4325251
Hexagon Flange Head Cap Screw
Cummins®

Introduction

The Cummins 4325251 Hexagon Flange Head Cap Screw is a specialized fastener designed for heavy-duty truck applications. It ensures secure and reliable fastening in various truck components, contributing to the vehicle’s integrity and performance. This screw is engineered to withstand demanding conditions, enhancing the truck’s durability and efficiency ¹.

Basic Concepts

A Hexagon Flange Head Cap Screw is characterized by its hexagonal head and flange beneath the head. The hexagonal head allows for easy tightening and loosening with a wrench or socket, while the flange distributes the clamping force more evenly. This design is ideal for applications where vibration and stress are common, ensuring firm component securing ².

Purpose and Role in Truck Operation

The 4325251 Hexagon Flange Head Cap Screw is vital for the operation and maintenance of heavy-duty trucks. It is used in engine mounts, exhaust systems, and chassis assemblies. By providing a secure fastening solution, this screw maintains the structural integrity of these components, ensuring they function correctly under heavy-duty use. Its applications extend to areas requiring vibration resistance and high clamping force ³.

Key Features

The Cummins 4325251 features a hexagonal head for easy and precise tightening. The flange beneath the head distributes the clamping force evenly, reducing the risk of component damage. Made from high-quality materials, this screw offers excellent resistance to corrosion and wear. These features enhance its functionality and durability, making it a reliable choice for heavy-duty truck applications.

Benefits

Using the 4325251 in truck applications offers several benefits. It provides enhanced fastening security, ensuring components remain firmly in place under vibration and stress. Its design facilitates ease of installation and removal, reducing maintenance time and effort. Additionally, its resistance to corrosion and wear contributes to its longevity, offering a cost-effective fastening solution for heavy-duty trucks.

Installation and Usage

Proper installation of the 4325251 is crucial for secure and lasting fastening. It is recommended to use the manufacturer’s torque specifications to achieve the correct clamping force without over-tightening. Best practices include cleaning the fastening area, using a precise wrench or socket, and periodically checking the tightness to maintain fastening integrity.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws include loosening due to vibration, corrosion, and wear. Regularly inspect screws for signs of loosening or damage. Tightening screws to the manufacturer’s torque specifications can address loosening, while replacing corroded or worn screws ensures continued performance. Applying an anti-seize compound during installation can help prevent corrosion and facilitate easier removal in the future.

Manufacturer - Cummins

Cummins Inc. is renowned in the automotive and heavy-duty truck industry for its commitment to quality and innovation. The company’s dedication to excellence is evident in its manufacturing processes and the durability of its products, including the 4325251 Hexagon Flange Head Cap Screw.

Cummins Hexagon Flange Head Cap Screw 4325251 in Nissan Engines

The Cummins Hexagon Flange Head Cap Screw, part number 4325251, is a critical component in various Nissan engines, particularly those utilizing the ISV (Intelligent Systems Vehicle) technology. This screw secures different parts within the engine assembly, ensuring structural integrity and operational efficiency.

In ISV engines, the 4325251 screw is used to fasten components requiring a robust connection, such as engine covers or housings. Its design, with a hexagonal flange head, provides a larger surface area for torque application, essential for maintaining tight and secure fastenings under operational stresses.

The use of this screw in Nissan engines is versatile, finding applications across various ISV engine configurations. Its design allows for easy installation and removal, crucial during maintenance and repair operations.

In summary, the Cummins Hexagon Flange Head Cap Screw 4325251 is fundamental in the assembly of Nissan ISV engines, ensuring critical engine components are securely fastened and remain in place during operation.

Role of Part 4325251 Hexagon Flange Head Cap Screw in Engine Systems

The 4325251 Hexagon Flange Head Cap Screw is instrumental in securing various components within engine systems, ensuring stability and proper function.

• Air Intake Connection: This screw fastens air intake components to the engine block or other structural elements, ensuring a secure fit and preventing air leaks that could affect engine performance.
• Air Transfer Connection: It connects air transfer components, maintaining efficient airflow within the engine system, vital for the proper functioning of the engine’s air management system.
• Water Inlet: The screw secures water inlet components, crucial for the engine’s cooling system. A secure connection ensures effective cooling water circulation, helping to maintain optimal engine temperature.
• Filter Connections: This screw attaches filter housings or components, ensuring the filtration system remains intact and functions correctly, important for maintaining the quality of fluids such as fuel and oil within the engine.
• Fuel System: It secures fuel lines or components, ensuring a reliable and leak-free fuel delivery system, essential for consistent fuel supply to the engine, directly impacting its performance and efficiency.
• Long Block Kit: In a long block kit, which includes essential engine components such as the block, crankshaft, pistons, and other critical parts, the Hexagon Flange Head Cap Screw is used to assemble and secure these components, ensuring the long block is structurally sound and ready for integration into the complete engine system.

Conclusion

The Cummins 4325251 Hexagon Flange Head Cap Screw is a vital component in heavy-duty truck and engine applications. Its design and features ensure secure fastening, resistance to corrosion and wear, and ease of installation and removal. Proper installation and maintenance practices are essential to maximize its benefits and ensure the longevity and performance of the components it secures.