3644470
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3644470 and manufactured by Cummins, is a specialized fastener designed for heavy-duty truck applications. This screw is integral to the assembly and maintenance of various truck components, ensuring secure and reliable fastening in demanding environments.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of bolt characterized by its hexagonal head and a flange beneath the head. The hexagonal head allows for efficient torque application using standard tools, while the flange provides additional surface area for load distribution and prevents the screw from sinking into the material. This design is particularly suited for applications requiring high strength and resistance to loosening ¹.

Purpose and Role in Truck Operation

The 3644470 Hexagon Flange Head Cap Screw plays a significant role in the operation and maintenance of heavy-duty trucks. It is used in various components such as engine mounts, chassis assemblies, and structural reinforcements. The screw ensures that critical parts remain securely fastened, contributing to the overall stability and performance of the truck. Its applications extend to areas where vibrations and dynamic loads are common, making it a vital component in ensuring the integrity of truck assemblies ².

Key Features

The 3644470 Hexagon Flange Head Cap Screw features a hexagonal head that facilitates easy and precise torque application. The flange beneath the head enhances load distribution and provides additional resistance against the screw sinking into the material. Constructed from high-strength materials, this screw offers excellent durability and resistance to corrosion, making it suitable for the harsh conditions encountered in heavy-duty truck operations ³.

Benefits

The 3644470 Hexagon Flange Head Cap Screw offers several benefits. Its design allows for improved torque application, ensuring that fastenings are secure and reliable. The flange characteristic enhances resistance to loosening, which is crucial in dynamic environments. Additionally, the screw’s material properties contribute to its durability and resistance to wear, providing long-lasting performance in heavy-duty applications.

Installation and Usage Guidelines

To ensure optimal performance and longevity, the 3644470 Hexagon Flange Head Cap Screw should be installed following these guidelines:

1. Ensure the mating surfaces are clean and free of debris.
2. Use the appropriate torque wrench to apply the recommended torque specifications.
3. Verify that the flange is in full contact with the surface to maximize load distribution.
4. Regularly inspect the screw for signs of wear or damage and replace if necessary.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws include loosening due to vibrations and corrosion. To address these issues:

1. Regularly inspect screws for signs of loosening or corrosion.
2. Re-torque screws as needed to maintain secure fastenings.
3. Apply anti-seize compound to prevent corrosion in high-stress areas.
4. Replace screws that show significant wear or damage to ensure continued reliability.

Safety Considerations

When working with Hexagon Flange Head Cap Screws, it is important to observe the following safety considerations:

1. Use the correct tools and torque specifications to avoid over-tightening or under-tightening.
2. Wear appropriate personal protective equipment (PPE) such as gloves and safety glasses.
3. Ensure that work areas are clean and free of hazards to prevent accidents.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and commitment to quality, Cummins serves customers in approximately 190 countries and territories through a network of more than 600 company-owned and independent distributor facilities and approximately 7,400 dealer locations. Cummins is dedicated to providing reliable and efficient power solutions for a wide range of industries, including automotive and heavy-duty truck applications.

Cummins Part 3644470 in Engine Applications

The Cummins part 3644470, a Hexagon Flange Head Cap Screw, is integral to the assembly and maintenance of various Cummins engines. This part is designed to provide a secure fastening solution, ensuring that components remain tightly secured under operational stresses.

QSK78 Engine

In the QSK78 engine, the Hexagon Flange Head Cap Screw is utilized in several critical applications. It is often employed in securing engine covers, brackets, and other structural components that require a robust and reliable fastening method. The precision engineering of this screw ensures that it can withstand the high torque and operational stresses typical of the QSK78 engine.

CM500 Engine

Similarly, in the CM500 engine, the Hexagon Flange Head Cap Screw is essential for maintaining the integrity of various engine components. This part is frequently used in securing the engine’s internal and external parts, ensuring that they remain in place during operation. The screw’s design allows for easy installation and removal, which is crucial during maintenance and repair procedures.

Grouping of Engines

Both the QSK78 and CM500 engines belong to Cummins’ lineup of high-performance engines, often used in heavy-duty applications such as marine, construction, and power generation. The Hexagon Flange Head Cap Screw’s role in these engines is to provide a dependable fastening solution that can endure the demanding conditions these engines operate under.

The use of this screw in these engines highlights Cummins’ commitment to quality and reliability, ensuring that each component, no matter how small, is engineered to meet the highest standards.

Role of Part 3644470 Hexagon Flange Head Cap Screw in Engine Systems

In the context of engine systems, the part 3644470 Hexagon Flange Head Cap Screw is instrumental in ensuring the secure assembly and reliable operation of various components. This screw is often utilized in the fastening of the aftercooler, a vital component in turbocharged engine systems.

The aftercooler, also known as an intercooler, plays a significant role in enhancing engine performance by cooling the compressed air from the turbocharger before it enters the engine’s combustion chambers. The efficiency of the aftercooler is paramount, as it directly influences the air density and, consequently, the engine’s power output and fuel efficiency.

The Hexagon Flange Head Cap Screw, with its distinctive design, provides a number of advantages in this application. The flange head offers a larger surface area for distribution of the clamping force, which helps in preventing the screw from digging into the fastened materials. This is particularly beneficial in the aftercooler assembly, where maintaining the integrity of the connections is essential for optimal performance.

Moreover, the hexagonal socket head of the screw allows for easy and secure tightening using a hex key, ensuring that the fastener can be properly torqued to the manufacturer’s specifications. This is important for the aftercooler, as improper torque can lead to leaks or insufficient cooling, both of which can adversely affect engine performance.

In summary, the part 3644470 Hexagon Flange Head Cap Screw is a key component in the secure and efficient assembly of the aftercooler within engine systems, contributing to the overall reliability and performance of the engine.

Conclusion

The 3644470 Hexagon Flange Head Cap Screw is a critical component in the assembly and maintenance of heavy-duty truck and engine systems. Its design, featuring a hexagonal head and a flange, ensures secure and reliable fastening in demanding environments. The screw’s high-strength material and resistance to corrosion make it suitable for the harsh conditions encountered in heavy-duty applications. Proper installation, regular maintenance, and adherence to safety considerations are essential to ensure the longevity and reliability of this Cummins part.