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The screw length is defined as three types
2021-11-15 00:00
According to the purpose, the thread can be divided into two types: joint thread and drive thread. In the cross-sectional view, the inner and outer threaded joints are drawn by external threads, and t...
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What should I do if the door lock screw?
2021-11-15 00:00
I believe that everyone will encounter the door lock in life, sometimes it is necessary to replace it, the door lock screw is slippery or the screw hole is moving. What should I do? 1. Screw holes can...
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The most commonly used method for measuring hardness
2021-11-15 00:00
1. Strength Strength refers to the resistance of metal materials to damage (excessive plastic deformation or fracture) under static load. Since the action mode of the load is tensile, compression, ben...
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Causes of quality problems in combination screws
2021-11-15 00:00
With the rapid development of the industry, the application of combined screws has also become very widespread. Then, when customizing the combined screws, occasionally order the quality combined scre...
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The mechanical properties of metal materials are the main basis for the design
2021-11-15 00:00
The properties of metal materials are generally divided into two categories: process performance and performance. The so-called process performance refers to the performance of metal materials under t...
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Acrylic screw screw phosphate treatment
2021-11-15 00:00
We all know that wallboard nails (drywall nails) need to be phosphated, unlike other self-tapping screws. In order to standardize the operation of the screw phosphating process, to avoid the unqualifi...
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The threaded fit is the loose or tight size between the screw thread
2021-11-15 00:00
Inch uniform thread is widely used in inch countries. This type of thread is divided into three series: coarse tooth series UNC, fine tooth series UNF, extra fine tooth series UNFF, plus a fixed pitch...
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How to solve the problem of special screw flat tail?
2021-11-15 00:00
How to solve the problem of special screw flat tail? The general analysis has the following reasons. 1. The angle of the back angle of the screw velvet is too small, and the material is too much. In t...
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What are the commonly used fastener hardness indicators
2021-11-15 00:00
Hardness indicates the ability of a material to resist the intrusion of a hard object into its surface. It is one of the important performance indicators of metallic materials. Generally, the higher t...
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What is a combination screw and what are the uses of the combination screw?
2021-11-15 00:00
We sometimes use combination screws in our lives, but do you know anything about combination screws? Maybe people nowadays rarely understand the combination screw. If you don’t understand, you can rea...
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Metric threads have a cusp angle of 60 degrees
2021-11-15 00:00
GB—The national standard is one of many standards in China. There are also industry standards, professional standards and departmental standards. National standards are divided into: GB (mandatory sta...
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Reasons and solutions for locking of stainless steel screws
2021-11-15 00:00
The deflection angle of the thread fit and the softness of stainless steel can easily cause the lock of the stainless steel screw 1. The fit of stainless steel screw and stainless steel nut belongs to...
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Lizhan Hardware Co., Ltd. regards quality
first, honesty is the company's management,
customer first is our service philosophy, and
won praise and affirmation from customers.

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No.2 Yuanrun Park, DaiFeng Road , Wanghai town, Haiyan, Jiaxing City, Zhejiang （China Factory）. / 18 M.1 T.BANBUENG A.BANBUENG CHONBURI 20170 (Thailand Warehouse)
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