Artistic Copper Flower Nut with True Color for Customization Support

• Customization: Available
• Material: Brass
• Type: Round Head
• Model NO.: 1-1
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN
• Grade: 4.8
• Applicable Industries: Construction, Manufacturing
• Surface Treatment: True Color
• Whether to Support Customization: Support
• After-Sales: Three Months
• Transport Package: Container Loading
• Specification: 1-30
• Trademark: Huilin
• Origin: Handan, Hebei
• HS Code: 0101101010
• Production Capacity: 50000

Product Description

Description of Rolled Copper Nut

1, Product Definition and Core Features

The rolled copper nut is a high-quality fastener crafted from robust copper alloys such as H62 brass and C3604 lead brass. Using precision cold heading and machining techniques, these nuts boast exquisite straight or mesh-patterned surfaces. Their inherent conductivity and superior corrosion resistance make them essential in electronics, machinery, and automobile sectors. The core design principles include:

• Roll Pattern Structure: Through meticulous physical extrusion, intricate tooth-shaped patterns are etched onto the surface, with depths ranging from 0.05 to 0.2mm. These patterns significantly enhance frictional resistance with the substrate.

Copper Based Characteristics: Leveraging copper's remarkable conductivity (≥ 58MS/m) alongside its excellent corrosion resistance (tested with salt spray for ≥ 72 hours), these nuts are ideal for precision equipment applications.

2, Technical Parameters and Structural Analysis

1. Key Parameters [Table]
Application Scenarios of Parameter Standard Value Range
Material: H62 brass composition (Cu62%, Zn38%), perfect for electronic device casings and communication modules.
Hardness: With an HB range of 80-120 in the annealed state, these are optimal for thin plate installations to prevent substrate damage.
Thread Specifications: Available in M2-M10 (metric) and 4-40UNC (imperial) standards, making them adaptable for PCB board fixation and sensor brackets.
Roll Pattern Type: Features options such as straight grain at 120°, mesh patterns, and diamond cross designs. These ensure anti-loosening in vibration settings and secure shaft connections.
Surface Treatment: Choose from nickel plating (with Ni ≥ 5 μm), passivation, or natural polishing. These treatments cater to oxidation prevention and meet conductivity needs through a natural finish.

2. Structural Innovation Points

Double End Embossing Design: One end is meticulously embossed while the other is chamfered, striking a perfect balance between anti-loosening and guiding functions, exemplified in M3 × 0.5 nuts with a 15° chamfer.

Thin Wall Strengthening Process: Through advanced cold extrusion techniques, wall thickness is enhanced from a conventional 0.8mm to a robust 1.2mm, boosting torsional strength to ≥ 15N·m.

3, Application Scenarios and Selection Logic

1. Typical Application Scenarios

Electronic Devices: Securely fasten phone frames to PCB boards using M2 × 0.4 embossed copper nuts, with nickel plating ensuring oxidation prevention.

Automotive Industry: Perfect for connecting sensors to metal brackets, utilizing M4 × 0.7 mesh roller patterns, designed to withstand high temperatures up to 150 ºC.

Precision Instrument: Ideal for optical lens focusing rings, with M2.5 × 0.45 straight line rolling, ensuring a low friction coefficient of ≤ 0.15.

2. Three Step Selection Method

Step 1: Substrate Matching

For Soft Plastic (like PC): Opt for straight grain embossing in an annealed state with hardness HB80 to prevent cracking.

For Metal Substrates (such as aluminum alloy): Choose mesh rolling paired with nickel plating to enhance corrosion resistance.

Step 2: Load Verification

Static Load: Ensures the tensile strength of a single M3 knurled copper nut is no less than 300N, based on tested data.

Dynamic Load: Demonstrates resilience with no loosening after 2000 cycles of rigorous vibration testing (at 10-55Hz, 1.5mm amplitude).