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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Quick question - screwdriver bit width for electrical fittingscrews.
Having replaced my dud little electrical screwdriver with the cheapo
MacAlister one from Screwfix I am now searching for the best bit size for slotted screws which are in light switch and 13A sockets. Measuring the width they look to be about 7mm. So do I co for a 7mm bit, or slightly under size with a 6mm bit? I seem to be awash with Posidrive bits at the moment but not ones for slotted screws. Cheers Dave R -- AMD FX-6300 in GA-990X-Gaming SLI-CF running Windows 7 Pro x64 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
#2
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Quick question - screwdriver bit width for electrical fittingscrews.
On 11/07/2019 14:52, David wrote:
Having replaced my dud little electrical screwdriver with the cheapo MacAlister one from Screwfix I am now searching for the best bit size for slotted screws which are in light switch and 13A sockets. Measuring the width they look to be about 7mm. So do I co for a 7mm bit, or slightly under size with a 6mm bit? I seem to be awash with Posidrive bits at the moment but not ones for slotted screws. Grind a pozidrive bit down to a flat bit of your desired size. |
#3
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Quick question - screwdriver bit width for electrical fittingscrews.
On 11/07/2019 14:52, David wrote:
Having replaced my dud little electrical screwdriver with the cheapo MacAlister one from Screwfix I am now searching for the best bit size for slotted screws which are in light switch and 13A sockets. Measuring the width they look to be about 7mm. So do I co for a 7mm bit, or slightly under size with a 6mm bit? I seem to be awash with Posidrive bits at the moment but not ones for slotted screws. I bought a set of flat bladed bits off Ebay ranging from may be 3mm to 8mm for a few pounds, with long round sections after the hex part. Quality seems OK. (I also found some other bits with extended shanks- torx, hex, Pozi, ....) -- Always smile when walking, you never know where there is a camera ;-) Remarkable Coincidences: The Stock Market Crashes of 1929 and 2008 happened on the same date in October. In Oct 1907, a run on the Knickerbocker Trust Company led to the Great Depression. |
#4
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Quick question - screwdriver bit width for electrical fittingscrews.
On 11/07/2019 14:52, David wrote:
Having replaced my dud little electrical screwdriver with the cheapo MacAlister one from Screwfix I am now searching for the best bit size for slotted screws which are in light switch and 13A sockets. Measuring the width they look to be about 7mm. So do I co for a 7mm bit, or slightly under size with a 6mm bit? I seem to be awash with Posidrive bits at the moment but not ones for slotted screws. Cheers I would never use an electric screwdriver on such screws (machine bolts IMHO). -- Adam |
#5
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Quick question - screwdriver bit width for electrical fitting screws.
ARW wrote:
On 11/07/2019 14:52, David wrote: Having replaced my dud little electrical screwdriver with the cheapo MacAlister one from Screwfix I am now searching for the best bit size for slotted screws which are in light switch and 13A sockets. Measuring the width they look to be about 7mm. So do I co for a 7mm bit, or slightly under size with a 6mm bit? I seem to be awash with Posidrive bits at the moment but not ones for slotted screws. Cheers I would never use an electric screwdriver on such screws (machine bolts IMHO). 'Machine screws' is surely the right term for them isn't it? Regarding the right sized screwdriver I find that a 4mm wide flat blade screwdriver works well for most electrical work. Occasionally one needs one smaller or larger but 4mm seems good generally. Having said that 4mm is quite an unusual size, it doesn't tend to come with sets of screwdrivers. -- Chris Green · |
#6
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Quick question - screwdriver bit width for electrical fitting screws.
On Thursday, 11 July 2019 14:52:46 UTC+1, David WE Roberts (Google) wrote:
Having replaced my dud little electrical screwdriver with the cheapo MacAlister one from Screwfix I am now searching for the best bit size for slotted screws which are in light switch and 13A sockets. Measuring the width they look to be about 7mm. So do I co for a 7mm bit, or slightly under size with a 6mm bit? I seem to be awash with Posidrive bits at the moment but not ones for slotted screws. Cheers Dave R Neither, too big. And as almost said, power driving slotted screws just doesn't work very well. The smaller the bit the more stable it is, so try 4 or 5mm. NT |
#7
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Quick question - screwdriver bit width for electrical fittingscrews.
