Metal daybeds are typically secured with metal screws. A hardware kit may include eight screws 1 1/2 inches long to secure the frame, eight shorter screws, approximately 1 inch in length to secure the rails and eight 2-inch screws with bolts to secure the cross bars, which attach to the rails and support the mattress. A hardware kit may also contain rubber pads to fit over the feet of the daybed to prevent damage to the floor.
Depending on the type of screws that come with the daybed, you may need an Allen wrench, a Phillips screwdriver or a flat-head screwdriver to assemble the bed. An electric screwdriver expedites the process but really isn't necessary, since the screws slip easily into the metal.
In addition to the hardware, metal daybeds come with a metal frame, two side rails, footboard, headboard, and crossbars. The metal pieces may be made from an aluminum alloy, prone to bending. Vintage or more costly daybeds may be made of wrought iron.
Daybeds have some elements in common but may vary slightly in materials and assembly. If you've lost your hardware kit, inspect your daybed, counting the number and size of holes before purchasing new hardware. Daybed manufacturers may offer hardware kits online or at stores to replace missing pieces.