Non-Standard Knurled Nuts

Product introduction

The through-hole injection molded knurled nut is a highly efficient internally threaded fastener designed specifically for plastic parts. The knurled tooth pattern on its outer wall can be firmly embedded in the plastic during injection molding, forming excellent anti-rotation and pull-off properties. The "through hole" structure allows it to be installed through, making it easy to operate from both sides and simplifying mold design. This process combines the strength of metal nuts with the high efficiency of plastic injection molding to achieve high-strength, low-cost embedded connections.

 

Product parameters

Specifications: M12x39.5 M12x30

Material: 35k

Strength level: 8.8

Surface treatment: colored zinc plating

 

Product Features

1. Excellent torsion resistance and pull-off resistance: The refined knurling on the outer wall of the nut is completely wrapped by plastic during injection molding, forming a strong mechanical interlocking that can effectively resist rotation and axial pull-off forces, ensuring the reliability of the connection.

 

2. Through-hole design for easy operation and cleaning: The through-hole design allows threads to be accessed from both sides of the component, making installation and disassembly more flexible and convenient. At the same time, this also avoids the problem of blind holes that tend to retain impurities, making it easier to clean and vent.

 

3. Simplify the process and reduce costs: The "injection molding" process embeds the nut into the plastic part at one time, eliminating the need for secondary processing steps such as subsequent pressing or ultrasonic welding, significantly improving production efficiency and reducing overall manufacturing costs.

 

4. High connection strength and stable performance: The strength of metal nuts is perfectly combined with the convenience of plastic injection molding to provide strong and durable threaded connection points for plastic parts. The performance is far superior to tapping directly on plastic parts or using self-tapping screws.

 

5. Enhanced design freedom: Allows the design of strong threaded connections on the side walls of the plastic housing or in hard-to-reach locations, providing greater flexibility and freedom for product structural design.

 

6. Anti-loosening and anti-leakage: The close engagement between the knurled structure and the plastic has a good anti-loosening effect. At the same time, the plastic penetrates into the knurled gaps under high pressure to achieve effective sealing and prevent axial leakage.

 

Product application

1. Automotive industry: widely used in automotive interior parts, such as door panels, instrument panels, center consoles, armrest boxes, etc., for fixed panels, storage boxes or electronic equipment. Its high strength and vibration resistance ensure connection reliability in driving environments.

 

2. Home appliances: Clean and durable threaded connection points are provided on the plastic casings of home appliances such as washing machine control panels, air-conditioning outlets, microwave oven casings, coffee machines, and kettles to withstand frequent assembly and disassembly.

 

3. Electronic and communication equipment: Plastic casings commonly used in routers, switches, server cases and other equipment provide a solid threaded foundation for circuit board installation and panel fixing. At the same time, the through-hole design facilitates cable management and heat dissipation.

 

4. Medical devices: In medical device casings, handheld instruments and reusable medical containers, this nut can withstand repeated sterilization and cleaning and ensures a stable connection of key components, meeting the high requirements for reliability and hygiene of medical devices.

 

5. Consumer electronics and office equipment: such as printers, scanner casings and toys, etc. It enables efficient modular assembly of plastic parts and simplifies the production process.

 

FAQ

Q1: What is the main difference between this nut and the later riveted knurled nut?

A1: The main difference is the production process and connection strength.

This product: It is embedded simultaneously during the injection molding of plastic parts. The molten plastic flows into the knurled tooth pattern and forms a three-dimensional mechanical interlocking after cooling. The connection strength is extremely high.

Later riveting: Forcibly press in the formed plastic parts through pressure. The holding force is mainly generated by the elastic deformation of the plastic. The connection strength and pull-off resistance are relatively low.

 

Q2: What are the advantages of through-hole design compared to blind holes?

A2: Through-hole design has three main advantages:

1. Easy assembly: Allows screws to be screwed in from either side of the component, making assembly more flexible.

2. Conducive to mold exhaust: Prevent air from being trapped at the bottom of the nut during injection molding, causing defects such as lack of material or burning.

3. Easy to clean: Avoid leaving release agent or cutting fluid in blind holes.

 

Company Profile

We are a professional manufacturer focusing on the research, development and production of non-standard parts and special-shaped parts according to the specific needs of customers. We are proficient in comprehensive processes such as cold heading, turning, milling, CNC, stamping, and die-casting, and are good at solving application problems that cannot be met by standard parts. The core value lies in providing one-stop solutions from drawing optimization, material selection to precision machining. Manufacturers are deeply involved in the product design stage to ensure the functionality, economy and production feasibility of parts. Our products are widely used in aerospace, automobiles, communications, medical and high-end equipment and other fields. With flexible response speed and stable quality control, we have become a reliable R&D and manufacturing partner in the customer supply chain.

 

Choosing us means choosing an efficient, precise and tailor-made parts supply capability.

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