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#8
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Quick question - screwdriver bit width for electrical fittingscrews.
On 11/07/2019 19:55, Chris Green wrote:
ARW wrote: On 11/07/2019 14:52, David wrote: Having replaced my dud little electrical screwdriver with the cheapo MacAlister one from Screwfix I am now searching for the best bit size for slotted screws which are in light switch and 13A sockets. Measuring the width they look to be about 7mm. So do I co for a 7mm bit, or slightly under size with a 6mm bit? I seem to be awash with Posidrive bits at the moment but not ones for slotted screws. Cheers I would never use an electric screwdriver on such screws (machine bolts IMHO). 'Machine screws' is surely the right term for them isn't it? Regarding the right sized screwdriver I find that a 4mm wide flat blade screwdriver works well for most electrical work. Occasionally one needs one smaller or larger but 4mm seems good generally. Having said that 4mm is quite an unusual size, it doesn't tend to come with sets of screwdrivers. Screwfix call them electrical screws. -- Adam |
#9
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Quick question - screwdriver bit width for electrical fittingscrews.
On 11/07/2019 14:52, David wrote:
Having replaced my dud little electrical screwdriver with the cheapo MacAlister one from Screwfix I am now searching for the best bit size for slotted screws which are in light switch and 13A sockets. Measuring the width they look to be about 7mm. So do I co for a 7mm bit, or slightly under size with a 6mm bit? Since may will sit in a small recess, you need a driver that is slightly under the full width - otherwise you will catch on the edges of the recess. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#10
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Quick question - screwdriver bit width for electrical fitting screws.
What?
Brian -- ----- -- This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please Note this Signature is meaningless.! "Andy Bennet" wrote in message ... On 11/07/2019 14:52, David wrote: Having replaced my dud little electrical screwdriver with the cheapo MacAlister one from Screwfix I am now searching for the best bit size for slotted screws which are in light switch and 13A sockets. Measuring the width they look to be about 7mm. So do I co for a 7mm bit, or slightly under size with a 6mm bit? I seem to be awash with Posidrive bits at the moment but not ones for slotted screws. Grind a pozidrive bit down to a flat bit of your desired size. |
#11
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Quick question - screwdriver bit width for electrical fitting screws.
On Thursday, 11 July 2019 21:55:34 UTC+1, John Rumm wrote:
On 11/07/2019 14:52, David wrote: Having replaced my dud little electrical screwdriver with the cheapo MacAlister one from Screwfix I am now searching for the best bit size for slotted screws which are in light switch and 13A sockets. Measuring the width they look to be about 7mm. So do I co for a 7mm bit, or slightly under size with a 6mm bit? Since may will sit in a small recess, you need a driver that is slightly under the full width - otherwise you will catch on the edges of the recess. M3.5 screws in electrical accessories are never tightened to anywhere near their load limit, they'd break plastic if they were. There is thus no need for a large bit. Large slotted bits are much more unstable than smaller ones. NT |
#12
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Quick question - screwdriver bit width for electrical fittingscrews.
On Thu, 11 Jul 2019 19:32:58 +0100, ARW wrote:
On 11/07/2019 14:52, David wrote: Having replaced my dud little electrical screwdriver with the cheapo MacAlister one from Screwfix I am now searching for the best bit size for slotted screws which are in light switch and 13A sockets. Measuring the width they look to be about 7mm. So do I co for a 7mm bit, or slightly under size with a 6mm bit? I seem to be awash with Posidrive bits at the moment but not ones for slotted screws. Cheers I would never use an electric screwdriver on such screws (machine bolts IMHO). I'm following the example of our electrician, where the time saved winding screws in and out of multiple fittings builds up remarkably quickly. This isn't some massive drill/driver, but a 3.6V one with a torque control. So far it has worked well for me apart from the bit being too small to easily centre. Cheers Dave R -- AMD FX-6300 in GA-990X-Gaming SLI-CF running Windows 7 Pro x64 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
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