self tapping screws

The difference between self-tapping screws and general screws is that general screws must have a processed screw hole before they can be screwed into the wall (or called the working surface).

Self-tapping screws do not need to pre-process the threaded hole, and can tap themselves while screwing in.

In order to achieve the purpose of self-tapping, this hexagonal drill screw is generally pointed to facilitate squeezing into the object to be screwed in.

Advantages of self-tapping screws

Because it can tap out the thread that matches it, it has a high anti-loosening ability when tightening, and can be disassembled and reused.

Among small screw products, self-tapping screws are superior to other screws in size, thread form, head shape and tapping performance. The product has irreplaceable characteristics and is widely used in engineering because of its high strength, single-piece, single-body, and single-sided assembly characteristics.

Processing process of self-tapping screws

Pickling, remove the surface oxide film of the material, so that the surface forms a layer of phosphate film, and minimize the roughness of the wire surface and the scratches of the mold by debris.

Wire drawing, also known as wire drawing, draws the wire to the cold heading machine.

Stamping, first form the head of the self-tapping screw, mostly countersunk, round head, large flat head, external hexagon, internal hexagon, etc.

Thread rolling, pass the self-tapping screw thread through the die to generate the thread.

Heat treatment, since the self-tapping screw needs to be tapped into its working surface by itself, there are certain requirements for hardness.

Surface treatment, anti-corrosion to increase life, some scenes have other special needs such as beauty, HY has environmental quality requirements for export products, usually trivalent white zinc dephosphorization treatment, also known as environmental white zinc.

Why choose HY

Free sample support, for samples of our existing molds and stocks. It is free. You only need to pay the freight.

For customized samples, we can help you design it to your information and requirements, and the sample time is about 10-20 working days.

High-quality stainless steel material: Our free sample stainless steel square drive pan head screws are made of high-quality stainless steel, ensuring durability and corrosion resistance in a variety of industrial applications.

Wide range of length options: Available in lengths ranging from 10mm to 100mm, this product caters to different requirements, allowing users to choose the perfect fit for their specific needs.

Easy to use square drive: The pan head design and square drive function make installing and removing the screws simple, reducing the need for special tools and saving time.

Suitable for a variety of industries: HY has standard GB certification, this screw is suitable for a variety of industries, including manufacturing, construction, and more, according to customer requirements.