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DMcMahon · 23rd Mar 2023, 10:49 am

Went to B & Q to get some plumbing parts and had a look at their various screw fixings.

All their plastic combined screw cup and cover were all too small to adequately cover the counterbored holes in the side panels.

All their plastic screw cups and most of their metal cups also were too small but luckily found one steel cup that was a good size, it also retains an M4 screw. Also brought some SST M4 countersunk machine screws. Went for 30mm as thought they just would be long enough but they are too short. They did not have 35mm (the length of the original screws), they did have 40mm which I thought might be too long as I remember some of the fixing holes have metalwork some distance behind.

I think the SST countersunk screws will look OK in the steel cups, am not worried about the top of the screw heads showing.

David

23rd Mar 2023, 10:49 am	#23
DMcMahon Dekatron Join Date: Apr 2019 Location: Worthing, West Sussex, UK. Posts: 6,600	Re: Top Hat Fixing Washers Name Went to B & Q to get some plumbing parts and had a look at their various screw fixings. All their plastic combined screw cup and cover were all too small to adequately cover the counterbored holes in the side panels. All their plastic screw cups and most of their metal cups also were too small but luckily found one steel cup that was a good size, it also retains an M4 screw. Also brought some SST M4 countersunk machine screws. Went for 30mm as thought they just would be long enough but they are too short. They did not have 35mm (the length of the original screws), they did have 40mm which I thought might be too long as I remember some of the fixing holes have metalwork some distance behind. I think the SST countersunk screws will look OK in the steel cups, am not worried about the top of the screw heads showing. David