Hex lag screw
wood screw
Hex head screw
Contact Us
Haiyan Tianqi Fastener Co., Ltd.
  • Add:Jiaxing Haiyan China NO.1-3 Jincheng South road, Qinshan Industrial Zone of Haiyan, Jiaxing
  • Tel:+86-573-86408971
  • Mobile Phone:+86-13606831322
  • Fax:+86-86408973
  • E-mail:472660558@qq.com
  • Post Code:314300
  • Skype:tianqi

What are the reasons for the rust of self-tapping screws?

2021-04-13

What are the reasons for the rust of self-tapping screws?
1. If the surface of the self-tapping screw accumulates dust containing other metal elements or attachments of foreign metal particles, the condensed water between the attachments and stainless steel will be connected into a micro battery in the humid air, making the protective film The self-tapping screw is rusted due to damage;
2. In polluted air (such as the atmosphere containing a lot of sulfide, carbon oxide, and nitrogen oxide), self-tapping screw manufacturers tell you that self-tapping screws will form sulfuric acid, nitric acid, and acetic acid liquid spots when they meet with condensed water, causing chemical corrosion ;
3. The self-tapping screw itself contains nickel and other trace elements, which will rust over time.
4. The self-tapping screw manufacturer will explain to you that if self-tapping screws encounter acid, alkali, and salt substances (such as alkaline water and lime water splashing on the decoration wall), they will cause local corrosion and cause local rust.
Self-tapping screws generally refer to pointed, coarse-tooth, and hard-textured wood screws, as well as aluminum alloys and plastics. Some of them will not be screwed when installed. The self-tapping screw manufacturers will tell you the solution.
1. Spray some spray lubricating oil, and then use a torx wrench to unscrew it.
2. The self-tapping screw manufacturer tells you that you can use professional tools to open the self-tapping screw installed in the machine. The key is to master some basic methods;
3. Master the strength of the opening. If the force is too large, the contents of the self-tapping screw will be damaged. If it is too small, the self-tapping screw will not be able to be screwed. Therefore, the self-tapping screw manufacturer warmly reminds you that you need to master the skills to unscrew it. Master the force evenly
The self-tapping screw manufacturer tells you that the self-tapping screw can be used on the material to be consolidated, relying on its own threads, to "tap-drill, squeeze, and press" the consolidated body to produce the corresponding threads, so that they can be closely matched with each other.

Home   |    About us   |    Products   |    News   |    Technical support   |    Certificates   |    Contact us    |    Hexagon Washer Head Wood Screws