black hex head self tapping screws

Chemical anchor bolts are specialized fasteners that utilize a two-part adhesive system to bond with the concrete substrate. Unlike traditional mechanical anchors that rely purely on physical expansion or friction to secure themselves within the concrete, chemical anchors use a resin or adhesive, which is mixed with a hardener, to create a strong bond. This resin is typically injected into pre-drilled holes in the concrete before the anchor bolt is inserted. As the resin cures, it forms a very strong adhesive bond with both the bolt and the concrete, leading to excellent load-bearing capabilities.


...

35mm chipboard screws are designed with a specific thread pattern and length to cater to the thickness and density of chipboard. The 35mm measurement refers to the screw's overall length, which typically includes a threaded section that pierces through the material and a non-threaded section, called the shank, that sits beneath the surface. This length allows for a secure hold without compromising the structural integrity of the board.

...