For a long time, in the inspection and measurement of thread, the judgment of thread qualification is controversial, and the standards of different countries are not uniform. The provisions of American standards are more systematic and detailed: ASME B13M-2007 “Thread Measurement Methods for Qualification of Inch and Metric Threads (UN, UNR, UNJ, M, and MJ)”…
Screws are essential in the manufacturing industry. They are widely used everywhere ranging from small products such as glasses, to large products like cars, aircraft, rockets. Here, we introduce some useful knowledge about screws and the effective methods to prevent them loosening. Basic useful knowledge about screws Screws The rod of screws should have external thread….
What is the difference between brass screws and bronze screws? What are their advantages and what industries are they applied to? Let’s first understand the difference between brass and bronze materials, and then identify the difference between brass screws and bronze screws from the material. What is brass material and bronze material? How are they…
Screws are colorful. Screw fasteners with various colors, such as silver, black, yellow, purple, etc, have been seen everywhere. So how are these screws be made so colorful? Screw plating is a process to bring bright colors to screw fasteners and making them beautiful Screw plating adopted for colorful products When the screw has just been produced, it is very oily and dirty. At…
The abrasive blasting process is to use compressed gas to spray blasting materials onto the surface of the workpiece by means of high-speed air pressure (commonly used blasting materials include copper ore sand, quartz sand, emery, iron sand, Hainan sand, etc.) Under the impact and cutting of the spray material on the surface of the…
First of all, We Need to Understand What is a Self-Tapping Screw. In most cases, self-tapping screws are used for the connection between thin metal plates such as steel plates and saw blades. When connecting, first make a threaded bottom hole for the connected piece, and then screw the self-tapping screw into the threaded bottom…
This article will introduce the different types of screw heads and the differences between them to help you learn more about screws. Pan Head Screws Pan head screws are divided into a slotted head type and a cross groove. If an electric screwdriver is used, the cross groove is generally selected. Pan head screws for plastic\wood\metal…
Cylindrical head socket screws, also referred to as socket head bolts, cup head screws, and socket head screws. Although they have different names, but have the same meaning. There are also 4.8, 8.8, 10.9, and 12.9 commonly used hexagon socket head screws. It is also called a hexagon socket screw and hexagon socket bolt. Its…
What is screw thread? Screw Thread refers to a continuously raised portion of a helical shape and of a specific cross-section made on the surface of a cylindrical or conical base. Classification of screw thread: Screw threads can be divided into cylindrical threads and conical threads according to their parent shape. According to its position…
Surface treatment is a process method, which refers to the artificial formation of a surface layer on the surface of the substrate material with different mechanical, physical, and chemical properties from the substrate. The purpose of surface treatment is to meet the requirements of product wear resistance, corrosion resistance, decoration, and so on. In the…
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