The stainless steel self-drilling screw is a high weather-resistant fastener. Its core is made of 201/304/316/410 stainless steel base material, which contains chromium-nickel alloy components. Its acid and alkali resistance as well as rust resistance are far superior to ordinary carbon steel, and it is not easy to rust after long-term use in humid or outdoor environments.The self-drilling tip undergoes special spiral groove processing and tip quenching treatment, featuring high sharpness. It can directly penetrate hard materials such as stainless steel plates and aluminum alloys without pre-drilling, and complete tapping and locking simultaneously, saving construction time.Most of its surfaces are in natural color or treated with a wire-drawing process, which is suitable for various decoration styles. The specifications cover diameters from ST4.2 to ST6.3 and lengths from 13mm to 200mm. It is often used in scenarios such as curtain wall installation, equipment fixing, and outdoor metal structure connection, and customization is available.