Both Bolts and Screws are common connection fasteners with similar threads that are widely used in many fields and equipment for connecting and fastening, this also is the main reason why many customers always mix them while purchasing. Now, here are several differences between bolts and screws that may help you choose the correct products. What…
There are many forms of bolt failure and most of them are related to installation and construction. However, at present, the common failure analysis is to send the failed bolts to a third party inspection agency. This article tells the common forms of bolt failure, causes analysis and precautions. 1. Fracture Causes Bolt Failure Overload FractureCause…
Hexagon bolts are widely used in the fastener industry. They have the advantages of high torque, simple structure, low cost and high cost performance. They are also the most used types of bolts in automobiles. Hexagon bolts can be divided into inner hexagon bolts and outer hexagon bolts. So what are the differences between these two types of hex bolts? Which one to…
Aerospace bolts are mainly used to transfer shear and tensile loads and widely applied in the places which bear large concentrated loads or parts that need to be disassembled on the airplane. What are the standards for bolts used in the aerospace industry? Firstly, we introduce the standards of bolt threads. What Are Standards Of Bolt Threads In The Aerospace Industry?…
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…
The quality of bolt assembly and the effectiveness of bolt tightening are important for the whole automobile assembly. In view of the analysis of the abnormal automotive bolt assembly, this article mainly tells the bolt tightening process during vehicle assembly and why it is important. Mechanical Analysis of Bolt Tightening In the process of bolt tightening, the bolt is stretched…
Bolts are widely used in all aspects of production and life. The bolt performance grade, namely the bolt performance grade for steel structure connection, is divided into more than 10 grades, such as 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9 and so on. The bolts of 8.8 grade and above are made of low carbon…
There are many commonly used bolt materials, such as carbon steel, stainless steel, copper and copper alloys, etc. This article mainly introduces the difference between carbon steel bolts and stainless steel bolts. 1. the Material is Different. The corrosion resistance of stainless steel decreases as the carbon content increases, so most stainless steels have a low…
The quality of bolts has a significant impact on the safety and reliability of the vehicle assembly. So how to select the bolts for vehicle assembly? What are the principles for selecting bolts? 1.The principle of priority The priority level of bolt selection is divided into four levels. When the design requirements are met, the standard parts…
There are three commonly used bolt locking methods, which include friction locking, mechanical locking and permanent locking. Permanent locking that is called non removable locking includes welding, riveting, bonding, etc, which usually destroys threaded fasteners during disassembly and can’t be reused. Common friction locking methods include washer, self-locking nut, double nut, etc. Here we introduce 8…
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