Decorative Copper Flower Nut with Knurled Finish for Unique Projects

• 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

Discover the exceptional qualities of our Rolled Copper Nut, a distinguished fastener designed to elevate your projects with its unique attributes and impeccable performance.

1, Product Definition and Core Features

The Rolled Copper Nut is an innovative fastener crafted from high-quality copper alloy, such as the esteemed H62 brass or C3604 lead brass. These materials are selected for their superior conductivity and durability. Meticulously formed through a process of cold heading and precision machining, the surface of these nuts is adorned with intricate straight or mesh patterns, enhancing their grip and anti-loosening capabilities. They excel in various demanding industries, including electronics, machinery, and automobiles, and are ingeniously designed to provide:

• Ingenious Roll Pattern Structure: Through the art of physical extrusion, tooth-shaped patterns with a depth ranging from 0.05-0.2mm are meticulously crafted, boosting frictional resistance with the substrate and ensuring a steadfast hold.

Copper Based Excellence: Leveraging the inherent conductivity of copper (≥ 58MS/m) and its formidable resistance to corrosion (proven by salt spray tests lasting ≥ 72h), these nuts are ideally suited for integration into precision equipment.

2, Technical parameters and structural analysis

1. Key Parameters [Table]
Application scenarios of parameter standard value range
Material H62 brass (Cu62%, Zn38%): A perfect choice for electronic device casings and communication modules, ensuring durability and performance.
Hardness HB80-120 (annealed state): Ideal for thin plate installations, this range prevents substrate damage while maintaining integrity.
Thread specifications M2-M10 (metric), 4-40UNC (imperial): Versatile sizes for diverse applications, from securing PCB boards to stabilizing sensor brackets.
Roll Pattern Type: Select from straight grain (120°) or mesh pattern (diamond cross) to suit environments requiring anti-loosening for shaft connections.
Advanced Surface Treatment: Options include nickel plating (Ni ≥ 5 μm), passivation, and natural polishing, each tailored for oxidation resistance and conductivity enhancement.

2. Structural innovation points

Double End Embossing Design: Featuring one embossed end and a chamfered opposite end, this design masterfully balances anti-loosening properties and guiding functions, exemplified by M3 × 0.5 nuts with a 15° chamfer.

Thin Wall Strengthening Process: Utilizing cold extrusion, the wall thickness is enhanced from a conventional 0.8mm to 1.2mm, significantly bolstering torsional strength to an impressive ≥ 15N·m.

3, Application scenarios and selection logic

1. Typical application scenarios

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

Automotive Industry: Perfect for connecting sensors to metal brackets, the M4 × 0.7 mesh roller pattern withstands high temperatures up to 150 ºC.

Precision Instrumentation: The optical lens focusing ring benefits from M2.5 × 0.45 straight line rolling with a low friction coefficient of ≤ 0.15.

2. Three-step selection method

Step 1: Substrate Matching

For Soft Plastics like PC: Opt for straight grain embossing and annealed state (hardness HB80) to prevent material cracking and ensure a secure fit.

For Metal Substrates such as Aluminum Alloy: Choose mesh rolling with nickel plating to significantly enhance corrosion resistance for a longer-lasting solution.

Step 2: Load Verification

Static Load: Confirm the robust tensile strength of a single M3 knurled copper nut, guaranteed at ≥ 300N, as per measured data.

Dynamic Load: Experience peace of mind with no loosening after enduring 2000 cycles of rigorous vibration testing (10-55Hz, 1.5mm amplitude), ensuring reliability in dynamic environments.