6 mm screws, 20 mm length, Cake stand supply, cake stand screw, cake stand DIY Listing is for 3 screws that work with 6mm cake stand handles When making cake stands with bases and your stock cake stand screw is not long enough, these should fit the bill.
These are best for thicker plates when going through a plate and base at the same time. 20 mm or 3/4 inch length Phillips head Zinc plated
I use these screws exclusively on my stands that have bases.
Diamond core drill bits and handle hardware also available in cake stand section