stainless steel chipboard screws

Chemical resin bolts typically consist of two primary components the bolt itself, which is often made from high-quality steel, and the surrounding resin cartridge. The resin is a carefully formulated mixture of synthetic polymers and other compounds that react when forced out of the cartridge by the bolt's threading action. Once activated, this resin expands and solidifies, forming a secure anchor around the bolt within the drilled hole.

...