Non-Standard Nuts

The knurled nut is a type of fastener with an anti-slip texture on its surface. It features a vertical knurling design, with uniform straight lines formed by precision rolling around the circumference, providing excellent grip and manual operability. It is often used in situations where it can be tightened by hand without tools, such as instrument panels, adjustment knobs, and electronic devices. The vertical knurling texture is clear and combines both aesthetics and anti-slip functionality. The material is mostly stainless steel, copper or carbon steel, and can be surface treated with nickel plating or blackening to enhance corrosion resistance. It comes in various specifications and supports non-standard customization to meet different assembly requirements.

Product Features:

1. Anti-slip and easy to operate: The surface is precisely embossed with vertical lines, increasing friction and allowing for easy manual tightening or loosening without tools.

2. Stable and anti-loosening: The embossed texture enhances the grip with the contact surface, preventing slippage and is suitable for use in vibrating environments where tightness is required.

3. Aesthetic and durable: The lines are neat and uniform, combining industrial beauty; materials can be selected from stainless steel, carbon steel or copper, and the surface can be nickel-plated, zinc-plated or blackened to enhance corrosion resistance.

4. Widely applicable: Commonly used in instruments, electronic devices, mechanical adjustment components and other places that require manual adjustment.

5. Flexible customization: Supports customization of different specifications (such as M3-M12), embossing intervals and special materials to meet diverse needs.

Product Applications:

1. Electronic and Electrical Equipment

3C Electronic Products: Such as laptops, mobile phones, routers, etc. The plastic shells are fixed with knurled copper nuts embedded through hot melt or injection molding, providing a stable connection.

Power Tools: Used for the fastening of internal structural components. The knurled design facilitates manual adjustment.

2. Mechanical Equipment

Packaging Machinery, Textile Machinery: Used in areas that require frequent adjustment or maintenance, allowing for easy manual operation.

Instruments and Meters: Such as adjustment knobs, panel fixation. Knurled nuts provide a good hand-tightening experience.

3. Automotive and Transportation Equipment

Automotive Interior and Electronic Components: Such as car lamp heat sinks, sensor fixation. Some adopt the standard of embedded knurled copper nuts (e.g., T/ZZB3669—2024).

New Energy Vehicles: Used for the connection of high-voltage distribution boxes (PDU), motor brackets, and other components.

4. Household Appliances and Consumer Products

Household Appliance Plastic Shells: Such as air conditioners, washing machines, etc. Knurled nuts are used to enhance the structural strength of plastic parts.

Digital Product Accessories: Such as GPS devices, smart home appliance shells fixation.

5. Other Industrial Fields

Shelves, Cabinets: Used in situations that require manual fastening.

Medical Equipment: Some components that need anti-slip adjustment adopt the knurled nut design.

Product advantages:

High vibration resistance and anti-loosening: Enhances bite force, the rolling pattern forms mechanical interlocking with the contact surface, reducing the risk of loosening caused by vibration. Suitable for dynamic environments such as motors, automobiles, and mechanical equipment, ensuring stable connection, especially suitable for fastening with low-strength materials like plastics and thin plates, avoiding tooth slippage.

Flexible and convenient installation: Supports multiple assembly methods, including press riveting, hot melting, injection molding pre-burial, or direct screwing. Compatible with different substrates such as metals and plastics, saving time, manual installation can be completed, reducing reliance on tools, and lowering assembly costs.

FAQ

Q1: What are the differences between knurled nuts and regular nuts?

A1: Knurled nuts: The surface has anti-slip patterns (vertical lines/reticular patterns), making them easy to tighten by hand without the need for tools, and suitable for occasions requiring frequent adjustment or maintenance. Regular nuts: The surface is smooth and require the use of a wrench or socket to install, suitable for high-strength fastening, but inconvenient to operate manually.

Q2: How can one distinguish the quality of knurled nuts?

A2: Quality features: The pattern is clear and uniform, without burrs, the material conforms to the specification (such as 304 stainless steel), the thread accuracy is high, and it rotates smoothly.

Poor quality manifestations: The knurling is rough, prone to scratching the hand, the coating peels off or rusts, the thread is skewed, and it is difficult to screw in.

Q3: What are the common failure causes of knurled nuts?

A3: Overload: Damage to the threads occurs when the torque exceeds the rated value. Corrosion: The material is not resistant to environmental media (such as acid, salt fog). Installation errors, such as excessively high heating temperature causing plastic deformation.

Q4: Can non-standard knurled nuts be customized?

A4: Customization is supported, including special sizes (such as raised type), knurled types (coarse/finer lines), and surface treatments (such as gold plating, passivation), etc.