3420844
Regular Hexagon Nut
Cummins®

The 3420844 Regular Hexagon Nut, manufactured by Cummins, is a specialized fastener designed for use in commercial trucks. Cummins, a well-established name in the commercial truck industry, produces a range of components that contribute to the efficiency, reliability, and safety of heavy-duty vehicles. Fasteners, such as the 3420844, play a significant role in the maintenance and operation of these trucks by ensuring that various components remain securely assembled. This overview will delve into the specifics of this nut, its design, purpose, and the benefits it offers in truck applications.

Basic Concepts of Regular Hexagon Nuts

A regular hexagon nut is characterized by its six-sided shape, which provides a larger surface area for wrench engagement compared to other shapes. This design allows for more efficient torque application and reduces the likelihood of the nut loosening over time ¹. The hexagonal shape is particularly advantageous in high-torque applications, such as those found in commercial trucks, where secure fastening is paramount.

Purpose and Role in Truck Operation

The 3420844 Regular Hexagon Nut serves a specific purpose in the context of commercial trucks. It is used to securely fasten various components, contributing to the overall structural integrity and safety of the vehicle. By providing a reliable connection between parts, this nut helps maintain the alignment and functionality of critical truck systems, ensuring that they operate as intended under demanding conditions ².

Key Features

The 3420844 Regular Hexagon Nut is crafted from high-quality materials, ensuring durability and performance in the challenging environments typical of commercial truck applications. Its thread size is designed to match specific truck components, allowing for a secure fit. Additionally, the nut may feature special coatings or treatments that enhance its resistance to corrosion and wear, further extending its service life ³.

Benefits

Utilizing the 3420844 Regular Hexagon Nut offers several benefits, including improved fastening security, enhanced corrosion resistance, and increased longevity. These attributes contribute to overall truck performance by ensuring that components remain securely fastened, reducing the need for frequent maintenance and repairs. The nut’s design and material properties also help to minimize the risk of failure, enhancing safety and reliability.

Installation Guidelines

Proper installation of the 3420844 Regular Hexagon Nut is crucial for optimal performance and safety. It is recommended to follow specific torque specifications provided by the manufacturer to ensure that the nut is tightened to the correct level. Best practices include using the appropriate tools for installation and periodically checking the tightness of the nut to prevent loosening over time.

Troubleshooting and Maintenance

Common issues with regular hexagon nuts in truck applications can include loosening, corrosion, and wear. Troubleshooting these problems may involve re-tightening the nut, applying a thread locker, or replacing the nut if it is damaged. Regular maintenance practices, such as inspecting the nut for signs of wear or corrosion and ensuring it remains properly tightened, can help prolong its life and ensure continued reliable performance.

Cummins: Manufacturer Overview

Cummins Inc. is a leading manufacturer in the commercial truck industry, known for its commitment to quality and innovation. With a broad product range that includes engines, filtration systems, and aftermarket parts, Cummins has established a reputation for producing reliable and high-performance components. The company’s dedication to excellence is reflected in its manufacturing processes and the durability of its products, making it a preferred choice for truck operators and maintenance professionals.

Cummins Regular Hexagon Nut 3420844 Compatibility with Engine Models

The Cummins Regular Hexagon Nut part number 3420844 is a versatile component designed to fit seamlessly with a range of Cummins engine models. This part is integral to the assembly and maintenance of these engines, ensuring secure connections and reliable performance.

Compatible Engine Models

• QSV81G and QSV91G

  The Regular Hexagon Nut 3420844 is compatible with the QSV81G and QSV91G engines. These engines are known for their robust design and efficiency, and the nut plays a crucial role in maintaining the structural integrity of these models.

• QSV91-G4 CM558/CM700 V102

  This engine variant, QSV91-G4 CM558/CM700 V102, also benefits from the use of the 3420844 nut. Its precision engineering ensures that the nut fits perfectly, contributing to the overall durability and performance of the engine.

• QSW/QSV82 and QSW27

  The nut is also suitable for the QSW/QSV82 and QSW27 engines. These engines are designed for specific applications, and the 3420844 nut is engineered to meet the stringent requirements of these models.

• QSW36 and QSW73

  Finally, the QSW36 and QSW73 engines are also compatible with the 3420844 nut. These engines are part of a series that emphasizes reliability and performance, and the nut is a critical component in their assembly and maintenance.

Each of these engines relies on the precision and durability of the 3420844 nut to ensure optimal performance and longevity. The compatibility of this part across multiple engine models underscores its importance in the Cummins engine ecosystem.

