3644849
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3644849, is a specialized fastener produced by Cummins. This screw is integral to heavy-duty truck applications, where it is used to secure various components under demanding conditions. Cummins, a renowned manufacturer in the automotive industry, ensures that this part meets stringent quality and performance standards ¹.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of bolt characterized by a hexagonal head and a flanged base. This design allows for efficient tightening and loosening using standard tools, such as wrenches or sockets. Mechanically, the screw functions by converting torque into clamping force, which holds components together securely. Its flange provides additional surface area, enhancing stability and resistance to rotation ².

Purpose and Role in Truck Operation

The 3644849 Hexagon Flange Head Cap Screw plays a specific role in heavy-duty trucks by securing critical components that are subject to significant stress and vibration. It is often used in applications where a high degree of fastening strength and resistance to loosening is required. By maintaining secure connections, this screw contributes to the overall reliability and safety of the truck’s operation ³.

Key Features

The 3644849 Hexagon Flange Head Cap Screw is designed with several key features that enhance its performance and durability. Its hexagonal head allows for easy and precise tightening, while the flanged base provides additional stability. The screw is typically made from high-strength materials, such as alloy steel, to withstand the rigors of heavy-duty applications. Additionally, it may feature a corrosion-resistant coating to prolong its lifespan in harsh environments.

Benefits

Using the 3644849 Hexagon Flange Head Cap Screw offers several advantages. Its design provides improved fastening strength, ensuring that components remain securely attached under demanding conditions. The flanged base enhances resistance to vibration, reducing the likelihood of loosening over time. Furthermore, the screw’s ease of installation and removal simplifies maintenance procedures, allowing for quick and efficient component changes.

Installation and Usage

Proper installation of the 3644849 Hexagon Flange Head Cap Screw is crucial for optimal performance. It should be installed using the appropriate torque specifications to ensure the correct clamping force is achieved without over-tightening, which could damage the screw or the components being fastened. Best practices include using a torque wrench to apply the specified torque and periodically checking the screw’s tightness during operation to maintain secure connections.

Troubleshooting and Maintenance

Common issues with the 3644849 Hexagon Flange Head Cap Screw may include loosening due to vibration or corrosion caused by exposure to harsh environments. To address these issues, regular inspections should be conducted to ensure the screw remains tight and free from corrosion. Maintenance tips include applying a thread locker to prevent loosening and using a corrosion-resistant lubricant to protect the screw from environmental factors. Replacing the screw if significant corrosion or damage is detected will help maintain reliable performance.

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 itself as a trusted name in the automotive industry, particularly in diesel engine manufacturing. The company is committed to quality, innovation, and customer satisfaction, ensuring that its products, including the 3644849 Hexagon Flange Head Cap Screw, meet the highest standards of performance and reliability.

Hexagon Flange Head Cap Screw 3644849 in Cummins Engines

The Hexagon Flange Head Cap Screw part number 3644849, manufactured by Cummins, is a critical component in various Cummins engine models. This screw is designed to provide secure fastening in applications where a robust and reliable connection is essential.

Application in Cummins Engines

QSK45 CM500 and QSK60 CM500

In the QSK45 CM500 and QSK60 CM500 engines, the 3644849 screw is utilized in several critical areas. These engines are known for their durability and efficiency, and the screw’s design ensures that components are held firmly in place, contributing to the engine’s overall performance and longevity.

QSK60 CM850 MCRS and QSK60 G CM2358 K110

For the QSK60 CM850 MCRS and QSK60 G CM2358 K110 engines, the 3644849 screw is integral to maintaining structural integrity. These engines are often used in heavy-duty applications, and the screw’s ability to withstand high stress and torque is crucial for ensuring that the engine operates smoothly under demanding conditions.

QSK60G

In the QSK60G engine, the 3644849 screw is employed in various fastening applications. This engine is designed for versatility and efficiency, and the screw’s precision engineering ensures that all parts are securely fastened, contributing to the engine’s reliability and performance.

QSK78 CM500

Similarly, in the QSK78 CM500 engine, the 3644849 screw plays a vital role in securing key components. This engine is known for its power and efficiency, and the screw’s robust design ensures that all parts are held firmly in place, enhancing the engine’s overall performance and durability.

The use of the 3644849 Hexagon Flange Head Cap Screw across these Cummins engines highlights its importance in maintaining the structural integrity and performance of the engines. Its design and material ensure that it can withstand the rigors of heavy-duty applications, making it a reliable choice for securing various components in these engines.

Hexagon Flange Head Cap Screw (Part 3644849) in Engine Systems

The Hexagon Flange Head Cap Screw, identified by part number 3644849, is integral to the assembly and maintenance of various engine components. Its design allows for secure fastening, which is essential for the reliable operation of engine systems.

Lubricating Oil Pump

In the lubricating oil pump, the Hexagon Flange Head Cap Screw is used to fasten the pump housing to the engine block. This secure attachment ensures that the pump operates efficiently, maintaining consistent oil pressure and flow. The screw’s flange head provides additional surface area for torque application, reducing the risk of stripping and ensuring a tight seal. This is particularly important in the lubricating oil pump, where any leakage can lead to inadequate lubrication and increased wear on engine components.

The screw’s role in the lubricating oil pump highlights its importance in maintaining the integrity of the oil circulation system. Proper fastening ensures that the pump can deliver oil to critical engine parts, such as bearings, pistons, and camshafts, thereby prolonging the engine’s lifespan and enhancing its performance.

Conclusion

The 3644849 Hexagon Flange Head Cap Screw is a vital component in heavy-duty truck applications and Cummins engines. Its design, featuring a hexagonal head and flanged base, ensures secure fastening and resistance to vibration. Made from high-strength materials and often coated for corrosion resistance, this Cummins part is engineered to withstand the rigors of demanding environments. Proper installation and maintenance are crucial for optimal performance, ensuring that critical components remain securely attached and the engine operates reliably.