4325250
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 4325250, is a component manufactured by Cummins, a well-established name in the automotive industry. This screw is integral to the assembly and maintenance of commercial trucks, providing reliable fastening solutions that ensure the structural integrity and operational efficiency of various truck components. Its design and functionality are tailored to meet the demanding requirements of heavy-duty applications ¹.

Basic Concepts

Hexagon Flange Head Cap Screws are designed with a hexagonal head and a flanged base. The hexagonal head allows for efficient torque application using standard tools, while the flange distributes load and prevents the screw from sinking into the material. These screws are typically made from high-strength materials such as alloy steel, which offer superior durability and resistance to wear and tear. Their primary function is to provide secure fastening in applications where vibration and dynamic loads are common ².

Purpose and Role in Truck Operation

This Cummins part plays a significant role in the operation of commercial trucks by securing critical components that are subject to high stress and vibration. It ensures that parts remain firmly in place, which is vital for the safe and efficient operation of the vehicle. By maintaining the structural integrity of truck components, this screw contributes to the overall reliability and performance of the truck ³.

Key Features

The 4325250 features a hexagonal head that facilitates easy and precise torque application. The flange at the base of the screw provides additional surface area, which helps in distributing the load and preventing the screw from embedding into the material. These features enhance the screw’s performance and reliability, making it suitable for heavy-duty truck applications ⁴.

Benefits

One of the primary benefits of the 4325250 is its ability to withstand high torque applications without loosening, which is crucial in dynamic environments like those found in commercial trucks. The flange design also offers resistance to loosening due to vibration, ensuring that fastened components remain secure over time. Additionally, the high-strength material used in its construction provides durability under heavy-duty conditions, contributing to reduced maintenance needs and improved overall truck performance ⁵.

Installation and Usage Guidelines

Proper installation of the 4325250 is vital for ensuring its optimal performance. It is recommended to use the appropriate torque wrench to apply the correct amount of torque during installation. This prevents over-tightening, which can lead to damage, and under-tightening, which can result in loosening. Following manufacturer guidelines for torque specifications ensures that the screw is installed correctly and functions as intended ⁶.

Troubleshooting and Maintenance

Common issues with the 4325250 may include loosening, corrosion, or damage due to wear and tear. Regular inspections can help identify these issues early. If loosening is detected, re-tightening the screw to the recommended torque specification is advised. Corrosion can be mitigated by applying a suitable anti-corrosive coating. Damaged screws should be replaced to maintain the integrity of the fastened components. Routine maintenance practices, such as periodic inspections and re-torquing, can prolong the lifespan of the screw and ensure continued reliable operation ⁷.

Cummins Overview

Cummins Inc. is a renowned manufacturer in the automotive industry, known for its high-quality components for commercial vehicles. With a rich history and a strong reputation, Cummins is committed to producing reliable and durable parts that meet the rigorous demands of heavy-duty applications. The company’s dedication to quality and innovation makes it a trusted provider of automotive parts, including the 4325250 ⁸.

Cummins Hexagon Flange Head Cap Screw 4325250 in ISV Engines

The Cummins Hexagon Flange Head Cap Screw part number 4325250 is a critical component in the assembly of the ISV (Intelligent Systems Vehicle) engines by Nissan. This part is integral to the structural integrity and operational efficiency of the engine, ensuring that various engine components are securely fastened and aligned.

In the context of the ISV engines, the 4325250 screw is utilized in several key areas. It is often employed in the fastening of engine covers, brackets, and other structural elements that require a robust and reliable connection. The screw’s design, featuring a hexagonal head and flange, provides a large surface area for torque application, which is essential for maintaining the integrity of the engine’s assembly under varying operational conditions.

The use of this screw in ISV engines underscores the importance of precision and quality in engine manufacturing. Cummins, known for its high-quality components, ensures that the 4325250 screw meets stringent standards for durability and performance. This screw’s application in ISV engines highlights the collaborative effort between Cummins and Nissan to deliver reliable and efficient engine solutions ⁹.

Role of Part 4325250 Hexagon Flange Head Cap Screw in Engine Systems

The part 4325250 is instrumental in securing and maintaining the integrity of various components within engine systems. Its robust design ensures reliable fastening in high-stress environments.

Block and Cylinder Assembly

In the block and cylinder assembly, the Hexagon Flange Head Cap Screw is used to fasten the cylinder head to the engine block. This secure attachment is vital for maintaining the compression integrity within the combustion chamber, ensuring efficient fuel combustion and power generation ¹⁰.

Compressor and Air Systems

For compressors, particularly in air and refrigerant compressors, this screw plays a significant role in attaching the compressor housing to its base. It ensures that the housing remains firmly in place, preventing leaks and maintaining the efficiency of air or refrigerant transfer ¹¹.

Connection Points

At various connection points throughout the engine, such as the air transfer connections and water inlet connections, the Hexagon Flange Head Cap Screw provides a secure fastening solution. This is essential for maintaining the sealing integrity and preventing fluid or air leaks, which could lead to system inefficiencies or failures ¹².

Cooler and Engine Oil Systems

In cooler systems, including engine oil coolers, this screw is used to attach the cooler housing to the engine block or other mounting surfaces. Proper attachment is necessary to ensure efficient heat exchange and to maintain the structural integrity of the cooler ¹³.

Cover and Front Sprocket

The screw is also utilized in attaching covers, such as the engine cover, and components like the front sprocket. This ensures that these parts remain securely in place, protecting internal components and maintaining the mechanical integrity of the engine ¹⁴.

Cylinder Block and Filter Systems

Within the cylinder block, the Hexagon Flange Head Cap Screw is employed to secure various sub-components, ensuring that they remain aligned and functional. In filter systems, it is used to attach filter housings, ensuring that the filters are properly sealed and can effectively perform their function ¹⁵.

Fuel and Manifold Systems

In fuel systems, particularly within the fuel manifold, this screw ensures that the manifold remains securely attached to the engine block. This is essential for maintaining the precise fuel delivery required for optimal engine performance ¹⁶.

Housing and Flywheel

The screw is also critical in attaching the housing for various engine components and securing the flywheel to the crankshaft. This ensures smooth operation and reliable power transmission within the engine ¹⁷.

Long Block Kit and Mounting Systems

In long block kits, the Hexagon Flange Head Cap Screw is used extensively to secure various components together, ensuring that the kit is assembled correctly and functions as intended. In mounting systems for both air and refrigerant compressors, it provides a sturdy attachment point, ensuring that the compressors are securely mounted and can operate efficiently ¹⁸.

Recirculation and Exhaust Systems

For recirculation systems, such as EGR (Exhaust Gas Recirculation), and exhaust systems, the screw is used to attach various components, ensuring that the systems operate efficiently and without leaks ¹⁹.

Water Pump and Drive

Finally, in water pump and water pump drive systems, the Hexagon Flange Head Cap Screw is used to secure the pump housing and drive components. This ensures that the water pump operates efficiently, providing the necessary cooling for the engine ²⁰.

Conclusion

The 4325250 Hexagon Flange Head Cap Screw by Cummins is a vital component in the automotive industry, particularly for commercial trucks and ISV engines. Its robust design, high-strength material, and flanged base make it suitable for heavy-duty applications, ensuring reliable fastening and maintaining the structural integrity of various engine components. Proper installation, regular maintenance, and adherence to manufacturer guidelines are essential for maximizing the performance and lifespan of this screw.