4004855
Hexagon Head Cap Screw
Cummins®

The Cummins part 4004855 Hexagon Head Cap Screw is a specialized fastener designed for use in commercial truck maintenance and operation. Cummins, a well-established name in the automotive industry, produces this screw to meet the rigorous demands of heavy-duty applications. This part is integral to ensuring the reliability and efficiency of various truck components, contributing to the overall performance and longevity of commercial vehicles.

Basic Concepts of Hexagon Head Cap Screws

A Hexagon Head Cap Screw is a type of bolt characterized by its hexagonal head, which allows for efficient tightening and loosening using a wrench or socket ¹. In the automotive industry, these screws are commonly used to secure components that require a high degree of stability and resistance to vibration. Mechanically, the hexagonal shape of the head provides a firm grip, reducing the risk of cam-out during installation and removal. The threading on the screw ensures a secure fit, distributing load evenly across the fastened components.

Purpose of the 4004855 Hexagon Head Cap Screw in Truck Operation

The 4004855 Hexagon Head Cap Screw plays a specific role in the operation and maintenance of commercial trucks. It is utilized in various truck components where secure fastening is required. This includes applications in the engine, transmission, and chassis, where the screw helps maintain the integrity of critical assemblies. By providing a reliable fastening solution, the 4004855 screw contributes to the safe and efficient operation of the vehicle.

Key Features of the 4004855 Hexagon Head Cap Screw

The 4004855 Hexagon Head Cap Screw is designed with several key features that enhance its performance. Its hexagonal head shape allows for easy and precise tightening using standard tools. The screw is threaded to ensure a secure fit, and it may include special coatings or treatments to improve corrosion resistance and durability. These features make the screw well-suited for the demanding conditions encountered in commercial truck applications.

Benefits of Using the 4004855 Hexagon Head Cap Screw

The 4004855 Hexagon Head Cap Screw offers several advantages. Its durable construction ensures long-lasting performance, even under heavy loads and harsh conditions. The screw’s design resists loosening, which is crucial in applications where vibration is a concern. Additionally, the ease of installation and removal simplifies maintenance procedures, reducing downtime and enhancing operational efficiency.

Installation and Usage Guidelines

Proper installation of the 4004855 Hexagon Head Cap Screw is vital to ensure its effectiveness. It should be installed using the appropriate torque specifications to achieve the correct tension without over-tightening, which could damage the screw or the fastened components. Recommended tools include a torque wrench and a socket or wrench that fits the hexagonal head. Following these guidelines ensures a secure and reliable fastening solution.

Troubleshooting Common Issues

Common issues with Hexagon Head Cap Screws include stripping and seizing. Stripping can occur if the screw is over-tightened or if the wrong tool is used. To prevent this, always use the correct torque specifications and ensure the tool fits properly. Seizing may happen due to corrosion or excessive heat. Regular inspection and maintenance can help identify and address these issues before they lead to more significant problems.

Maintenance Tips

Regular maintenance of the 4004855 Hexagon Head Cap Screw is important to ensure its longevity and reliable performance. This includes periodic inspection for signs of wear, corrosion, or loosening. If any issues are detected, the screw should be replaced to maintain the integrity of the fastened components. Additionally, keeping the screw and surrounding areas clean and free of debris can prevent contamination and extend the screw’s service life.

About Cummins

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 strong reputation in the commercial truck industry for producing high-quality, reliable components. The company’s extensive product range includes engines, powertrains, and aftermarket parts, all designed to meet the demanding needs of commercial vehicle operators.

Hexagon Head Cap Screw 4004855 in Cummins Engines

The Cummins Hexagon Head Cap Screw part number 4004855 is a critical component in several Cummins engine models, including the 6C8.3, ISM CM570, and ISM CM570/870. This screw is integral to the assembly and maintenance of these engines, ensuring secure fastening of various parts.

In the 6C8.3 engine, the 4004855 screw is used in several key areas, such as securing the cylinder head to the engine block, which is crucial for maintaining the integrity of the combustion chamber and preventing leaks.

For the ISM CM570 and ISM CM570/870 engines, the 4004855 screw plays a similar role. It is employed in the assembly of the engine block, ensuring that components such as the cylinder liners and various engine mounts are tightly fastened. This is particularly important in maintaining the structural integrity and operational efficiency of these engines.

The use of the 4004855 screw across these engines highlights its versatility and importance in Cummins’ engine design. Its consistent application across different engine models underscores its reliability and effectiveness in ensuring the secure assembly of critical engine components.

Role of Part 4004855 Hexagon Head Cap Screw in Engine Systems

In the intricate assembly of engine systems, the part 4004855 Hexagon Head Cap Screw serves as a fundamental fastening component. Its application spans across various engine components, ensuring secure and reliable connections.

Accessories

When it comes to engine accessories, the 4004855 Hexagon Head Cap Screw is often employed to attach components such as sensors, gauges, and control modules. These accessories require a stable and durable mounting solution to withstand the vibrations and operational stresses inherent in engine environments. The screw’s hexagonal head allows for efficient torque application, ensuring that accessories remain firmly in place throughout the engine’s operation.

Auxiliary Pump

In systems that incorporate an auxiliary pump, the 4004855 Hexagon Head Cap Screw plays a key role in securing the pump to its mounting bracket or directly to the engine block. This ensures that the pump operates within its designed parameters, providing consistent fluid flow or pressure as required by the engine’s lubrication or cooling systems. The screw’s design facilitates easy installation and removal, which is beneficial during maintenance or repair procedures.

Mounting

For engine mounting applications, the 4004855 Hexagon Head Cap Screw is utilized to fasten various brackets, plates, and supports that hold the engine in place within the vehicle’s chassis. Its robust construction and resistance to loosening under vibration make it an ideal choice for these critical connections. Proper mounting is essential for the engine’s stability and alignment, directly influencing the vehicle’s performance and safety.

Intake Connection

In the intake system, the 4004855 Hexagon Head Cap Screw is used to secure components such as intake manifolds, throttle bodies, and air filters. A secure connection in the intake system is vital for maintaining the correct air-fuel mixture and ensuring efficient engine operation. The screw’s ability to provide a tight seal helps prevent air leaks, which can adversely affect engine performance and emissions.

Conclusion

Overall, the 4004855 Hexagon Head Cap Screw is a versatile and reliable component in engine systems, contributing to the secure and efficient operation of various engine accessories, auxiliary pumps, mounting structures, and intake connections. Its consistent application across different engine models underscores its reliability and effectiveness in ensuring the secure assembly of critical engine components.