Countersunk (CSK) Screws

Countersunk (CSK) Screws are a type of fastener widely used for creating flush or recessed connections in various applications. These screws are specifically designed to be used with countersunk holes, where the top surface of the screw head sits flush with or below the surface of the material being fastened.

The term "countersunk" refers to the conical-shaped recess on the head of the screw. This recess allows the screw to sit flush with the material's surface, resulting in a smooth and even finish. Countersinking provides multiple benefits, including reducing the risk of snagging, enhancing the aesthetic appearance, and enabling the seamless installation of additional components or materials.

When using CSK screws, the addition of nuts and washers is essential. Nuts are hexagonal-shaped components that thread onto the screw, securing it in place. Washers, on the other hand, are thin, flat discs placed between the nut and the surface being fastened.