Unique Knurled Copper Nut for Premium Decorative Flower Applications

• 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

Elevate your fastening solutions with our exquisite rolled copper nut, a marvel of engineering crafted from high-quality copper alloys like H62 brass and C3604 lead brass. Designed for precision, this nut features intricate straight and mesh patterned surfaces, offering exceptional conductivity, corrosion resistance, and secure anti-loosening capabilities. Ideal for diverse applications in electronics, machinery, and the automotive sector, this nut embodies pinnacle design logic.

1, Product Definition and Core Features

The rolled copper nut is an advanced fastener ingeniously crafted from copper alloy substrates such as H62 brass and C3604 lead brass, employing cutting-edge cold heading and meticulous machining techniques. The nut is adorned with sophisticated straight or mesh surface patterns, ensuring superior conductivity, unparalleled corrosion resistance, and definitive anti-loosening properties. Its versatility spans across electronics, machinery, and automotive industries, with a core design logic that truly stands out:

• Roll pattern structure: Through precise physical extrusion, meticulously crafted tooth-shaped patterns (depth 0.05-0.2mm) are engraved to significantly boost frictional resistance against the substrate;

Copper based characteristics: Harnessing the exceptional properties of copper, with its unrivaled conductivity (≥ 58MS/m) and steadfast corrosion resistance (passing salt spray tests ≥ 72h), this product is perfectly suited for precision equipment.

2, Technical parameters and structural analysis

1. Key Parameters [Table]
Explore the application scenarios of parameter standard value ranges
Material: Premium H62 brass (Cu62%, Zn38%) tailored for electronic device casings and communication modules, ensuring robust performance.
Hardness: An optimized hardness range of HB80-120 (annealed state), specifically designed for thin plate installations to prevent substrate crushing.
Thread specifications: Available in metric (M2-M10) and imperial (4-40UNC) standards, ideal for secure PCB board fastening and sensor bracket applications.
Roll pattern type: Choose from straight grain (120°) or mesh pattern (diamond cross) for exceptional anti-loosening in vibrational environments and robust shaft connections.
Surface treatment: Includes nickel plating (Ni ≥ 5 μm), passivation, and natural polishing techniques to prevent oxidation (nickel plating) and fulfill conductivity demands (natural color).

2. Structural innovation points

Double end embossing design: Ingeniously crafted, featuring an embossed end and a chamfered counterpart, harmonizing anti-loosening and guiding functions (e.g., M3 × 0.5 nuts, chamfered 15°);

Thin wall strengthening process: Employing advanced cold extrusion techniques, wall thickness is enhanced from 0.8mm to an impressive 1.2mm, bolstering torsional strength to ≥ 15N·m.

3, Application scenarios and selection logic

1. Typical application scenarios

Electronic devices: Securely fix phone frames to PCB boards with our M2 × 0.4 embossed copper nut, featuring nickel plating for long-lasting oxidation prevention.

Automotive industry: Ensure seamless connection between sensors and metal brackets using M4 × 0.7 mesh roller patterns, engineered for high-temperature resistance up to 150ºC.

Precision instrument: Enhance optical lens focusing rings with M2.5 × 0.45 straight line rolling techniques, boasting a low friction coefficient of ≤ 0.15.

2. Three step selection method

Step 1: Substrate matching

Soft plastic (e.g., PC): Opt for straight grain embossing and annealed state (hardness HB80) to prevent cracking and ensure structural integrity.

Metal substrate (e.g., aluminum alloy): Select mesh rolling and nickel plating to significantly enhance corrosion resistance and product longevity.

Step 2: Load verification

Static load: Enjoy peace of mind with a single M3 knurled copper nut tensile strength of ≥ 300N, backed by rigorous measured data.

Dynamic load: Rest assured, with no loosening after an extensive 2000 cycles of vibration testing (10-55Hz, 1.5mm amplitude), ensuring lasting reliability.