4325266
Hexagon Flange Head Cap Screw
Cummins®

Introduction

The Hexagon Flange Head Cap Screw, identified by part number 4325266, is a component manufactured by Cummins, a well-established name in the heavy-duty truck industry. This screw is integral to the assembly and maintenance of heavy-duty trucks, ensuring the secure fastening of various components.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by a hexagonal head and a flange beneath the head. The hexagonal head 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. In the context of heavy-duty trucks, these screws are used to fasten components that require a high degree of security and resistance to vibration ¹.

Purpose and Role in Truck Operation

This Cummins part plays a role in the secure attachment of various truck components. It is commonly used in applications where vibration resistance and load distribution are crucial, such as in the fastening of engine components, chassis parts, and other critical assemblies. By providing a stable and secure connection, this screw contributes to the overall reliability and performance of the truck ².

Key Features

The 4325266 features a hexagonal head that facilitates easy and precise tightening. The flange beneath the head enhances the screw’s ability to distribute loads and resist sinking into the material. Additionally, the screw is made from high-quality materials that offer excellent durability and resistance to corrosion, ensuring long-term performance in demanding environments.

Benefits

The benefits of using the 4325266 include enhanced fastening security, superior resistance to vibration, and increased durability. The design of the screw allows for efficient and reliable fastening, reducing the risk of component failure due to loosening. Its resistance to corrosion ensures that it maintains its integrity over time, even in harsh operating conditions ³.

Installation Considerations

Proper installation of the Hexagon Flange Head Cap Screw is vital to ensure optimal performance and longevity. It is recommended to use the appropriate tools to achieve the correct torque specifications during installation. Additionally, ensuring that the mating surfaces are clean and free from debris will help to achieve a secure and lasting connection.

Troubleshooting Common Issues

Common issues associated with the 4325266 may include loosening due to vibration or corrosion. To address these issues, regular inspections should be conducted to check for signs of loosening or corrosion. If loosening is detected, the screw should be re-tightened to the specified torque. In cases of corrosion, the affected area should be cleaned, and the screw may need to be replaced if significant damage is present.

Maintenance Tips

Routine maintenance of the 4325266 involves periodic inspections to ensure that it remains securely fastened and free from corrosion. Cleaning the screw and its surrounding area can help to prevent the buildup of debris and contaminants that may lead to corrosion. Additionally, applying a corrosion-resistant coating can further enhance the screw’s durability in harsh environments.

Cummins Overview

Cummins is a renowned manufacturer in the heavy-duty truck industry, known for its high-quality products and innovative solutions. With a rich history spanning several decades, Cummins has established a strong reputation for producing reliable and durable components that meet the demanding requirements of heavy-duty applications. The company’s product range includes engines, powertrain components, and aftermarket parts, all designed to deliver exceptional performance and longevity.

Cummins Hexagon Flange Head Cap Screw 4325266 in Nissan ISV Engines

The Cummins Hexagon Flange Head Cap Screw, part number 4325266, is a critical component in the assembly of the Nissan ISV engines. This screw is designed to provide a secure and reliable fastening solution, ensuring that various parts of the engine remain tightly connected under operational stress. The flange head design allows for a larger bearing surface, which helps distribute the load more evenly and reduces the risk of stripping or damage to the screw threads.

In the context of the Nissan ISV engines, the 4325266 screw is utilized in several key areas. It is often employed in securing engine covers, heat shields, and other ancillary components that are essential for maintaining the engine’s structural integrity and operational efficiency. The screw’s robust construction and precise fit are crucial for ensuring that these parts remain in place, even under the high-stress conditions typical of engine operation.

The use of this specific screw in the Nissan ISV engines highlights the importance of compatibility and precision in engine assembly. The screw’s design and material properties are tailored to meet the demands of the engine’s operating environment, providing a dependable fastening solution that contributes to the overall performance and longevity of the engine.

Hexagon Flange Head Cap Screw (Part 4325266) in Engine Systems

The Hexagon Flange Head Cap Screw (Part 4325266) is a versatile fastener that plays a significant role in securing various components within engine systems. Its design and functionality make it suitable for multiple applications, ensuring reliable performance and durability.

Drive System Integration

In the drive system, the Hexagon Flange Head Cap Screw is often used to secure components such as pulleys, brackets, and mounting plates. These screws provide a strong and stable connection, which is essential for transmitting power efficiently from the engine to other parts of the vehicle. The flange head design offers additional surface area for torque application, reducing the risk of stripping and ensuring a tight fit.

Water Pump Assembly

Within the water pump assembly, these screws are employed to fasten the pump housing to the engine block or mounting bracket. This secure attachment is vital for maintaining the integrity of the cooling system, ensuring that the water pump can operate without leaks or misalignment. The flange head also aids in distributing the clamping force more evenly, which helps prevent damage to the pump housing.

Mounting Applications

For mounting applications, the Hexagon Flange Head Cap Screw is ideal for attaching various engine components to the chassis or other structural elements. Whether securing an engine mount, transmission bracket, or accessory housing, these screws provide a robust connection that can withstand vibrations and dynamic loads. The flange head offers additional stability, making it less likely for the screw to back out over time.

Refrigerant Compressor Attachment

In systems involving a refrigerant compressor, these screws are used to mount the compressor to the engine or frame. This secure attachment is important for maintaining the alignment and operational efficiency of the compressor. The flange head design ensures that the screw can be tightened to the appropriate torque specification, which is critical for the compressor’s performance and longevity.

Water Pump Drive Mechanism

The water pump drive mechanism often requires precise and reliable fastening to ensure consistent operation. Hexagon Flange Head Cap Screws are used to secure the drive components, such as the impeller and shaft, to the pump housing. This ensures that the drive mechanism remains aligned and functions smoothly, contributing to the overall efficiency of the cooling system.

Conclusion

The Hexagon Flange Head Cap Screw (Part 4325266) is an essential component in various engine systems, providing secure and stable connections that are vital for the reliable operation of these complex assemblies. Its robust design, resistance to corrosion, and ease of installation make it a preferred choice for fastening critical components in heavy-duty truck engines.