2886978
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by Part #2886978, is a component manufactured by Cummins, a leader in the commercial truck industry. This screw is integral to the maintenance and operation of commercial trucks, providing secure fastening solutions that contribute to the overall reliability and performance of truck systems.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by its hexagonal head and flanged base. The hexagonal head allows for efficient torque application using standard tools, while the flange provides additional surface area to distribute load and prevent the screw from sinking into the material ¹. Within mechanical systems, these screws serve to securely join components, ensuring structural integrity and operational stability.

Purpose and Role in Truck Operation

This Cummins part plays a specific role in the operation and maintenance of commercial trucks. It is utilized in various truck components and systems where secure fastening is required. This includes, but is not limited to, engine components, chassis assemblies, and body panels. The screw’s design ensures that it can withstand the dynamic loads and vibrations encountered in truck operations, maintaining a secure connection over time.

Key Features

The Hexagon Flange Head Cap Screw boasts several key features that enhance its functionality and durability. Its hexagonal head design allows for precise and efficient tightening and loosening using common tools. The flange at the base of the screw provides additional bearing surface, which helps distribute the load and prevents the screw from pulling through the material. Additionally, the material properties of the screw, typically high-strength steel, contribute to its resistance to wear, corrosion, and fatigue, ensuring long-term reliability in demanding truck environments ².

Benefits

Utilizing the Hexagon Flange Head Cap Screw in truck maintenance offers several benefits. The design of the screw enhances fastening security, reducing the likelihood of loosening under vibration, a common issue in truck operations. The ease of installation and removal, facilitated by the hexagonal head, allows for quick and efficient maintenance procedures. Furthermore, the flange feature contributes to the screw’s resistance to pull-through, ensuring a stable and secure connection between components.

Installation and Usage Guidelines

Proper installation of the Hexagon Flange Head Cap Screw is crucial for optimal performance and longevity. Begin by ensuring the mating surfaces are clean and free of debris. Use a torque wrench to apply the recommended torque specification for the screw, avoiding over-tightening which can lead to damage. When removing the screw, use the appropriate tool to prevent damage to the hexagonal head. Regular inspection of the screw and its connection points is recommended to ensure continued secure fastening.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws include loosening due to vibration and corrosion. To address these issues, ensure that the screw is properly torqued during installation and consider the use of thread lockers in environments prone to vibration. Regular maintenance checks should be performed to inspect for signs of corrosion or wear. If corrosion is detected, the affected area should be cleaned, and the screw may need to be replaced to ensure a secure connection. Applying a protective coating can help prevent future corrosion.

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 quality, innovation, and reliability in the commercial truck industry. The company’s commitment to excellence is evident in its wide range of products, including the Hexagon Flange Head Cap Screw, which is designed to meet the rigorous demands of truck operations. Cummins’ focus on quality and innovation ensures that its components, like the Hexagon Flange Head Cap Screw, contribute to the efficient and reliable performance of commercial trucks.

Cummins Part 2886978: Hexagon Flange Head Cap Screw in Engine Applications

The Cummins part number 2886978, a Hexagon Flange Head Cap Screw, is a critical component in the assembly and maintenance of several engine models. This part is designed to provide a secure fastening solution, ensuring the integrity and performance of the engines it is used in.

Application in QSK60 CM850 MCRS Engines

In the QSK60 CM850 MCRS engines, the Hexagon Flange Head Cap Screw is utilized in various critical applications. Its design allows for precise torque application, which is essential for maintaining the structural integrity of engine components. This screw is often used in areas where high strength and durability are required, such as in the engine block and cylinder head assemblies.

Application in QSK95 CM2350 Engines

The QSK95 CM2350 engines also benefit from the use of the Hexagon Flange Head Cap Screw. This part is integral in securing various engine parts, ensuring that they remain tightly fastened under operational stresses. The screw’s flange head design provides a larger bearing surface, which helps in distributing the load more evenly and preventing over-tightening that could damage the engine components.

Specific Models within QSK95 CM2350

• QSK95 CM2350 K111: In this model, the Hexagon Flange Head Cap Screw is used in several key areas, including the attachment of engine mounts and the securing of certain internal components. Its robust design ensures that these parts remain securely fastened, contributing to the overall reliability of the engine.

• QSK95 CM2350 K113: Similar to the K111 model, the K113 variant also employs the Hexagon Flange Head Cap Screw in critical fastening applications. The screw’s ability to withstand high torque and its resistance to loosening under vibration make it an ideal choice for maintaining the structural integrity of the engine.

The consistent use of the Hexagon Flange Head Cap Screw across these engine models underscores its importance in ensuring the engines’ operational efficiency and longevity.

Hexagon Flange Head Cap Screw in Engine Systems

The Hexagon Flange Head Cap Screw, part number 2886978, is integral to the assembly and functionality of various engine components. Its robust design ensures secure fastening, which is essential for maintaining the integrity and performance of the engine system.

Cam Follower and Cam Follower Lever

In the valve train mechanism, the Hexagon Flange Head Cap Screw is used to secure the cam follower to the cam follower lever. This connection is vital for the precise operation of the valve timing, ensuring that the valves open and close at the correct intervals. The screw’s flange head provides additional surface area, enhancing the stability and reducing the risk of loosening under dynamic engine conditions.

Crankcase Breather Arrangement and Mounting

The crankcase breather system is essential for maintaining proper pressure within the crankcase. The Hexagon Flange Head Cap Screw is employed to fasten the crankcase breather arrangement to its mounting points. This secure attachment ensures that the breather system functions efficiently, allowing for the release of gases and moisture while preventing contaminants from entering the crankcase.

Cylinder Block

Within the cylinder block, the Hexagon Flange Head Cap Screw is utilized to attach various components such as sensor brackets, mounting plates, and ancillary equipment. Its flange head design offers enhanced torque application, ensuring that these components remain firmly in place despite the vibrations and stresses encountered during engine operation.

Turbocharger

In turbocharged engines, the Hexagon Flange Head Cap Screw plays a role in securing the turbocharger to the engine block or exhaust manifold. This fastening is crucial for maintaining the alignment and structural integrity of the turbocharger, which is subject to high rotational speeds and thermal stresses. The screw’s design ensures a reliable connection, contributing to the overall efficiency and performance of the turbocharger system.

Conclusion

The Hexagon Flange Head Cap Screw, part number 2886978, is a vital component in the maintenance and operation of commercial trucks and engines. Its design, featuring a hexagonal head and flanged base, ensures secure fastening and resistance to loosening under dynamic conditions. The screw’s application in various engine components, such as the cam follower, crankcase breather arrangement, cylinder block, and turbocharger, underscores its importance in maintaining the structural integrity and performance of these systems. Proper installation, regular maintenance, and the use of protective coatings are essential to ensure the longevity and reliability of this Cummins part in demanding truck environments.