The torque test can determine the breaking torque, and it is mainly suitable for bolts and screws that cannot be tested for tensile tests. Note: Breaking torque is the torque at which the screw is sheared. What is a Torque Testing Machine? The torsion testing machine is used to measure the mechanical properties of metal…
Bolts are widely used in various industries and can be seen everywhere, so do you know the meaning of the grade marking on the bolts and screw thread? What Are the Performance Grades of Bolts The performance grade of bolts for steel structure connection can be divided into more than 10 grades, such as 3.6, 4.6,…
During routine inspection of threads, the general thread gauge cannot pass freely after surface coating treatment due to defects such as bumping on the surface of threads, such as electroplating and dacromet treatment, and butterfly threads cannot pass normally. Sometimes, the ring gauge can pass only after a certain amount of screwing torque is applied….
Whether it is furniture assembly or electrical assembly, it needs the help of screws to make them closely combined. The fixation effect of the hexagon socket head cap screws is good, and the applications is relatively wide. So what are the functions and advantages of hexagon socket head cap screws? Firstly, let’s learn what it is?…
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…
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