Trying to repair my Bosch hedge trimmer I find all the screws are Torq T15
except for one which looks like a Torq but has a little dimple in the head
of the screw so that my Torq screw driver doesn't fit. Please anyone got
any idea what these type of screws are called so I can get a screwdrivers
for it .

Sam

"Sam Farrell" wrote

Trying to repair my Bosch hedge trimmer I find all the screws are Torq T15
except for one which looks like a Torq but has a little dimple in the head
of the screw so that my Torq screw driver doesn't fit. Please anyone got
any idea what these type of screws are called so I can get a screwdrivers
for it .

Sam

Sounds like some kind of security measure.
They make allen screws with dimples also.
You need the appropriate tool, but with a hollow "tip" to accommodate the
dimple IYSWIM.
Look at the bottom of this page for details:

http://en.wikipedia.org/wiki/Torx

HTH

Phil

On Thu, 4 Jun 2009 15:10:45 +0100, Sam Farrell wrote:

except for one which looks like a Torq but has a little dimple in the
head of the screw so that my Torq screw driver doesn't fit.

It's an "anti tamper" torx type. Get a fine lever and break the pin out
and use an ordinary torx driver. Or wander down to any half decent place
selling tools and buy a complete set of "security" 1/4" hex drivers for
about a fiver...

--
Cheers
Dave.

TheScullster wrote:
"Sam Farrell" wrote

Trying to repair my Bosch hedge trimmer I find all the screws are Torq T15
except for one which looks like a Torq but has a little dimple in the head
of the screw so that my Torq screw driver doesn't fit. Please anyone got
any idea what these type of screws are called so I can get a screwdrivers
for it .

Sam

Sounds like some kind of security measure.
They make allen screws with dimples also.
You need the appropriate tool, but with a hollow "tip" to accommodate the
dimple IYSWIM.
Look at the bottom of this page for details:

http://en.wikipedia.org/wiki/Torx

HTH

Phil


These are tamperproof torx heads designed to slow you down from
dismantling tools!!
Provided the screw is not too tight, try a small flat bladed screwdriver
wedged between the central pip and a couple of the star points. Nasty
bodge but often works in an emergency.

Bob

On Thu, 4 Jun 2009 15:10:45 +0100, "Sam Farrell"
wrote:

Trying to repair my Bosch hedge trimmer I find all the screws are Torq T15
except for one which looks like a Torq but has a little dimple in the head
of the screw so that my Torq screw driver doesn't fit. Please anyone got
any idea what these type of screws are called so I can get a screwdrivers
for it .

Sam



These any good?
http://www.screwfix.com/prods/18983/...y-Bit-Set-33Pc

Old Git wrote:
On Thu, 4 Jun 2009 15:10:45 +0100, "Sam Farrell"
wrote:

Trying to repair my Bosch hedge trimmer I find all the screws are Torq T15
except for one which looks like a Torq but has a little dimple in the head
of the screw so that my Torq screw driver doesn't fit. Please anyone got
any idea what these type of screws are called so I can get a screwdrivers
for it .

These any good?
http://www.screwfix.com/prods/18983/...y-Bit-Set-33Pc

I've got that set and have used it in the past on what sounds exactly
like the OP's screws.

David

These look like what I need, many thanks

Sam
"Old Git" wrote in message
...
On Thu, 4 Jun 2009 15:10:45 +0100, "Sam Farrell"
wrote:

Trying to repair my Bosch hedge trimmer I find all the screws are Torq T15
except for one which looks like a Torq but has a little dimple in the head
of the screw so that my Torq screw driver doesn't fit. Please anyone got
any idea what these type of screws are called so I can get a screwdrivers
for it .

Sam



These any good?
http://www.screwfix.com/prods/18983/...y-Bit-Set-33Pc

In an earlier contribution to this discussion,
Sam Farrell wrote:

"Old Git" wrote in message
...
On Thu, 4 Jun 2009 15:10:45 +0100, "Sam Farrell"
wrote:

Trying to repair my Bosch hedge trimmer I find all the screws are
Torq T15 except for one which looks like a Torq but has a little
dimple in the head of the screw so that my Torq screw driver
doesn't fit. Please anyone got any idea what these type of screws
are called so I can get a screwdrivers for it .

Sam



These any good?
http://www.screwfix.com/prods/18983/...y-Bit-Set-33Pc


These look like what I need, many thanks

Sam

One of the screws on my pressure washer was a T15 security screw with a
little 'tit' in the middle, preventing the use of a normal torx screwdriver.
I attacked said tit with a spring-loaded centre-punch, and managed to break
it off so that an ordinary torx screwdirver would fit.

Maybe worth a try?
--
Cheers,
Roger
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On Thu, 04 Jun 2009 15:10:45 +0100, Sam Farrell wrote:

Trying to repair my Bosch hedge trimmer I find all the screws are Torq
T15 except for one which looks like a Torq but has a little dimple in
the head of the screw so that my Torq screw driver doesn't fit. Please
anyone got any idea what these type of screws are called so I can get a
screwdrivers for it .

Sam

I bought the set of security Torx bits from Machine Mart for £6 ages ago
and have used them *a lot*, as regular Torx too. They don't seem to have
worn at all. I guess they need to be made of something better than the
usual liquorice to handle having the hole down the middle.

Coincidentally, it was while trying to 'repair' my Bosch hedge trimmer
(replace the chopped cable more like) that I found one of the little
standard Torx buggers was so deep, in such a narrow hole, that I had to
pop down to Screwfix and buy a set of proper screwdriver style Torx
drivers.

Always nice to find a real excuse...