Hi, I'm about to mount shelves supported by brackets.
Wall material: 12mm plywood + beadboard 15mm. Need screws with a small countersunk head, so I'm thinking of using 4.2 x 75 stainless deck screws that I have lying around. The shelves with contents weigh about 20 kg, but there will be 8 screws, so it should work with a margin under normal circumstances. However, I notice a coarser thread on the deck screws. Will they hold well enough for this purpose, or should I use regular wood screws?
Wall material: 12mm plywood + beadboard 15mm. Need screws with a small countersunk head, so I'm thinking of using 4.2 x 75 stainless deck screws that I have lying around. The shelves with contents weigh about 20 kg, but there will be 8 screws, so it should work with a margin under normal circumstances. However, I notice a coarser thread on the deck screws. Will they hold well enough for this purpose, or should I use regular wood screws?
Well - it should hold with a margin if screwed in properly, so to speak - the downward force from the shelf's weight and load must be anchored in the wall "both high and low," so to speak - as long as this is done sensibly it should hold with a margin ... the coarser thread is unlikely to affect this more than marginally ... stainless steel is also stronger than ordinary "bonnträskruv" ... .
Ok, should be ok. The threads are not very wide apart, but decking screws are a bit thinner compared to wood screws of the same length, and perhaps they don't have the same strength requirements when used for decking against floor joists, hence my question...
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· Västerbottens län
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75 long? Will there be any threads that are attached to the panel + board, otherwise nails will work just as well.
Protte
Protte
They were the ones I had with a small head (the screw should go precisely into a woodworking detail in the console etc., I don't want to fill over it).
For one of the two shelves, I can screw it into the beam under the panel/plywood, but the brackets are still 21 mm, corresponding to the part of the screw that is unthreaded, so the threads will surely be used. But sure, plywood/beadboard should suffice every time, so 50 mm screws with 20 unthreaded should be enough....
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For one of the two shelves, I can screw it into the beam under the panel/plywood, but the brackets are still 21 mm, corresponding to the part of the screw that is unthreaded, so the threads will surely be used. But sure, plywood/beadboard should suffice every time, so 50 mm screws with 20 unthreaded should be enough....
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