Sleek Knurled Copper Nut for Construction and Decorative Flower Uses

• 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 exquisite craftsmanship of our Rolled Copper Nut, designed for superior performance and elegance.

1, Product Definition and Core Features

The Rolled Copper Nut is a masterfully engineered fastener, crafted from premium copper alloys like H62 brass and C3604 lead brass. Through precision cold heading and meticulous machining, it achieves a flawless form, further enhanced by the intricate straight and mesh patterns rolled on its surface. Renowned for its excellent conductivity, robust corrosion resistance, and reliable anti-loosening properties, this nut is a versatile asset in electronics, machinery, and automotive sectors. The core design logic encapsulates:

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

Copper based characteristics: This product harnesses the exceptional conductivity of copper (≥ 58MS/m) and its unrivaled corrosion resistance (endures salt spray test ≥ 72h) to excel in precision equipment applications.

2, Technical parameters and structural analysis

1. Key Parameters [Table]
Explore varied application scenarios within the parameter standard value range.
Material composition: H62 brass (Cu62%, Zn38%), ideal for electronic device casing and communication modules.
Hardness rating: HB80-120 (in annealed state), perfect for thin plate installations to prevent substrate damage.
Thread specifications: Available in M2-M10 (metric) and 4-40UNC (imperial) for secure PCB board attachment and sensor bracket mounting.
Roll pattern type: Choose from straight grain (120 °) or mesh pattern (diamond cross) to ensure anti-loosening in vibrating environments and robust shaft connections.
Surface treatment options include nickel plating (Ni ≥ 5 μm) for superior oxidation prevention, passivation, or natural polishing for optimal conductivity and a pristine natural finish.

2. Structural innovation points

Double end embossing design: Featuring an embossed end and a chamfered end, it perfectly balances anti-loosening and guiding capabilities (such as M3 × 0.5 nuts, chamfered at 15 °).

Thin wall strengthening process: Utilizing advanced cold extrusion techniques, the wall thickness is effectively increased from a standard 0.8mm to an enhanced 1.2mm, dramatically 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 for reliable oxidation prevention.

Automotive industry: Ensure stable connections between sensors and metal brackets with M4 × 0.7 mesh roller patterns, capable of withstanding high temperatures up to 150 ºC.

Precision instrument: Perfect for optical lens focusing rings, utilizing M2.5 × 0.45 straight line rolling to achieve a remarkably low friction coefficient ≤ 0.15.

2. Three step selection method

Step 1: Substrate matching

For soft plastics like PC, opt for straight grain embossing in an annealed state (hardness HB80) to prevent cracking.

For metal substrates such as aluminum alloy, choose mesh rolling with nickel plating to significantly enhance corrosion resistance.

Step 2: Load verification

Static load: Each M3 knurled copper nut boasts a tensile strength of ≥ 300N, as verified by measured data.

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