Where to buy nylon screws?

[HappyHippyDad]

I want to replace some metal socket screws with nylon screws.

I can only find 25mm ones. I really need a selection, at least 35mm i would think, preferably a few 40mm ones as well.

If they are impossible to find, then I guess I could use the extenders, but I'd much rather have a selection of varying sized nylon.

Does anyone know where to purchase them?

 

[nicebutdim]

35mm


Also Teknipart offer a range of sizes, but nothing longer than 35mm

 

[ipf]

There's plenty on the internet.....but interested to know why you need them for socket outlets, they're part of the earthing arrangement.
Generally used for light switches where no earth is available.

 

[Dartlec]

There's plenty on the internet.....but interested to know why you need them for socket outlets, they're part of the earthing arrangement.
Generally used for light switches where no earth is available.

And perhaps arguable then too.

410.3.9 - Provision for fault protection may be omitted for the following equipment:​

...​

(iii) exposed-conductive-parts which, owing to their reduced dimensions (approximate maximum of 50mmx50mm) or their disposition cannot be gripped or come into significant contact with a part of the human body and provided that connection with a protective conductor could only be made with difficulty or would be unreliable​

NOTE: This exemption applies, for example, to bolts, rivets, nameplates, cable clips, screw and other fixings...​

...​

(Excuse typos...)

Sparky Ninja has a video on this (from about 6.00) which persuaded me.

Did buy some on ebay a while back anyway, but the only places I've recently come across lighting with no earth the back boxes have been the same vintage, metal with insulated socket tabs so didn't see the need.

 

[i=p/u]

Only use is electronics.

 

[Dartlec]

Only use is electronics.

Non-conducting locations perhaps too? Never seen one in the flesh so don't know the requirements.

I have seen a few properties with rusted back boxes because of damp walls, so I guess plastic back boxes and plastic screws might have a place then.... though probably fixing the damp is the correct long term answer!

 

[HappyHippyDad]

There's plenty on the internet.....but interested to know why you need them for socket outlets, they're part of the earthing arrangement.
Generally used for light switches where no earth is available.

My mistake. I've always called them socket screws. They are for lights switches.

And perhaps arguable then too.

410.3.9 - Provision for fault protection may be omitted for the following equipment:​

...​

(iii) exposed-conductive-parts which, owing to their reduced dimensions (approximate maximum of 50mmx50mm) or their disposition cannot be gripped or come into significant contact with a part of the human body and provided that connection with a protective conductor could only be made with difficulty or would be unreliable​

NOTE: This exemption applies, for example, to bolts, rivets, nameplates, cable clips, screw and other fixings...​

...​

(Excuse typos...)

Sparky Ninja has a video on this (from about 6.00) which persuaded me.

Did buy some on ebay a while back anyway, but the only places I've recently come across lighting with no earth the back boxes have been the same vintage, metal with insulated socket tabs so didn't see the need.

Gosh, I didn't know that reg existed! It makes it pretty clear fault protection can be omitted.

 

[nicebutdim]

Slightly off topic, but follows on with the same theme...

I've seen a few youtubers talk about resolving EICR issues where no earth is available at lighting points, and Class I fittings or metal switch plates are installed, by changing to plastic switches and class II lights.

Am I correct in understanding that this is not a suitable solution as they are undertaking work that doesn't meet current regulations?

Might have presented this with poor wording, but hopefully the underlying question is apparent.

 

[timhoward]

Slightly off topic, but follows on with the same theme...

I've seen a few youtubers talk about resolving EICR issues where no earth is available at lighting points, and Class I fittings or metal switch plates are installed, by changing to plastic switches and class II lights.

Am I correct in understanding that this is not a suitable solution as they are undertaking work that doesn't meet current regulations?

Might have presented this with poor wording, but hopefully the underlying question is apparent.

BPG4 (EICRs) points us to BPG1 (CU Changes) on this issue.

https://tinyurl.com/4e75c95r

and there's more afterwards for if the customer won't do it.

 

[nicebutdim]

That's clear enough. It was the idea of effecting a solution that wasn't to current regs, which didn't sit right with me.

I should probably read the Best Practice Guides as they may address other issues that I haven't yet reconciled.