4331790
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by Part #4331790, is a specialized fastener produced by Cummins, a leading manufacturer in the commercial truck industry. This screw is integral to the assembly and maintenance of various components within commercial trucks, ensuring secure and reliable fastening solutions. Cummins, known for its robust and high-quality parts, provides this screw as part of its extensive range of components designed to enhance the durability and performance of commercial vehicles ³.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of bolt characterized by its hexagonal head and a flange beneath the head. This design 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. Within a fastening system, this screw plays a role by securely joining components together, ensuring structural integrity and stability ¹.

Purpose and Role in Truck Operation

This Cummins part is specifically designed to meet the demanding requirements of commercial truck operations. It is used in various applications where secure fastening is required, such as in the attachment of engine components, chassis parts, and other critical assemblies. By providing a strong and reliable connection, this screw contributes to the overall safety and performance of the truck ³.

Key Features

The 4331790 Hexagon Flange Head Cap Screw features a hexagonal flange head, which facilitates easy installation and removal using standard tools. It is manufactured from high-strength materials, ensuring durability under heavy loads and harsh conditions. The screw’s threading specifications are designed to provide a secure fit and resist loosening due to vibration, which is common in truck operations ².

Benefits

Using the 4331790 Hexagon Flange Head Cap Screw offers several advantages. Its design enhances fastening security, making it less prone to loosening over time. The screw’s resistance to vibration ensures that connections remain tight, even under the dynamic conditions experienced by commercial trucks. Additionally, the ease of installation and removal simplifies maintenance procedures, reducing downtime and enhancing operational efficiency ³.

Installation Guidelines

Proper installation of this part involves several steps to ensure a secure and lasting connection. Begin by cleaning the mating surfaces to remove any debris or contaminants. Use a wrench or socket to insert and tighten the screw, ensuring it is perpendicular to the surface. Torque specifications should be followed to achieve the correct tension without over-tightening, which could damage the screw or the material. Recommended tools include a torque wrench for precise application of torque ¹.

Maintenance Tips

To ensure the longevity and optimal performance of the 4331790 Hexagon Flange Head Cap Screw, periodic inspection and maintenance are recommended. Inspect the screw and its connections regularly for signs of wear, corrosion, or loosening. Re-torque the screw as necessary to maintain the correct tension, especially after significant mileage or following repairs. Keeping the screw and its surroundings clean will also help prevent corrosion and extend its service life ³.

Troubleshooting Common Issues

Common issues associated with the 4331790 Hexagon Flange Head Cap Screw include loosening, corrosion, or damage. If loosening is detected, re-torque the screw to the specified value. Corrosion can be addressed by cleaning the affected area and applying a suitable corrosion-resistant coating. In the case of damage, assess whether the screw can be repaired or if replacement is necessary. Always follow manufacturer guidelines for troubleshooting and repairs ².

Safety Considerations

When working with the 4331790 Hexagon Flange Head Cap Screw, it is important to follow safety precautions to prevent accidents and ensure personal safety. Use the appropriate tools and equipment for installation and removal. Wear personal protective equipment, such as gloves and safety glasses, to protect against injury. Ensure that the work area is clean and free from hazards. Follow all manufacturer guidelines and safety instructions provided with the screw ³.

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 a reputation for innovation, quality, and reliability in the commercial truck industry. The company offers a wide range of products and services designed to meet the needs of customers in various sectors, including transportation, construction, and agriculture ³.

Hexagon Flange Head Cap Screw (Part 4331790) in Cummins Engines

The Cummins Hexagon Flange Head Cap Screw, identified by part number 4331790, is a critical component in the assembly and operation of several Cummins engine models. This part is integral to ensuring the structural integrity and operational efficiency of the engines.

Application in QSK95 Engines

The QSK95 engines, specifically the QSK95 CM2350 K111 and QSK95 CM2350 K113 variants, utilize the 4331790 screw in various capacities. These engines are known for their robust design and high performance, often used in heavy-duty applications such as marine and industrial settings. The screw’s role in these engines is to secure critical components, ensuring they remain tightly fastened under the strenuous conditions these engines operate in ³.

Structural Integrity and Performance

In the QSK95 CM2350 K111 and QSK95 CM2350 K113 engines, the 4331790 screw is employed in areas where both high strength and resistance to vibration are paramount. The flange head design provides a large surface area for torque application, which is essential for maintaining the alignment and tension of connected parts. This is particularly important in the high-stress environments these engines are designed to handle ².

Precision and Reliability

The precision engineering of the 4331790 screw ensures that it fits perfectly with the mating parts, reducing the risk of loosening over time. This reliability is crucial for the longevity and performance of the engines. The screw’s design also allows for easy installation and removal, which is beneficial during maintenance and repair operations ³.

Compatibility and Interchangeability

The 4331790 screw is designed to be compatible with the specific requirements of the QSK95 engines. Its interchangeability with other similar components ensures that it can be used across different parts of the engine, providing a standardized solution for securing various components. This compatibility is a testament to Cummins’ commitment to quality and consistency in their engine parts ³.

Hexagon Flange Head Cap Screw (Part 4331790) Component Usage

The Hexagon Flange Head Cap Screw, identified by part number 4331790, is an essential fastening component utilized in various engine systems, particularly within the pump and water systems. Its design and functionality are tailored to ensure secure and reliable connections in these components.

Pump Systems

In pump systems, the Hexagon Flange Head Cap Screw is employed to fasten critical components such as pump housings, impellers, and bearing assemblies. Its flange head design provides a larger surface area for distribution of clamping force, which is vital for maintaining the integrity of the pump’s structural components. This screw ensures that the pump housing remains securely attached to the engine block or mounting surface, preventing leaks and ensuring efficient operation of the pump ².

Water Systems

Within water systems, the Hexagon Flange Head Cap Screw is used to secure water pump components, such as the pump cover and water passages. It plays a significant role in maintaining the seal between the pump housing and the engine block, which is essential for preventing coolant leaks. Additionally, it is used in the attachment of thermostat housings and water distribution manifolds, ensuring that these components remain firmly in place under the varying pressures and temperatures experienced within the engine’s cooling system ³.

The robust design of the Hexagon Flange Head Cap Screw allows it to withstand the dynamic forces and environmental conditions present in both pump and water systems, making it a reliable choice for these applications. Its use contributes to the overall durability and performance of the engine systems it supports ².

Conclusion

The 4331790 Hexagon Flange Head Cap Screw is a critical component in the assembly and maintenance of commercial trucks and Cummins engines. Its design, featuring a hexagonal flange head, ensures secure and reliable fastening, enhancing the structural integrity and performance of various engine components. Proper installation, maintenance, and adherence to safety guidelines are essential to maximize the benefits of this screw, ensuring the longevity and efficiency of the vehicles and engines it supports ³.