3084138
Hexagon Head Cap Screw
Cummins®

The Cummins Hexagon Head Cap Screw, part number 3084138, is a specialized fastener designed for use in commercial trucks. Cummins, a well-established name in the automotive and heavy-duty truck industry, manufactures this screw to meet the demanding requirements of truck applications. This part is integral to ensuring the secure fastening of various components within commercial trucks, contributing to the overall reliability and performance of the vehicle.

Basic Concepts of Hexagon Head Cap Screws

A Hexagon Head Cap Screw is a type of fastener characterized by its hexagonal head, which allows for efficient tightening and loosening using standard tools such as wrenches or sockets. These screws are commonly used in fastening applications where a high degree of torque is required. Mechanically, the hexagonal head provides a stable interface for applying force, ensuring that the screw remains securely in place under various operational conditions ¹.

Purpose and Role in Truck Operation

The 3084138 Hexagon Head Cap Screw plays a specific role in the operation and maintenance of commercial trucks. It is used to fasten critical components that are subject to significant stress and vibration. By providing a secure and durable connection, this screw helps maintain the integrity of truck components, ensuring they function correctly and safely. Its application ranges from engine components to chassis parts, highlighting its versatility and importance in truck maintenance.

Key Features

The 3084138 Hexagon Head Cap Screw boasts several key features that enhance its performance in heavy-duty applications. Its design includes a hexagonal head for easy tool engagement and a threaded shank for secure fastening. The screw is typically made from high-strength materials, such as alloy steel, to withstand the rigors of commercial truck use. Additionally, it may feature a corrosion-resistant coating to prolong its lifespan in harsh environments ².

Benefits

Using the 3084138 Hexagon Head Cap Screw offers several benefits. Its durable construction ensures long-lasting performance, even under demanding conditions. The screw’s resistance to loosening helps maintain secure fastenings over time, reducing the need for frequent re-tightening. Furthermore, its compatibility with standard tools makes it easy to install and remove, facilitating efficient maintenance procedures.

Installation Considerations

Proper installation of the 3084138 Hexagon Head Cap Screw is vital to ensure secure fastening. It is important to follow torque specifications provided by the manufacturer to avoid over-tightening, which can damage threads, or under-tightening, which can lead to loosening. Best practices include using the correct tool size to engage the hexagonal head fully and ensuring that the screw is aligned properly with the fastening hole to prevent cross-threading ¹.

Troubleshooting and Maintenance

Common issues with Hexagon Head Cap Screws, such as loosening or corrosion, can be addressed through regular maintenance. Inspecting screws for signs of wear or damage and tightening them as necessary can help prevent failures. In cases of corrosion, cleaning the screw and surrounding area, and applying a corrosion-resistant coating can prolong its lifespan. Regular maintenance ensures that the screw continues to perform reliably in its intended application.

Cummins: Manufacturer Overview

Cummins is a renowned manufacturer with a rich history in the automotive and heavy-duty truck industry. The company is known for its commitment to quality and innovation, producing a wide range of components that meet the highest standards of performance and reliability. Cummins’ reputation is built on its dedication to engineering excellence and customer satisfaction, making it a trusted name in the industry ².

Cummins Hexagon Head Cap Screw 3084138 in Engine Applications

The Cummins part number 3084138, a Hexagon Head Cap Screw, is a critical component in various engine assemblies. This screw is designed to secure different parts together, ensuring structural integrity and operational efficiency. Below is a detailed overview of how this screw fits into the specified engines.

K38 and K50 Engines

The K38 and K50 engines are part of Cummins’ K Series, known for their robust performance and reliability. The Hexagon Head Cap Screw 3084138 is utilized in these engines to fasten various components, such as cylinder heads, engine blocks, and other critical assemblies. This screw’s design allows for precise tightening, which is essential for maintaining the integrity of the engine’s internal components.

KTA38GC CM558 and QSK19 CM2350 K144G

In the KTA38GC CM558 and QSK19 CM2350 K144G engines, the Hexagon Head Cap Screw 3084138 plays a vital role in securing the engine’s mounting brackets and other structural elements. These engines are often used in heavy-duty applications, and the screw’s strength and durability are crucial for withstanding the rigors of such environments.

QSK50 CM2150 MCRS and QSK50 CM2350 K108

The QSK50 CM2150 MCRS and QSK50 CM2350 K108 engines are part of Cummins’ QSK Series, designed for high-performance applications. The Hexagon Head Cap Screw 3084138 is used in these engines to fasten components that require high precision and strength, such as turbocharger mounts and other critical engine parts. The screw’s design ensures that these components remain securely fastened under extreme conditions.

VTA903 CM2250 V105

The VTA903 CM2250 V105 engine is another example where the Hexagon Head Cap Screw 3084138 is employed. This engine is used in various industrial applications, and the screw’s role is to secure components that are subject to high stress and vibration. The screw’s design provides the necessary strength and durability to maintain the engine’s structural integrity.

Role of Part 3084138 Hexagon Head Cap Screw in Engine Systems

The 3084138 Hexagon Head Cap Screw is instrumental in securing various components within engine systems, ensuring stability and proper function.

• Aftercooler System: This screw is used to fasten the aftercooler to its mounting brackets, ensuring a secure and vibration-resistant connection. This is essential for maintaining the integrity of the cooling process and preventing leaks.
• Turbocharger Arrangement: The Hexagon Head Cap Screw is employed to secure the turbocharger housing to the engine block or manifold. This ensures that the turbocharger operates within its designed parameters, enhancing performance and reliability.
• Breather System: The screw is utilized to attach the breather housing to the crankcase. This connection is vital for managing crankcase pressure and ensuring that the breather system functions correctly, which is important for engine longevity.
• Crankcase Assembly: The screw plays a role in securing various covers and components, providing a sealed environment that is essential for engine operation.
• Connections: Such as those found in the water outlet and thermostat housing, the Hexagon Head Cap Screw ensures that these components are tightly secured. This prevents coolant leaks and maintains efficient engine cooling.
• Filter and Fuel Systems: Particularly the fuel filter bracket, the screw is used to secure the bracket to the engine or frame. This ensures that the fuel filter remains in place and functions correctly, which is important for fuel system integrity.
• Oil Pan Assembly: The screw is utilized to secure the pan to the engine block. This is essential for maintaining the oil reservoir’s integrity and preventing oil leaks.
• Remote Installation Kit: The Hexagon Head Cap Screw is used to secure various components that are part of the remote installation process. This ensures that all parts are correctly positioned and function as intended.

Conclusion

The Cummins Hexagon Head Cap Screw, part number 3084138, is a versatile and essential component in various Cummins engine models. Its application in securing critical engine parts ensures the engines’ reliability and performance across different applications. Proper installation, regular maintenance, and understanding its role in engine systems are crucial for maximizing the effectiveness of this part.

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