Durable Flat Knurled Nut Ideal for Solar Power Generation Applications

• 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

Introducing the Flat Head Knurled Nut: A Marvel of Precision Engineering

1. Definition and Structural Features

The flat head rolling nut is a precision-engineered fastener, meticulously crafted with a core structure comprising:

Flat Head Design: Featuring a unique flat top design, this nut distinguishes itself from traditional convex hex nuts, ensuring a snug fit with the workpiece surface while minimizing space usage and preventing interference with adjacent components.

Rolling Pattern: The nut's exterior boasts an array of intricately raised patterns, including straight lines, mesh designs, and diamond shapes, crafted through advanced cold extrusion or rolling methods, significantly boosting friction.

Internal Thread Structure: Boasting standard internal threads (such as M3, M4, etc.), these nuts pair seamlessly with bolts and studs to secure reliable mechanical connections.

2. Core Functional Features

Anti-Loosening Performance: The expertly crafted rolling pattern engages with fingers or tools, amplifying tightening torque through increased friction, thus mitigating loosening risks in vibration-prone environments.

Tool-Free Installation: Designed for convenience, these nuts can be hand-tightened (with specialized rolling tools for optimal results), perfectly suiting situations requiring swift assembly or maintenance.

Low Height Design: With its flat head structure, this nut offers a lower profile compared to hexagonal counterparts, making it ideal for use in thin-walled components or confined spaces.

High-Strength Materials: Crafted from robust materials such as carbon steel (e.g., C1022), stainless steel (e.g., 304/316), or copper alloy. Surface enhancements include galvanization, nickel plating, or blackening to boost corrosion resistance.

3. Typical Application Scenarios

Electronic Devices: Essential for securing PCB boards and chassis shells, mitigating the risk of circuit board deformation or short circuits caused by protruding traditional nuts.

Precision Instruments: Ideal for optical equipment and medical devices, these nuts replace hex nuts to optimize space usage and simplify disassembly.

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

Furniture Manufacturing: Applied in cabinet door hinges and drawer slides, seamlessly balancing aesthetics with functionality.

4. Key Technical Parameters

Thread Specifications: Encompassing a range of metric standards from M2 to M12, with select custom models accommodating imperial systems (like UNC/UNF).

• Height Range: Typically, the flat head's thickness ranges from 0.5 to 0.8 times the nominal diameter of the thread (e.g., M4 nut height is about 2-3.2mm).

Torque Requirement: Adjust installation torque based on material and rolling pattern type, generally recommended at 70% - 85% of a standard hex nut's torque.

• Surface Treatment:

Galvanization (white zinc/blue zinc): Enhances salt spray resistance, enduring 48-96 hours.

• Passivation Treatment: Stainless steel variants gain enhanced resistance against pitting corrosion.

Dacromet Coating: Tailored for intensive anti-corrosion applications, such as in maritime equipment.

5. Selection Precautions

• Load Capacity: The flat head design may offer slightly lower shear resistance than hex nuts, necessitating verification based on static and dynamic loads.

Installation Tools: Recommended use of electric/pneumatic tools with a roller flower adapter head, alongside anti-slip gloves for manual operations.

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