Profile Self-Tapping Screws

Self-tapping screws for wood differ from other variants by a narrow sharp tip and coarse thread with a wide pitch. This reduces the fastener’s resistance when driving and allows fine shavings to be removed from the resulting hole.

Such fasteners are used when working with drywall and plastic.

Profile self-tapping screws are screws designed for a specific task. By application, they are divided into self-tapping screws for driving into:

• wood and its derivatives;
• profiled or sheet metal;
• plastic;
• solid brick, monolithic concrete and other high-density materials.

A profile self-tapping screw for concrete and brick has a complex thread configuration with variable height along the entire length of the shank.

Self-tapping screws for metal are used to fasten materials to a steel base. They have a fine thread, a head with a press washer; the tip is made as a point or a drill bit. A pointed self-tapping screw is driven in after pre-drilling a hole, while drill-tip products do not require this operation. The hardness of the metal from which the self-tapping screw is made must be higher than the hardness of the base.