Elegant Knurled Copper Nut for Stylish Construction and Manufacturing 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

Elevate your construction and manufacturing endeavors with our rolled copper nut, a pinnacle of engineering excellence.

1, Product Definition and Core Features

The rolled copper nut, a remarkable fastener, is crafted from premium copper alloys such as H62 brass and C3604 lead brass. Expertly formed through cold heading and machining, it boasts a meticulously rolled surface with straight or mesh patterns. This innovative nut offers unparalleled conductivity, superior corrosion resistance, and a robust anti-loosening function, making it indispensable in electronics, machinery, and automotive sectors. The core design is ingeniously crafted to ensure:

• Roll pattern structure: Through precise physical extrusion, tooth-shaped patterns with depths ranging from 0.05 to 0.2mm are meticulously crafted to significantly enhance frictional resistance with the substrate.

Copper based characteristics: Harnessing the high conductivity (≥ 58MS/m) and corrosion resistance (with a remarkable salt spray test endurance of ≥ 72h), copper proves to be the material of choice for precision equipment.

2, Technical parameters and structural analysis

1. Key Parameters [Table]
Discover the application scenarios of parameter standard value ranges tailored to meet diverse needs.
Material H62 brass (Cu62%, Zn38%) serves as an ideal choice for electronic device casings and communication modules, known for its exceptional properties.
Hardness HB80-120 (annealed state) offers a delicate balance for thin plate installations, expertly avoiding substrate damage.
Thread specifications M2-M10 (metric) and 4-40UNC (imperial) ensure reliable PCB board fixing and sensor bracket securement.
Roll pattern type: Choose from straight grain (120 °) or mesh pattern (diamond cross) for optimal anti-loosening in vibration environments or shaft connections.
Surface treatment options, including nickel plating (Ni ≥ 5 μ m), passivation, and natural polishing, provide oxidation prevention and meet conductivity requirements effectively.

2. Structural innovation points

Double end embossing design ingeniously balances anti-loosening and guiding functions with one end embossed and the other chamfered (e.g., M3 × 0.5 nuts, chamfered 15 °).

Thin wall strengthening process: Through precise cold extrusion, wall thickness is enhanced from conventional 0.8mm to 1.2mm, significantly boosting torsional strength to ≥ 15N · m.

3, Application scenarios and selection logic

1. Typical application scenarios

Electronic devices: Securely fix phone frames to PCB boards using M2 × 0.4 embossed copper nuts, with nickel plating ensuring excellent oxidation resistance.

Automotive industry: Achieve robust connections between sensors and metal brackets using M4 × 0.7 mesh roller patterns, enduring high temperatures up to 150 ºC.

Precision instrument: Opt for M2.5 × 0.45 straight line rolling for optical lens focusing rings, ensuring a low friction coefficient ≤ 0.15.

2. Three step selection method

Step 1: Substrate matching

For soft plastics like PC, select straight grain embossing with an annealed state hardness of HB80 to prevent cracking.

For metal substrates like aluminum alloy, opt for mesh rolling and nickel plating to significantly enhance corrosion resistance.

Step 2: Load verification

Static load: Achieve impressive tensile strength with a single M3 knurled copper nut, sustaining loads ≥ 300N, as verified by measured data.

Dynamic load: Ensure reliability with no loosening after enduring 2000 cycles of rigorous vibration testing (10-55Hz, 1.5mm amplitude).