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The main purpose of heat treatment of fasteners
2021-11-15 00:00
The heat treatment of fasteners is a comprehensive process that puts the material in a certain medium for heating, heat preservation and cooling, and controls its performance by changing the surface o...
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Introduction to the production process of fasteners
2021-11-15 00:00
The coil element, also known as wire or coil material, is made by heating and rolling steel billets. (Hot-rolled wire rod cannot be used for the production of fasteners due to its size and surface qua...
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What are the materials used for common fasteners
2021-11-15 00:00
1. Bolts, studs, screws: Carbon steel is generally used for grades 3.6, 4.6, 4.8, 5.6, 5.8, and 6.8, and no heat treatment is required; Grades 8.8 and 9.8 are generally selected from low carbon alloy ...
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The marking of fasteners can be simplified
2021-11-15 00:00
Simplified marking of fasteners The marking of fasteners can be simplified according to the following simplification principles: 1) The age of fastener names and standard numbers are allowed to be omi...
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Marking method and complete marking of fasteners
2021-11-15 00:00
Thread fit is the size of looseness or tightness between screws threads. The level of fit is the prescribed combination of deviations and tolerances on internal and external threads. For unified inch ...
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Threads formed along one spiral are called single threads
2021-11-15 00:00
The diameter of the thread is divided into large diameter (D or d), small diameter (D1 or d1) and middle diameter. The large diameter of ordinary thread and ladder thread is also called the nominal di...
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The trapezoidal thread is a commonly used transmission thread
2021-11-15 00:00
On the section passing through the thread axis, the outline shape of the thread is called a thread profile. It has triangle type, ladder type, sawtooth type and square type, etc. Different thread toot...
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Threaded fasteners are manufactured according to a certain size
2021-11-15 00:00
A fastener refers to a part capable of performing a fastening function. Threaded fasteners refer to fasteners with threads, which are manufactured according to a certain size. It performs its basic fu...
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Common strength grades for carbon steel screws
2021-11-15 00:00
Specifications of American screws, such as 6 # -32 * 3/8, 6 # is the outer diameter of the tooth, which is close to 3.5mm; 32 is 32 teeth per inch of thread length (equivalent to the pitch of the metr...
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The parameters that need to be indicated for the description of the fastener
2021-11-15 00:00
Many people have unclear fastener descriptions. For example, some people want to buy some fasteners, but when they say what to buy, they don’t know how to describe the fasteners they want to buy. We a...
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Different grades of threaded fasteners
2021-11-15 00:00
First, the mechanical performance level China has provisions for bolts, screws and studs of different mechanical performance grades. Self-tapping screws and self-tapping screws Ordinary self-tapping s...
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Innovative fastener technology is the support of the development of fasteners
2021-11-15 00:00
Supernormal manufacturing With the expansion of people's living space, the rapid development of technology, the requirements for fasteners are getting higher and higher, the use of extremely large, ve...
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