3644469
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3644469 and manufactured by Cummins, is a vital component in the maintenance and operation of commercial trucks. Cummins, a well-established name in the industry, ensures that this screw meets the rigorous demands of heavy-duty applications.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by its hexagonal head and a flange beneath the head. This design allows for efficient tightening and loosening using a wrench or socket, while the flange provides additional surface area to distribute the load and prevent the screw from sinking into the material. Within mechanical systems, these screws play a role in securely fastening components together, ensuring structural integrity and proper function ¹.

Purpose and Role in Truck Operation

The 3644469 Hexagon Flange Head Cap Screw serves a specific purpose in commercial trucks by securing critical components that are subject to significant stress and vibration. It is commonly used in applications where a strong, reliable fastening solution is required, such as in engine mounts, transmission housings, and chassis components. By providing a secure connection, this screw helps maintain the alignment and integrity of these parts, contributing to the overall performance and safety of the truck.

Key Features

The 3644469 Hexagon Flange Head Cap Screw features a hexagonal head that allows for precise torque application, ensuring consistent tightening. The flange beneath the head distributes the load over a larger area, reducing the risk of the screw pulling through the material. Additionally, the screw is crafted from high-quality materials that offer excellent resistance to corrosion and wear, making it suitable for the demanding environments encountered in commercial trucking.

Benefits

Using the 3644469 Hexagon Flange Head Cap Screw offers several advantages. Its durable construction ensures long-term reliability, even under harsh conditions. The design resists loosening due to vibration, which is common in truck operations, thereby maintaining secure fastenings over time. Furthermore, the hexagonal head and flange facilitate easy installation and removal, allowing for efficient maintenance procedures.

Installation Process

Proper installation of the 3644469 Hexagon Flange Head Cap Screw involves several steps to ensure a secure and lasting connection. Begin by cleaning the mating surfaces to remove any debris or contaminants. Next, align the screw with the designated hole and start threading it by hand to avoid cross-threading. Once the screw is started, use a wrench or socket to tighten it to the specified torque setting, which can be found in the vehicle’s maintenance manual or on the packaging. It is important to follow the recommended torque specifications to prevent over-tightening, which could damage the screw or the surrounding material, and under-tightening, which could lead to loosening over time.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws include corrosion, wear, and loosening due to vibration. Regular inspection for signs of damage or corrosion is recommended. If a screw appears loose, it should be re-tightened to the specified torque. In cases of significant corrosion or damage, replacement of the screw may be necessary to ensure continued reliability and safety. Proper maintenance, including keeping the screws and surrounding areas clean and free of debris, can help extend the lifespan of these fasteners.

Safety Considerations

When working with Hexagon Flange Head Cap Screws, it is important to observe several safety practices. Always wear appropriate personal protective equipment, such as gloves and safety glasses, to protect against injury. Use the correct tools for installation and removal to avoid damaging the screw or the surrounding components. Store screws in a dry, corrosion-resistant environment to maintain their integrity. Additionally, follow all torque specifications and manufacturer guidelines to ensure safe and effective use.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a strong reputation for quality, reliability, and customer satisfaction in the commercial truck industry. The company’s extensive product range includes engines, powertrain components, and aftermarket parts, all designed to meet the demanding requirements of heavy-duty applications. Cummins’ commitment to innovation and excellence ensures that their products, including the 3644469 Hexagon Flange Head Cap Screw, deliver superior performance and durability.

Hexagon Flange Head Cap Screw (Part 3644469) in Cummins Engines

The Hexagon Flange Head Cap Screw, identified by the part number 3644469, is a critical component in several Cummins engine models. This screw is integral to the assembly and maintenance of these engines, ensuring secure fastening and stability in various applications.

QSK45 CM500 and QSK60 CM500

In the QSK45 CM500 and QSK60 CM500 engines, the 3644469 screw is utilized in several key areas. These engines are part of the Cummins QSK series, known for their robust design and reliability in heavy-duty applications. The screw’s flange head provides a larger bearing surface, which is essential for distributing the load evenly and preventing damage to the mating parts. This is particularly important in the high-stress environments these engines operate in.

QSK60 CM850 MCRS and QSK60 G CM2358 K110

For the QSK60 CM850 MCRS and QSK60 G CM2358 K110 engines, the 3644469 screw plays a vital role in maintaining the structural integrity of the engine components. The MCRS variant is designed for marine applications, where the screw’s ability to withstand corrosion and maintain its fastening strength is crucial. Similarly, in the QSK60 G CM2358 K110 engine, the screw’s design ensures that it can handle the specific stresses and environmental conditions encountered in its operational settings.

QSK60G

In the QSK60G engine, the 3644469 screw is used in various critical assemblies. This engine is part of the Cummins QSK series, which is known for its versatility and performance across different industries. The screw’s hexagonal flange head allows for easy and efficient tightening and loosening, which is essential during maintenance and repair operations.

Each of these engines relies on the 3644469 screw for its durability, strength, and reliability. The screw’s design ensures that it can perform effectively under the demanding conditions these engines face, contributing to the overall performance and longevity of the engine.

Role of Part 3644469 Hexagon Flange Head Cap Screw in Engine Systems

In the context of engine systems, the part 3644469 Hexagon Flange Head Cap Screw is instrumental in ensuring the secure assembly and operation of various components.

Aftercooler

Within the aftercooler system, this screw is utilized to fasten components that require a robust and reliable connection. Its hexagonal flange head design allows for efficient tightening and loosening, ensuring that the aftercooler’s components remain firmly in place. This is particularly important in maintaining the structural integrity and efficiency of the aftercooler, which is responsible for cooling the compressed air from the turbocharger before it enters the engine’s intake system.

Filter

In filter assemblies, the part 3644469 screw plays a significant role in securing filter housings and elements. The flange head provides additional surface area, which enhances the screw’s holding power, preventing any potential loosening over time. This ensures that the filter remains effectively sealed, maintaining its efficiency in trapping contaminants and providing clean air or fluid to the engine.

Lubricating Oil System

The lubricating oil system benefits from the use of the Hexagon Flange Head Cap Screw in several ways. It is commonly employed to secure oil filters, pressure relief valves, and various housings within the system. The screw’s design ensures a tight and secure fit, which is essential for maintaining the integrity of the oil seals and preventing leaks. This is vital for the consistent lubrication of engine components, reducing wear and tear, and enhancing the overall performance and longevity of the engine.

Conclusion

The 3644469 Hexagon Flange Head Cap Screw is a critical component in the maintenance and operation of commercial trucks and Cummins engines. Its design, featuring a hexagonal head and flange, ensures efficient tightening, load distribution, and resistance to corrosion and wear. The screw’s role in securing critical components under high-stress conditions contributes to the overall performance, safety, and longevity of the vehicle. Proper installation, maintenance, and adherence to safety practices are essential to maximize the benefits of this Cummins part.