2874478
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by Part #2874478, is a component manufactured by Cummins, a well-established name in the commercial truck industry. This screw is integral to the maintenance and assembly of commercial trucks, ensuring the secure fastening of various components. Cummins, known for its commitment to quality and innovation, produces this screw to meet the demanding requirements of heavy-duty applications ¹.

Basic Concepts

Hexagon Flange Head Cap Screws are designed with a hexagonal flange head, which provides a larger bearing surface and improved load distribution compared to standard screws. These screws are typically made from high-strength materials such as alloy steel, which ensures durability and resistance to wear. In the automotive industry, they are commonly used to fasten components that require high tensile strength and resistance to loosening, such as engine mounts, chassis parts, and other critical assemblies ².

Purpose and Function

The Hexagon Flange Head Cap Screw (Part #2874478) plays a significant role in the operation of commercial trucks by securely fastening components that are subject to substantial stress and vibration. Its design contributes to the structural integrity of the truck by providing a stable and reliable connection between parts. This screw helps maintain the alignment and performance of various truck components, ensuring that they function as intended under demanding conditions ³.

Key Features

The primary characteristics of the Hexagon Flange Head Cap Screw include its hexagonal flange head, which offers a larger contact area and enhances load distribution. The screw features precise threading specifications that ensure a secure fit and resistance to loosening. Additionally, the flange head design allows for easier installation and removal using standard tools, which is beneficial during maintenance procedures.

Benefits

Using Hexagon Flange Head Cap Screws in truck maintenance and assembly offers several advantages. These screws provide improved load distribution, which helps prevent component failure under stress. Their design enhances resistance to loosening, ensuring that connections remain secure over time. Furthermore, the ease of installation using common tools simplifies maintenance tasks and reduces the risk of damage to surrounding components.

Installation and Usage

Proper installation of the Hexagon Flange Head Cap Screw is crucial for optimal performance and longevity. It is recommended to use the appropriate torque specifications provided by the manufacturer to ensure a secure fit without over-tightening, which could lead to damage. Using the correct tools, such as a torque wrench, ensures that the screw is installed to the manufacturer’s specifications. Following best practices, such as cleaning the installation area and inspecting the screw for any defects before use, will help maintain the integrity of the fastening.

Troubleshooting and Maintenance

Regular inspection of Hexagon Flange Head Cap Screws is important to identify any signs of wear or damage. Common issues may include corrosion, thread damage, or loosening. If any of these issues are detected, the screw should be replaced to prevent potential failure. Maintenance practices, such as applying a thread locker and ensuring proper torque during reinstallation, can help prolong the service life of the screw.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and quality, Cummins has established a strong reputation in the commercial truck industry. The company is committed to providing reliable and high-performance components that meet the needs of demanding applications. Cummins’ dedication to quality is evident in their rigorous manufacturing processes and comprehensive product testing, ensuring that their components, including the Hexagon Flange Head Cap Screw, deliver exceptional performance and durability.

Hexagon Flange Head Cap Screw 2874478 in Cummins Engines

The Hexagon Flange Head Cap Screw part number 2874478, manufactured by Cummins, is a critical component in various Cummins engine models. This screw is designed to provide a secure fastening solution, ensuring that engine components remain tightly secured during operation.

Application in Cummins Engines

The 2874478 screw is utilized across a broad spectrum of Cummins engines, including the 15N, B5.9, ISX12, ISX12/ISX11.9, ISZ13, L8.9, QSK95, QSX11.9, QSZ13, and Z13/Z14 series. This part is integral in maintaining the structural integrity of the engine assemblies, ensuring that various components are fastened securely and remain in place under the demanding conditions of engine operation.

Grouping by Engine Series

• 15N, B5.9, ISX12, ISX12/ISX11.9, ISZ13, L8.9, QSK95, QSX11.9, QSZ13, Z13/Z14 Series: The 2874478 screw is commonly used in these engines to secure various engine components, including but not limited to, cylinder heads, valve covers, and other critical parts. Its design ensures that the fastening is robust and reliable, which is crucial for the longevity and performance of the engine.

• X12 CM2350 X119B: In the X12 CM2350 X119B engine, the 2874478 screw is employed to fasten components that require a high level of precision and strength. This includes securing parts that are exposed to high temperatures and pressures, ensuring that the engine operates efficiently and safely.

• Z13 Z108G: For the Z13 Z108G engine, the 2874478 screw is used to maintain the structural integrity of the engine by fastening components that are critical to the engine’s operation. Its design allows for easy installation and removal, facilitating maintenance and repair processes.

• Z14 CM2670 Z103B: In the Z14 CM2670 Z103B engine, the 2874478 screw is utilized to secure components that are subjected to significant mechanical stress. Its robust design ensures that these components remain securely fastened, contributing to the overall reliability and performance of the engine.

The 2874478 Hexagon Flange Head Cap Screw is a testament to Cummins’ commitment to quality and durability, providing a reliable fastening solution for a wide range of engine models.

Role of Part 2874478 Hexagon Flange Head Cap Screw in Engine Systems

The part 2874478 Hexagon Flange Head Cap Screw is integral to the secure assembly and operation of various engine components. Its robust design ensures reliable fastening in high-stress environments, contributing to the overall stability and efficiency of the engine system.

Auxiliary Cooling System Connections

In the auxiliary cooling system, the Hexagon Flange Head Cap Screw is used to fasten the auxiliary cooling inlet and outlet connections. This ensures a leak-proof seal, which is essential for maintaining the integrity of the cooling system. Proper sealing prevents coolant loss and ensures consistent cooling performance, which is vital for engine longevity.

Front Engine Support

The front engine support relies on the Hexagon Flange Head Cap Screw to secure the mounting brackets. This connection is fundamental for absorbing vibrations and maintaining engine alignment. A secure attachment here ensures that the engine remains stable during operation, reducing wear and tear on both the engine and its supporting structures.

Rocker Lever Assembly

Within the rocker lever assembly, the Hexagon Flange Head Cap Screw plays a role in fastening the lever to its pivot point. This secure attachment is necessary for precise valve operation, which directly impacts engine performance. A well-fastened rocker lever ensures accurate valve timing, contributing to efficient combustion and overall engine efficiency.

Turbocharger Arrangement

In the turbocharger arrangement, the Hexagon Flange Head Cap Screw is employed to secure the turbocharger to its mounting points. This is important for maintaining the turbocharger’s position and operational integrity. A secure fit prevents movement that could lead to misalignment, ensuring optimal airflow and turbo efficiency.

Turbocharger Coolant Plumbing

For the turbocharger coolant plumbing, the Hexagon Flange Head Cap Screw is used to fasten connections that route coolant to and from the turbocharger. This ensures that the coolant system remains intact, providing necessary cooling to the turbocharger and preventing overheating. Reliable fastening here is key to maintaining the turbocharger’s performance and durability.

Water Inlet and Outlet Connections

The water inlet and outlet connections also benefit from the use of the Hexagon Flange Head Cap Screw. These screws ensure that the water passages are securely sealed, allowing for efficient water flow through the engine’s cooling system. This is essential for maintaining optimal engine temperature and preventing overheating, which can lead to engine damage.

Conclusion

In summary, the Hexagon Flange Head Cap Screw is a versatile fastener that enhances the reliability and performance of various engine components. Its application across different systems underscores its importance in maintaining the structural and operational integrity of the engine.