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Product Details

For use with PVC and metal conduit boxes.

Technical Specification
Manufacture ID S420B
Thread M4
Pack Size 100
Delivery details
Order value: Under £10 £10 & over
Express usually Next Business Day before 6pm £5 Free
Turbo usually Next Business Day before 12 noon £10 £5
Remote areas standard delivery (2-4 days) £5 Free
Order Value: Under £25 Over £25 but less than £75 £75 & Over
£10 £5 Free

Please note items delivered by our suppliers are not available for the options above. Delivery times may vary.

More about Delivery & Returns
Click & Collect details
If you are using our Click & Collect service please note the following:
  • Order online or over the phone and collect in branch from 5 minutes later.
  • Ensure you check stock is available for collection at your chosen branch.
  • Check branch opening hours to ensure you have sufficient time to collect.
  • For items not available for same day collection, place order before 8pm Mon-Sat (4pm Sun) and you can collect Next Business Day (Mon-Fri) after 3pm.
  • If we have your mobile number, we’ll send you a text when your order is ready to collect.
Pan Head Brass Screw M4 x 20mm (100 Pack) is rated 4.0 out of 5 by 8.
Rated 5 out of 5 by from Needed to complete job Needed for junction box purchased
Date published: 2019-11-10
Rated 3 out of 5 by from only wanted two screws but had to buy a bag full Thought as I had purchased a plastic box and lid I wanted the screws to hold them together but I could only buy them by the bag-full of 100 only wanted two seems a daft they do not supply the screws with the box or lid for a few more pence added OK they were not expensive but a waste
Date published: 2019-10-30
Rated 1 out of 5 by from make sure you buy all the seperate bits 3 trips to buy what you need separate screws separate washers buy elsewhere next time
Date published: 2019-07-06
Rated 5 out of 5 by from Brass Screws These screws are the ideal thing for fixing the box lids.
Date published: 2019-05-07
Rated 5 out of 5 by from Excellent price Just what I was looking for and at an excellent price
Date published: 2017-02-06
Rated 5 out of 5 by from Perfect for conduit caps & other uses Well machined & perfect for the job. AlsO being standard metric thread it was easy to use some with nuts on a different job too.
Date published: 2017-01-05
Rated 3 out of 5 by from Unnecessary purchase?? If you buy conduit boxes then you need the gaskets and screws extra. Still good value. However, due to the designers, although knowing they are for electrics and every other fitting used 3.5 electrical screws, they have designed the boxes to take M4 screws. It would have been so easy to have made them for the screws every electrician has and not require these extra. Good screws though and they do the job.
Date published: 2016-12-22
Rated 5 out of 5 by from Brass Screws Bought these screws as the screws that came with the tap glands were not long enough to hold tap handle, they worked a treat. Last time i used steel M4 screw but rusted shut so this is well woth the buy.
Date published: 2016-12-08
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