Suction Cup with Top Pilot Hole. 47mm x 500 bulk box
Adams bulk suction cups with a top pilot hole attach an item with a screw. See dimensions of this suction cup in the technical drawing.
A coarse self tapping type screw of the correct length and width has to be used so that it cuts it's own thread into the suction cup neck.
Each 47mm Adams suction cup is rated to hold 3 pounds (1.36kgs) in weight, when fixed to a flat, clean, dry window or slick/shiny, non textured, non porous surface like mirrors, glossy plastic or plain glazed ceramic tiles.
The weight loading refers to the actual suction cup. This loading will be lowered as an attached item will be reliant on the thread it has formed within the cup.
Always thoroughly test any products for your application needs.