Counter sunk Allen bolt we have in standard grades and quality we offer reasonable prices for our all products. This products are extensively. Which used in mold, electricity, construction, solar energy, automotive, machinery & equipment and other industries. A counter sunk allen bolt is a type of fastening that sits flush with the surface of the material it occupies. These bolts typically are used so that you can cover them easily with either a screw cap or piece of wood. The typical angle of a allen bolt head is 82 degrees, but this varies depending on the application.
Stainless Steel, Carbon Steel
EN 10204.3.1 (2004).
Hence A hex key in counter bolts, also known as an Allen key or Allen wrench. It is a small handheld tool that’s used for for driving bolts and screws with a hexagonal socket.