3012526
Hexagon Flange Nut
Cummins®

The Cummins 3012526 Hexagon Flange Nut is a critical component in the maintenance and operation of commercial trucks. This part ensures secure fastening of various truck components, contributing to the overall reliability and performance of commercial vehicles.

Basic Concepts of Hexagon Flange Nuts

A Hexagon Flange Nut is a fastener with a hexagonal shape and a flange—a flat, circular plate—attached to one end. This design facilitates easier tightening and loosening with a wrench or socket, providing a stable and secure connection in fastening applications. The flange distributes the load over a larger area, reducing the risk of damage to the fastened material and enhancing the nut’s resistance to loosening under vibration ¹.

Purpose of the 3012526 Hexagon Flange Nut in Truck Operation

This Cummins part is essential in the operation and maintenance of commercial trucks. It is used in various truck components where secure and durable fastening is required, from securing engine components to attaching body panels, ensuring that critical parts remain firmly in place under demanding conditions ².

Key Features

The 3012526 is distinguished by several key features that enhance its performance and durability. Its hexagonal shape allows for efficient tightening and loosening, while the flange design provides additional stability and load distribution. The nut is composed of materials selected for their strength and resistance to corrosion, ensuring longevity in harsh operating environments. Additionally, any unique attributes, such as a special coating or threading, further contribute to its reliability and ease of use ³.

Benefits

The 3012526 offers several benefits that make it a preferred choice for commercial truck maintenance. It provides improved fastening security, effectively resisting loosening due to vibration—a common issue in truck operations. The ease of installation and removal, facilitated by its design, allows for quick and efficient maintenance procedures. Furthermore, its durability and resistance to corrosion ensure a long service life, reducing the need for frequent replacements.

Installation and Usage

Proper installation of the 3012526 is crucial for ensuring a secure and lasting connection. It is recommended to follow specific torque specifications provided by the manufacturer to achieve the optimal tightening force without over-tightening, which could lead to damage. Best practices include using the correct tools for installation and periodically checking the tightness of the nut to maintain secure fastening over time.

Troubleshooting and Maintenance

Common issues with the 3012526, such as loosening or corrosion, can often be addressed through regular inspection and maintenance. If loosening is detected, re-tightening to the specified torque is recommended. In cases of corrosion, cleaning the nut and the fastened area, followed by reapplication of any protective coatings, can help prolong its service life. Regular maintenance checks ensure that the nut remains in optimal condition, contributing to the overall reliability of the truck.

Cummins: Manufacturer Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration systems, and aftermarket parts. With a history spanning over a century, Cummins has established a reputation for quality, reliability, and innovation in the commercial truck industry. Their product range is designed to meet the demanding requirements of commercial vehicle operations, ensuring performance, efficiency, and durability.

Hexagon Flange Nut 3012526 Compatibility with Cummins Engines

The 3012526, manufactured by Cummins, is designed to fit a variety of Cummins engines, ensuring secure fastening in various applications. Here are the engines with which this part is compatible:

C8.3 Series

• 6C8.3
• C8.3 G

G855 Series

• G855
• G855 CM558
• GTA855 CM558 (CM2358) G101

N14 Series

• N14 CELECT
• N14 CELECT PLUS
• N14 G
• N14 MECHANICAL

NH/NT 855 Series

• NH/NT 855

QSN14 Series

• QSN14 CM876 N103
• QSNT14 CM876 N102

V28

• V28

This compatibility ensures that the 3012526 can be used across multiple engine models, providing a reliable and standardized solution for securing flanges in these engines.

Role of Part 3012526 Hexagon Flange Nut in Engine Systems

The 3012526 is instrumental in securing various components within engine systems, ensuring stability and proper function. Here’s how it integrates with the provided components:

• Accessory Drive Pulley: The Hexagon Flange Nut is used to fasten the accessory drive pulley to the engine, maintaining alignment and tension of the drive belt.

• Accessory Mounting Pulley: This nut secures the accessory mounting pulley, which is essential for driving various engine accessories like the alternator and air conditioning compressor.

• Base Parts: In the assembly of base parts, the Hexagon Flange Nut plays a role in attaching critical components to the engine block, providing a stable foundation.

• Belt Guard and Damper Guard: These components often require secure mounting to prevent belt slippage and reduce vibrations. The Hexagon Flange Nut ensures these guards are firmly in place.

• Connection, Water Inlet: The nut is employed to fasten the water inlet connection, ensuring a leak-free and secure fit for coolant flow.

• Cylinder Liner Remover: During maintenance or repair, the Hexagon Flange Nut may be used to secure tools like the cylinder liner remover, ensuring they are stable and safe to use.

• Drive, Accessory: Accessories driven by the engine, such as the power steering pump, rely on the Hexagon Flange Nut for secure attachment to the engine.

• EBM: Pulley: The Engine-Driven Blower Motor (EBM) pulley is another component where this nut ensures secure attachment, vital for consistent airflow.

• Fan Drive Ratio (.75 to 1 and 1 to 1): The Hexagon Flange Nut is used to attach the fan drive pulley, which is crucial for maintaining the correct fan speed relative to engine RPM.

• Pulley & Belt Guard: This nut secures the pulley and belt guard assembly, protecting the belt from external elements and ensuring smooth operation.

• Pulley, Water Pump Drive: The water pump drive pulley is fastened using this nut, ensuring efficient coolant circulation through the engine.

• Radiator Cooling: Components related to radiator cooling, such as mounting brackets, may use the Hexagon Flange Nut for secure attachment.

• Service Tool Kit: Various tools within a service kit might require the Hexagon Flange Nut for assembly or attachment during engine maintenance procedures.

Conclusion

The 3012526 Hexagon Flange Nut by Cummins is a vital component in the maintenance and operation of commercial trucks. Its design and features ensure secure fastening of various truck components, contributing to the overall reliability and performance of commercial vehicles. Proper installation, regular maintenance, and understanding its role in engine systems are key to maximizing the benefits of this part.