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Kunshan Hong Yong Sheng Precision Hardware Products Co.,Ltd mainly manufacture precision hardware parts and accessories. Factory direct.
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Non-Standard Screws Manufacturers

Non-standard screws, these special fasteners, are different from industry standard screws. Their uniqueness is reflected in unique sizes, shapes and materials, allowing them to meet a range of non-traditional application requirements. When faced with non-standard, customized or special joining tasks, non-standard screws become your ideal solution. Whether you need to connect non-standard size components in home decoration, or need to adapt to the assembly needs of complex mechanical systems in mechanical manufacturing, non-standard screws can provide flexibility and reliability. The design and production of these screws are carefully planned so that they perform well in a variety of application scenarios. Whether facing high temperature, high pressure or harsh environmental conditions, non-standard screws can provide stable connection effects, allowing your equipment to operate safely and stably. We can customize production according to specific needs to meet your needs in various fields.

About
Kunshan Hong Yong Sheng Precision Hardware Products Co.,Ltd.
Kunshan Hong Yongsheng Precision Hardware Products Co., Ltd. was established in September 2006, is a professional China Non-Standard Screws manufacturer and Non-Standard Screws suppliers, the production of various types of precision parts, PEM series of standard fasteners, non-standard parts of the custom enterprise, the company's production equipment imported from Japan CNC computer numerically-controlled lathes, Taiwan CAM walking knife type high-precision automatic lathes, and various types of auxiliary equipment, precision testing equipment, totaling more than 100 units, monthly output of up to 5 million pieces. Our products are used in many fields such as electronic communications, computer monitors and chassis, automotive parts, 3C household appliances, medical equipment, pneumatic machinery, sports equipment, furniture, lighting, aerospace, military, photovoltaic, intelligent industry and so on, and we have the technical ability to develop new products.
The company has obtained two quality system management certificates of ISO9001:2015 and IATF16949:2016.
At present, the company has been for Japan, Sweden, the United States, Singapore, Malaysia, Hong Kong and the Pearl River Delta and many other customers to provide services, now the main customers are: Japan Sharp (SHARP), Japan SMC, Japan Panasonic (Panasonic), the Swedish automobile VOVOL, etc., all the fixed assets investment of more than 30 million dollars, welcome friends from all walks of life to the factory to visit, study, consulting and come! We welcome friends from all walks of life to visit our factory, investigate, consult and come to us for sample processing.
We are looking forward to establishing a good business partnership with you with mutual trust and reciprocity!
Certificate Of Honor
  • IATF16949:2016
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Non-Standard Screws Industry knowledge

How to control dimensional tolerances during the manufacturing process of non-standard screws?

Controlling dimensional tolerances during the manufacturing process of non-standard screws is a key step to ensure product quality and functionality. The following are detailed answers to several key aspects:

Precision machining technology: The manufacture of non-standard screws usually uses precision machining technology, such as numerical control lathes (CNC), precision grinders or wire cutting, etc., to achieve high-precision dimensional control. These technologies allow for precise control of critical dimensions such as screw diameter, length, thread spacing, etc. to meet specific tolerance requirements.

Material Selection and Processing: Selecting the appropriate material is critical to controlling dimensional tolerances, as the work hardening rate, thermal expansion coefficient, and shrinkage rate of different materials can affect the dimensional stability of the final product. The heat treatment process of materials, such as annealing, normalizing or quenching, can improve the processing properties of materials and reduce deformation during processing.

Mold design: For non-standard screws manufactured by cold heading or hot heading processes, the design accuracy of the mold directly affects the dimensional tolerance of the product. Using high-precision mold manufacturing equipment and strict mold acceptance standards can ensure the dimensional accuracy of the mold, thereby improving the dimensional consistency of non-standard screws.

Online detection and feedback system: During the production process, real-time online detection can detect dimensional deviations in time and quickly adjust processing parameters to maintain dimensional tolerances. Automated quality control systems, such as machines with automatic feedback adjustments, can reduce the impact of human factors on dimensional control.

Optimization of process parameters: By optimizing processing process parameters, such as cutting speed, feed speed, coolant use, etc., dimensional deviations during the processing can be reduced. For thread processing, selecting the appropriate tool and tool angle, and optimizing the cutting path are important measures to control dimensional tolerances.

Environmental control: Temperature and humidity control of the manufacturing environment is critical to maintaining the thermal stability of materials and processing equipment, which directly affects the control of dimensional tolerances. Temperature fluctuations can cause thermal expansion or contraction of materials and machines, affecting machining accuracy.

Quality management system: Implement strict quality management systems, such as ISO 9001, etc., to ensure that the entire production process meets the prescribed quality standards. Regular quality audits and a continuous improvement process can help identify and resolve issues affecting dimensional tolerances.

Through the comprehensive application of the above measures, the dimensional tolerances in the manufacturing process of non-standard screws can be effectively controlled to ensure that product quality meets the strict requirements of customers and applications.

How to design to improve the self-locking performance of non-standard screws?

Improving the self-locking performance of non-standard screws is key to ensuring that they remain tight under vibration or dynamic loading conditions. The following is a detailed explanation of several key design strategies:

Thread design optimization: The thread is the core part of the self-locking performance of the screw. By optimizing the geometry of the thread, the self-locking performance can be significantly improved. For example, increasing the helix angle of the thread can reduce the tendency of the screw to spin during tightening, thereby improving the self-locking performance. In addition, the use of specially shaped threads, such as Torx® or Splines, can provide a larger friction contact area and enhance the self-locking effect.

Material selection and surface treatment: The friction coefficient of the material directly affects the self-locking performance of the screw. Choosing materials with a high coefficient of friction, such as certain alloys or stainless steel with specially treated surfaces, can increase the friction between the screw and the nut or hole. In addition, surface treatment techniques such as phosphating, nitriding or coatings (such as nylon coating) can further increase the friction coefficient of the thread, thereby improving self-locking performance.

Head design improvement: The design of the screw head also has an important impact on the self-locking performance. Designing special head shapes, such as heads with anti-slip textures or grooves, can increase the friction between the head and the tool, reduce sliding during the tightening process, and improve self-locking performance.

Anti-loosening design of the drive system: Using a drive system with anti-loosening properties, such as anti-loosening grooves or specially shaped drive heads, can improve the self-locking performance of the fastening system. These designs prevent the screws from loosening due to vibration after tightening.

Structural design innovation: Designing special structures on the threaded part of the screw, such as spiral grooves or grooves, can increase the contact area between the thread and the mating part and improve the self-locking performance. These structural designs can reduce the tendency of screws to rotate when tightened.

Heat treatment and mechanical properties: Proper heat treatment can improve the hardness and strength of the screw material, thereby improving the self-locking performance. For example, quenching and tempering treatments can enhance the wear resistance and deformation resistance of screws, which is crucial to improving self-locking performance.

Precise control of preload: Controlling the appropriate preload is critical to self-locking performance. Too tight or too loose may cause the screws to loosen. By precisely controlling the pre-tightening force, the stability of the screw in the tightened state can be ensured.

Through the comprehensive application of the above design strategies, the self-locking performance of non-standard screws can be significantly improved to ensure their reliability and safety in various application environments.