Round Nut with Premium Quality for Enhanced Performance in Industries

• 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 description

1. Definition and Structural Features

The flat head rolling nut is an ingeniously crafted fastener, featuring a unique core structure composed of the following key elements:

Flat Head Design: The nut's flat top structure elegantly contrasts with the traditional convex head of hex nuts, ensuring a snug fit with the workpiece surface, minimizing space usage, and preventing interference with adjacent components.

Rolling Pattern: The nut's outer surface boasts regular, engaging raised patterns, such as straight lines, mesh, or diamonds, formed via cold extrusion or rolling processes, significantly augmenting friction and grip.

Internal Thread Structure: Expertly machined with standard threads (e.g., M3, M4), these threads harmonize with bolts/studs to deliver seamless mechanical connection.

2. Core Functional Features

Anti-Loosening Performance: The rolling pattern, upon contact with fingers or tools, amplifies the tightening torque through friction, effectively mitigating the risk of loosening in vibrational environments.

Tool-Free Installation: These nuts can be hand-tightened (with specialized rolling tools recommended for optimal results), ideal for situations demanding swift assembly or maintenance.

Low Height Design: The flat head structure ensures a more compact overall height compared to hexagonal nuts, particularly advantageous for thin-walled parts or confined spaces.

High Strength Materials: Typically forged from carbon steel (e.g., C1022), stainless steel (e.g., 304/316), or copper alloy, with surfaces that can be galvanized, nickel-plated, or blackened to bolster corrosion resistance.

3. Typical Application Scenarios

Electronic Devices: Perfect for securing PCB boards, chassis shells, and more, effectively mitigating risks of circuit board deformation or short circuits caused by traditional nut protrusions.

Precision Instruments: These nuts replace hex ones in optical equipment and medical devices, optimizing space usage and simplifying disassembly.

Automotive Industry: Ideal for non-load-bearing parts like interior components and wire harnesses, balancing fastening needs with lightweight design considerations.

Furniture Manufacturing: Tailored for cabinet door hinges, drawer slides, and other components, harmonizing aesthetics with functionality.

4. Key Technical Parameters

Thread Specifications: Accommodates metric standards from M2 to M12, with certain customized models supporting imperial systems (UNC/UNF).

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

Torque Requirement: Adjust installation torque based on material and rolling pattern type. The recommended value generally ranges from 70% to 85% of the standard hex nut.

• Surface Treatment:

Galvanized (White Zinc/Blue Zinc): Enhances salt spray resistance to 48-96 hours.

• Passivation Treatment: Stainless steel models benefit from increased resistance to pitting corrosion.

Dacromet Coating: Perfect for heavy-duty anti-corrosion applications, such as marine equipment.

5. Selection Precautions

• Load Capacity: The flat head design results in slightly reduced shear resistance compared to hexagonal nuts, necessitating verification based on static/dynamic loads.

Installation Tools: For best results, use electric/pneumatic tools with a roller flower adapter head, and wear anti-slip gloves for manual operation.

Environmental Compatibility: Opt for special alloys (e.g., Inconel 718) or ceramic coatings for high-temperature (>150 ºC) or corrosive environments.