Role of Part 3420844 Regular Hexagon Nut in Engine Systems

The part 3420844 Regular Hexagon Nut is integral to the secure assembly and operation of various engine components. Its application spans across multiple systems, ensuring the integrity and efficiency of the engine.

Accessory Assembly Support

In the accessory assembly support, the Regular Hexagon Nut is used to fasten components securely, ensuring that accessories like alternators and water pumps are firmly attached to the engine block. This secure attachment is essential for the smooth operation of these accessories.

Adjusting Assembly Link and Adjusting Link

For the adjusting assembly link and adjusting link, the Regular Hexagon Nut plays a role in maintaining the precise tension and alignment of linkages. This is particularly important in systems where exact mechanical advantage and movement are required, such as in valve train adjustments or governor mechanisms.

Air Intake Manifold and Air Outlet Pipe

In the air intake manifold and air outlet pipe assemblies, the Regular Hexagon Nut ensures that these components are tightly sealed to the engine. This sealing is vital for maintaining the correct air-fuel mixture and ensuring efficient combustion.

Assembly Housing Gear and Gear Assembly Housing

Within the assembly housing gear and gear assembly housing, the Regular Hexagon Nut is used to secure gears and housings, preventing any misalignment or movement that could lead to gear failure or increased wear.

Block and Cylinder

The Regular Hexagon Nut is employed in the block and cylinder assemblies to secure various components, such as sensors or mounting brackets, ensuring they remain in place under the high stresses and vibrations of engine operation.

Cooler Charge Air S/Assembly and Cooler

In the cooler charge air s/assembly and cooler systems, the Regular Hexagon Nut is used to secure fins, tubes, and mounting brackets. This ensures the cooler operates efficiently by maintaining the structural integrity and alignment of its components.

Engine Oil and Exhaust Manifold

For the engine oil system, the Regular Hexagon Nut is used in the secure attachment of oil filters, sensors, and pipes. In the exhaust manifold, it ensures that the manifold is firmly attached to the engine block, preventing leaks and ensuring efficient exhaust flow.

Filter, Full Flow Oil, and Full Flow Assembly Filter

In the full flow oil filter and full flow assembly filter systems, the Regular Hexagon Nut is critical for securing the filter housing and ensuring a tight seal, which is essential for effective filtration and maintaining oil cleanliness.

Governor Counter Assembly Linkage and Governor Linkage

The Regular Hexagon Nut is utilized in the governor counter assembly linkage and governor linkage to ensure that all moving parts are securely fastened. This is important for maintaining the precise control of engine speed and performance.

Heat Exchanger Support

In the heat exchanger support, the Regular Hexagon Nut is used to secure the heat exchanger to its mounting points, ensuring it remains stable and efficiently transfers heat.

Housing, Pump Drive, and Housing, Accy Drive Pulley

For the housing, pump drive, and housing, accy drive pulley, the Regular Hexagon Nut ensures that these components are securely attached to the engine, preventing any movement that could affect their operation.

Intake Assembly Manifold

In the intake assembly manifold, the Regular Hexagon Nut is used to secure the manifold to the engine block, ensuring a tight seal that is crucial for proper air intake and engine performance.

Lubricating Oil Module Assembly

Within the lubricating oil module assembly, the Regular Hexagon Nut secures various components, ensuring the module operates efficiently and maintains the proper lubrication of engine parts.

Manifold Air Intake Assembly and Pipe Air Outlet Assembly

In the manifold air intake assembly and pipe air outlet assembly, the Regular Hexagon Nut ensures these components are securely attached, maintaining the integrity of the air intake and exhaust systems.

Power Take-Off Assembly Housing

For the power take-off assembly housing, the Regular Hexagon Nut is used to secure the housing to the engine, ensuring it can transmit power efficiently without any risk of detachment.

Sea Water Pump Assembly Housing

In the sea water pump assembly housing, the Regular Hexagon Nut ensures that the pump is securely attached to the engine, which is essential for cooling systems in marine engines.

Thermostat Assembly Housing

Finally, in the thermostat assembly housing, the Regular Hexagon Nut secures the thermostat housing to the engine, ensuring it can regulate engine temperature effectively.

Conclusion

The 3420844 Regular Hexagon Nut is a critical component in the maintenance and operation of commercial trucks, particularly those equipped with Cummins engines. Its design, purpose, and benefits make it an essential part for ensuring the secure assembly and reliable performance of various engine systems. Proper installation, maintenance, and troubleshooting practices are vital for maximizing the lifespan and effectiveness of this nut in demanding truck applications.