Yes, it is generally safe and recommended to use stainless steel screws in pressure treated wood. Pressure treated wood has been chemically treated to resist rot and decay, and the chemicals used in the treatment process are not corrosive to stainless steel. In fact, stainless steel is a popular choice for outdoor applications because it is resistant to corrosion and can withstand the elements. However, it's worth noting that stainless steel screws may be more expensive than other types of screws and may not be the best choice for all applications. If you are considering using stainless steel screws in pressure treated wood, it is a good idea to make sure that the screws are the appropriate size and type for the project you are working on, and to follow proper installation techniques to ensure the screws are secure.
