ;-)

Dunno, a dremel is a tad more elegant.


Sod's law dictates that it will be recessed down a hole. ;-)

Tim

On Mon, 30 Nov 2015 21:12:18 +1100, Ranger wrote:

"Tim+" wrote in message
...
Ranger wrote:


"Tim+" wrote in message
...
Murmansk wrote:
I need to replace the bulb in a plastic outdoor light fitting that
takes a 2D type flourescent light bulb.

The cover is held own by two screws with heads of a type I've never
seen before

The heads are triangular and each side of the triangle is a convex
curve about 5mm long.

I'd be grateful for any info on what these are called and where I
might find a tool to remove them



http://www.lasertools.co.uk/news.aspx?article=632

That one doesnt have all sides of the triangle convex.



Hmm, time for a "Birmingham screwdriver" and new light fitting then I
think. ;-)

Dunno, a dremel is a tad more elegant.

That's a Hampstead screwdriver.

Tim+ wrote:
http://www.lasertools.co.uk/news.aspx?article=632

That one doesn't have all sides of the triangle convex.

Might they be tri-head - similar but with more rounded corners:
http://www.fastenright.com/security-fasteners/tri-head ? If so they
sell tools but it might well be cheaper to replace the fitting. And to
try first a soak with Plus Gas or similar and then sockets or large
locking pliers.




--
Robin
reply to address is (meant to be) valid

On 30/11/2015 09:49, Tim+ wrote:
Ranger wrote:


"Tim+" wrote in message
...
Murmansk wrote:
I need to replace the bulb in a plastic outdoor light fitting that takes
a 2D type flourescent light bulb.

The cover is held own by two screws with heads of a type I've never seen
before

The heads are triangular and each side of the triangle is a convex curve
about 5mm long.

I'd be grateful for any info on what these are called and where I might
find a tool to remove them



http://www.lasertools.co.uk/news.aspx?article=632

That one doesnt have all sides of the triangle convex.



Hmm, time for a "Birmingham screwdriver" and new light fitting then I
think. ;-)

You obviously live in or close to Manchester?

In message , Ranger
writes
"Tim+" wrote in message
...

http://www.lasertools.co.uk/news.aspx?article=632

That one doesnt have all sides of the triangle convex.

I think they do - look at the smallest size. Fifteen quid via eBay,
postage paid. The eBay photo makes the convex appear more pronounced.

--
Graeme

"News" wrote in message
...
In message , Ranger
writes
"Tim+" wrote in message
...

http://www.lasertools.co.uk/news.aspx?article=632

That one doesnt have all sides of the triangle convex.

I think they do - look at the smallest size.

That one doesnt either. 2 sides are concave, one side convex.

Fifteen quid via eBay,
postage paid. The eBay photo makes the convex appear more pronounced.

In article ,
Murmansk wrote:
The heads are triangular and each side of the triangle is a convex curve
about 5mm long.

I'd be grateful for any info on what these are called and where I might
find a tool to remove them

A bi-hex socket or ring spanner will grip it.

If you can measure the size of the triangle accurately might be possible
to guess at which one.

--
*Confession is good for the soul, but bad for your career.

Dave Plowman London SW
To e-mail, change noise into sound.

On 30/11/2015 16:41, Dave Plowman (News) wrote:
In article ,
Murmansk wrote:
The heads are triangular and each side of the triangle is a convex curve
about 5mm long.

I'd be grateful for any info on what these are called and where I might
find a tool to remove them

A bi-hex socket or ring spanner will grip it.

If you can measure the size of the triangle accurately might be possible
to guess at which one.


Mole grips might undo it, if it is not recessed and there is access from
the side. Stilson might also work.

--
Michael Chare

On Sun, 29 Nov 2015 10:10:52 -0800 (PST), Murmansk wrote:

I'd be grateful for any info on what these are called and where I might find a tool to remove them

Find a piece of suitable aluminum tubing, and pound the tang of a triangular
file down that to get the shape you want...?


Thomas Prufer