Flat Head Knurled Nut with Exceptional Durability for Various Uses

• Customization: Available
• Material: Stainless Steel
• Type: Round Head
• Model NO.: 1-1
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN
• Grade: 6.8
• Applicable Industries: Automobile Manufacturing, Solar Power Generation
• Use: Anti-Loosening
• Surface Treatment: True Color
• Whether to Support Customization: Support
• Transport Package: Container
• Specification: 1-30
• Trademark: Huilin
• Origin: Handan, Hebei
• HS Code: 0101101010
• Production Capacity: 50000

Product Description

Flat Head Knurled Nut: Exquisite Innovation for Your Fastening Needs

1. Definition and Structural Features

The Flat Head Rolling Nut is an ingeniously crafted fastener, showcasing a core structure that's composed of these integral elements:

Flat Head Design: With a sleek, flat-top architecture, it stands apart from the traditional convex hex nuts. This unique design ensures a snug fit with the workpiece surface, minimizing space usage and preventing any interference with surrounding components.

Rolling Pattern: The nut's exterior is adorned with precisely arranged raised patterns—be it straight lines, mesh, or intricate diamonds—crafted through advanced cold extrusion or rolling processes, dramatically boosting friction.

Internal Thread Structure: Equipped with standardized threads (e.g., M3, M4), these nuts seamlessly pair with bolts or studs for a robust mechanical bond.

2. Core Functional Features

Anti-Loosening Performance: When the rolling pattern engages with fingers or tools, it amplifies the tightening torque via friction, diminishing risks of loosening in vibrating environments.

Tool-Free Installation: Designed for ease, these nuts can be hand-tightened (though using specialized rolling tools yields optimum results), perfect for quick setups or maintenance tasks.

Low Height Design: The flat head ensures a reduced overall height compared to hex nuts, making it ideal for thin-walled parts and constrained spaces.

High-Strength Materials: Often forged from carbon steel (e.g., C1022), stainless steel (e.g., 304/316), or copper alloys, with surfaces enhanced by galvanizing, nickel plating, or blackening for superior corrosion resistance.

3. Typical Application Scenarios

Electronic Devices: Essential for securing PCB boards and chassis, preventing circuit board distortions or shorts caused by protruding traditional nuts.

Precision Instruments: An upgrade from hex nuts in optical and medical devices, saving space and simplifying disassembly.

Automotive Industry: Ideal for non-load bearing applications like interior fixtures and wiring harnesses, balancing fastening strength with lightweight design.

Furniture Manufacturing: Perfect for cabinet hinges, drawer slides, and more, harmonizing aesthetics with functionality.

4. Key Technical Parameters

Thread Specifications: Covering a vast range from M2 to M12, with bespoke models available in imperial standards (UNC/UNF).

• Height Range: The flat head's thickness is typically 0.5-0.8 times the nominal thread diameter (e.g., M4 nut height approximately 2-3.2mm).

Torque Requirement: Installation torque is adjusted based on material and rolling pattern type, generally recommended at 70% -85% of standard hex nuts.

• Surface Treatment:

Galvanized (white/blue zinc): Elevates salt spray resistance to 48-96 hours.

• Passivation Treatment: For stainless steel models, this enhances pitting corrosion resistance.

Dacromet Coating: Perfect for heavy-duty anti-corrosion needs, such as in maritime equipment.

5. Selection Precautions

• Load Capacity: The flat head design results in slightly less shear resistance than hex nuts, necessitating verification based on static/dynamic loads.

Installation Tools: Electric/pneumatic tools with roller flower adapter heads are recommended, along with anti-slip gloves for manual tasks.

Environmental Compatibility: Opt for special alloys like Inconel 718 or ceramic coatings in high-temperature (>150 ºC) or highly corrosive environments.