4991058
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by Part #4991058, is a component manufactured by Cummins, a leader in the automotive and heavy-duty truck industry. This screw is significant in heavy-duty truck applications due to its robust design and reliable performance. Cummins is renowned for its commitment to quality and innovation, ensuring that their components meet the demanding requirements of the industry ¹.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by its hexagonal head and a flange beneath the head. The hexagonal head allows for efficient torque application using a wrench or socket, while the flange provides a bearing surface that distributes the load and prevents the screw from sinking into the material. This design is integral to mechanical systems where secure and stable fastening is required ².

Purpose and Role in Truck Operation

This Cummins part plays a specific role in the operation and maintenance of heavy-duty trucks. It is commonly used in applications where a high degree of stability and resistance to loosening is required. This includes fastening components in the engine, transmission, and chassis areas. Its design ensures that critical parts remain securely attached, contributing to the overall reliability and safety of the truck ³.

Key Features

The 4991058 features a hexagonal head that facilitates easy and precise tightening. The flange beneath the head provides additional stability by distributing the load and preventing the screw from embedding into the material. The screw is typically made from high-strength materials, ensuring durability and resistance to wear. These features collectively enhance the screw’s functionality and longevity in demanding applications.

Benefits

Using this part offers several benefits in truck maintenance and assembly. The hexagonal head design allows for efficient and consistent torque application, reducing the risk of over-tightening or under-tightening. The flange provides enhanced stability, minimizing the likelihood of the screw loosening over time. Additionally, the high-strength material ensures durability, making it suitable for heavy-duty applications where reliability is paramount.

Installation and Usage

Proper installation of the 4991058 is crucial for optimal performance. It should be installed using the appropriate torque specifications to ensure a secure fit without over-tightening. Using a wrench or socket that fits the hexagonal head precisely will help achieve the desired torque. It is also important to ensure that the flange is properly seated against the material to maximize stability and load distribution.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws include loosening due to vibration or inadequate torque, and corrosion in harsh environments. To address these issues, regular inspections should be conducted to ensure that screws remain tight and free from corrosion. If loosening is detected, the screw should be re-tightened to the specified torque. In corrosive environments, applying a protective coating can help prolong the lifespan of the screw.

Safety Considerations

When working with Hexagon Flange Head Cap Screws, it is important to follow safety practices to mitigate potential hazards. Always use the correct tools to apply torque, avoiding the use of improvised tools that may slip and cause injury. Wear appropriate personal protective equipment, such as gloves and safety glasses, to protect against flying debris or accidental contact with moving parts. Additionally, ensure that the work area is clean and free from obstacles to prevent accidents during installation or maintenance.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. Founded in 1919, Cummins has a long-standing reputation for quality and innovation in the automotive and heavy-duty truck industry. The company is committed to providing reliable and efficient components that meet the rigorous demands of modern transportation. Cummins’ dedication to excellence is evident in their comprehensive range of products, including the 4991058, which exemplifies their commitment to quality and performance.

Cummins Hexagon Flange Head Cap Screw 4991058 in Engine Applications

The Cummins Hexagon Flange Head Cap Screw, part number 4991058, is a critical component in various engine configurations. This screw is designed to provide a secure fastening solution, ensuring that engine parts remain tightly connected under operational stresses.

In the B3.3 engine series, the 4991058 screw is utilized in several key areas. It is often found securing the cylinder head to the engine block, which is essential for maintaining the integrity of the combustion chamber and preventing leaks. Additionally, this screw may be used in the assembly of engine accessories, such as the alternator or power steering pump, where it ensures that these components are firmly attached to the engine.

The precision engineering of the 4991058 screw allows it to withstand the high temperatures and pressures typical of engine environments. Its flange head design provides a larger bearing surface, distributing the load more evenly and reducing the risk of damage to the fastened parts.

In the broader context of Cummins engine applications, the 4991058 screw is a versatile component that can be found in various models and configurations. Its robust design and reliable performance make it a preferred choice for securing critical engine parts, ensuring the longevity and efficiency of the engine.

Role of Part 4991058 Hexagon Flange Head Cap Screw in Engine Systems

The part 4991058 Hexagon Flange Head Cap Screw is instrumental in securing and maintaining the integrity of various components within engine systems. In plumbing applications, this screw ensures that connections between pipes and fittings remain tight and leak-free, which is essential for the efficient transfer of fluids. Its flange head design provides additional surface area for torque application, reducing the risk of stripping and ensuring a robust seal.

In fuel systems, the 4991058 screw plays a significant role in attaching fuel lines to the fuel pump and other critical components. This securement is vital for maintaining the pressure integrity of the fuel lines, which is necessary for consistent fuel delivery to the engine. The flange head also aids in distributing the clamping force more evenly, minimizing the potential for damage to the fuel lines or fittings.

When it comes to the fuel pump, the 4991058 screw is often used to mount the pump to the engine block or fuel tank. This application requires a screw that can withstand vibrations and varying temperatures, ensuring that the fuel pump remains firmly in place and operates efficiently. The hexagonal flange head allows for easy tightening and loosening, facilitating maintenance and adjustments as needed.

Overall, the 4991058 Hexagon Flange Head Cap Screw is a versatile and reliable component that enhances the performance and durability of engine systems by providing secure and stable connections across various applications.

Conclusion

The 4991058 Hexagon Flange Head Cap Screw is a vital component in the automotive and heavy-duty truck industry, particularly in Cummins engine applications. Its robust design, reliable performance, and versatile applications make it an essential part for securing critical engine components. Proper installation, regular maintenance, and adherence to safety practices ensure the longevity and efficiency of this Cummins part in demanding environments.