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Injection Molded Copper Knurled Thumb Through Hole Nut

Knurled injection nuts, also known as knurled lock nuts or knurled thread nuts, are a specialized type of fastener that combines the features of injection molding with a knurled surface.
  • Nut

  • ARIDA

  • 7318159090

  • CNC machining center

  • Stainless Steel

  • Fastener

  • Cold Forging

  • High Rigidity and Precision

  • ISO, GS, RoHS, CE

  • One year

  • Forging

  • Standard exporting package

  • ARIDA

  • China

  • CNC precision

  • New

  • Motor

  • Worldwide

  • yes

  • CNC

Availability:
Quantity:
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Prameters
滚花螺母图纸


Specification M2 M2.5 M3 M4 M5 M6 M8
Thread inner diameter(d) 2 2.5 3 4 5 6 8
screw pitch(p) 0.4 0.45 0.5 0.7 0.8 1 1.25
outer diameter(dk) 3.5 3.5 4.3 5.5 7 8 10
thread groove width(k) 1.3-3.5 1.5-4 1.2-6 0.4-6.6 0.8-2 1-2.8 1.4-2.3



Design and Features
  • Injection Molding: Injection nuts are typically made by injecting molten plastic or resin into a mold that contains a metal insert, such as a hexagonal nut.

  • Materials: The outer shell is usually made of thermoplastic materials, while the inner nut is made of metal (such as steel, brass, or stainless steel).

  • Shape: The outer shape can vary, but the internal nut is usually hexagonal to accommodate a wrench or socket.

  • Sizes: Injection nuts come in various sizes to match different bolt diameters and thread pitches

Applications
  • Sheet Metal: Injection nuts are commonly used in sheet metal applications where a nut needs to be securely embedded in the material.

  • Plastic Panels: They are also used in plastic panels, where the plastic material of the nut bonds with the surrounding plastic substrate.

  • Automotive Industry: Injection nuts are used in automotive applications, such as attaching interior trim pieces or exterior body panels.

  • Furniture: They are used in furniture assembly, where a strong and permanent attachment point is required.

Sample Display
注塑螺母2
注塑螺母4
滚花铜螺母
Considerations

Material Considerations

1. Copper Alloy Selection

  • Conductivity: Copper and its alloys are chosen for their high electrical and thermal conductivity. Ensure the specific alloy selected meets the conductivity requirements of the application.

  • Strength: Different copper alloys have varying strengths. For instance, brass (an alloy of copper and zinc) is stronger than pure copper but may not have the same conductivity.

  • Corrosion Resistance: Certain copper alloys offer better corrosion resistance than others, which is crucial for applications in harsh environments.

Design Considerations

2. Knurling

  • Grip Enhancement: The knurling pattern improves the grip of the nut, making it easier to turn with the fingers.

  • Custom Patterns: Different knurling patterns can be selected based on the required grip strength and aesthetic preferences.

3. Thumb Through-Hole

  • Accessibility: The through-hole design allows for easier handling and installation, especially in tight spaces.

  • Tool Compatibility: Ensure the hole diameter is compatible with any tools or fixtures used for installation.

4. Injection Molding Process

  • Part Complexity: Injection molding can produce intricate shapes, but the complexity of the design affects mold cost and cycle time.

  • Surface Finish: The molding process can produce a smooth surface finish, but post-processing steps may be required to achieve a specific finish.

Functional Considerations

5. Thread Integrity

  • Quality Control: Ensure the threads are accurately formed to prevent stripping or cross-threading during installation.

  • Thread Locking: Depending on the application, thread locking mechanisms may be necessary to prevent loosening under vibration.

6. Torque Requirements

  • Torque Specifications: Determine the appropriate torque settings for installation to avoid over-tightening, which could strip the threads or damage the nut.

  • Consistency: Maintain consistent torque application across multiple installations to ensure uniform tightening.

Environmental Considerations

7. Temperature and Humidity

  • Operational Range: Verify that the copper alloy used can withstand the operational temperature range of the application.

  • Moisture Resistance: In humid environments, consider coatings or finishes that enhance corrosion resistance.

8. Chemical Exposure

  • Resistance to Chemicals: If the component will be exposed to chemicals, select a copper alloy that is resistant to those specific chemicals.

Manufacturing Considerations

9. Tooling and Molds

  • Mold Design: The design of the injection mold is critical to the quality and consistency of the produced nuts.

  • Mold Maintenance: Regular maintenance of molds is necessary to prevent defects in the parts.

10. Quality Assurance

  • Inspection: Implement rigorous inspection protocols to catch any defects early in the production process.

  • Certifications: Ensure compliance with relevant industry standards and certifications, such as ISO standards.


Advantages
  • Secure Attachment: The injection process ensures a strong bond between the nut and the surrounding material, providing a secure attachment point.

  • Durability: The combination of plastic and metal provides good durability and resistance to corrosion.

  • Easy Installation: Injection nuts can be easily installed using various methods, such as heat staking or ultrasonic welding.

  • Cost-Effective: They are often more cost-effective than alternative fastening methods, especially for mass-produced items.

Customer Review


Customer Review
A
  • "These injection knurled nuts are incredibly durable. We've been using them in our automotive applications, and they've held up exceptionally well under various conditions."

B
  • "The nuts fit perfectly every time. The knurling ensures a snug fit without the need for additional adhesives."

C
  • "The knurling really does its job. We haven't had any issues with nuts coming loose over time."

D
  • "The design of the nuts is sleek and modern, which complements the overall appearance of our products."

E
  • "The quality of the finish is impressive. The knurling on the outer surface provides a secure grip, and the metal nut inside is sturdy."



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