4313344
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 4313344, is a component manufactured by Cummins, a prominent name in the commercial truck industry. This screw is designed specifically for use in heavy-duty vehicles, where it plays a significant role in securing various components. Its robust construction and specialized design make it suitable for the demanding conditions encountered in commercial trucking.

Basic Concepts

Hexagon Flange Head Cap Screws are characterized by their hexagonal head, which provides a larger surface area for torque application, and a flange that sits against the fastened material to distribute load and prevent the screw from pulling through. These screws are typically made from materials like alloy steel, which offer high tensile strength and resistance to wear. They function by converting torque into clamping force, which holds components together securely within mechanical systems ¹.

Purpose and Role in Truck Operation

The 4313344 Hexagon Flange Head Cap Screw serves a specific purpose in commercial trucks by securing critical components that are subject to significant stress and vibration. Its role is to maintain the integrity of assemblies, ensuring that parts remain firmly in place under operational conditions. This contributes to the overall functionality and reliability of truck components, which is vital for safe and efficient vehicle operation ².

Key Features

The 4313344 Hexagon Flange Head Cap Screw features a hexagonal flange head that allows for efficient torque application and reduces the risk of cam-out during installation. The threading specifications are designed to provide a strong grip, while the flange distributes the load across a larger area, enhancing the screw’s performance. These characteristics make it well-suited for applications where vibration resistance and secure fastening are required ³.

Benefits

Utilizing the 4313344 Hexagon Flange Head Cap Screw in truck maintenance and assembly offers several advantages. It provides improved fastening security due to its design, which resists loosening from vibration—a common issue in heavy-duty trucks. The ease of installation is another benefit, as the hexagonal head allows for straightforward application using standard tools.

Installation and Usage

Proper installation of the Hexagon Flange Head Cap Screw involves adhering to recommended torque settings to ensure a secure fit without over-tightening, which could damage the screw or the fastened material. Compatible fasteners and washers should be used to complement the screw’s function. Best practices include checking for proper alignment and ensuring that the flange sits flush against the material to maximize load distribution.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws may include loosening due to vibration or corrosion in harsh environments. Troubleshooting steps involve checking for proper torque, inspecting for signs of wear or damage, and ensuring that the screw is compatible with the application. Maintenance tips include regular inspection for signs of loosening or corrosion and re-torquing as necessary to maintain a secure fit.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a strong reputation in the commercial truck industry, Cummins is known for its commitment to quality and innovation. The company’s extensive product range includes a variety of components designed to enhance the performance and reliability of commercial vehicles.

Hexagon Flange Head Cap Screw (Part 4313344) in Cummins Engines

The Hexagon Flange Head Cap Screw, identified by part number 4313344, is a critical component in the assembly and maintenance of various Cummins engines. This part is integral to the structural integrity and operational efficiency of the engines, ensuring that components are securely fastened and aligned.

Application in QSK95 Engines

In the QSK95 series, the Hexagon Flange Head Cap Screw is utilized in several key areas. It is commonly employed in the engine’s head assembly, where it secures the cylinder head to the engine block. This ensures a tight seal, preventing leaks and maintaining the engine’s performance. Additionally, this screw is used in the mounting of various engine accessories, such as the alternator and air intake system, ensuring these components remain firmly in place during operation.

Application in CM2350 Engines

For the CM2350 engines, the Hexagon Flange Head Cap Screw is similarly essential. It is used extensively in the engine’s head and block assembly, providing the necessary strength and stability to withstand the high pressures and temperatures within the engine. This screw is also integral in securing the engine’s ancillary components, such as the turbocharger and exhaust manifold, ensuring they are properly aligned and fastened.

Application in K111 and K113 Engines

The K111 and K113 engines also benefit from the use of the Hexagon Flange Head Cap Screw. In these engines, the screw is used in the assembly of the engine’s head, block, and various support structures. Its role is crucial in maintaining the alignment and integrity of these components, which is vital for the engine’s overall performance and longevity.

Grouping of Engines

The Hexagon Flange Head Cap Screw is a versatile component that finds application across multiple Cummins engine models, including the QSK95, CM2350, K111, and K113. Its use in these engines highlights its importance in ensuring the secure and efficient assembly of engine components, contributing to the overall reliability and performance of the engines.

Role of Part 4313344 Hexagon Flange Head Cap Screw in Engine Systems

The 4313344 Hexagon Flange Head Cap Screw is integral to the assembly and functionality of several key components within engine systems. Its design and specifications make it particularly suited for applications where secure fastening and resistance to vibration are required.

Aftercooler

In the aftercooler, the 4313344 Hexagon Flange Head Cap Screw is often used to fasten the aftercooler housing to the engine block or other structural components. The flange head provides a larger surface area for distribution of clamping force, which helps in maintaining a seal and ensuring that the aftercooler remains securely in place despite the vibrations and thermal expansions typical in engine operation.

Housing

When it comes to various housings within the engine system, such as the turbocharger housing or the gearbox housing, the 4313344 screw plays a significant role. Its hexagonal flange head allows for easy tightening using a wrench, ensuring that the housing is firmly attached. This is particularly important in housings that contain high-pressure fluids or gases, where any leakage could lead to performance issues or safety hazards.

Front Gear

In the context of the front gear, the 4313344 Hexagon Flange Head Cap Screw is used to secure the gear to its shaft or housing. The screw’s design ensures that the gear remains aligned and does not loosen over time, which is essential for the smooth operation of the gear system. The flange head also provides additional torque resistance, which is beneficial in high-torque applications commonly found in engine systems.

Conclusion

Overall, the 4313344 Hexagon Flange Head Cap Screw is a versatile fastener that enhances the reliability and performance of various engine components by providing secure and vibration-resistant connections. Its application across multiple Cummins engine models underscores its importance in maintaining the structural integrity and operational efficiency of these engines.