204736
Hexagon Head Cap Screw
Cummins®

Introduction

The Hexagon Head Cap Screw Part #204736 by Cummins is a specialized fastener designed for use in commercial truck maintenance. This screw plays a role in ensuring the structural integrity of various truck components by providing a secure and reliable fastening solution. Its design and material composition are tailored to withstand the demanding conditions encountered in heavy-duty truck operations.

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 torque application using a wrench or socket. The design of the cap screw includes a threaded shaft that engages with internal threads in the mating component, creating a strong and durable connection. In the automotive industry, cap screws are commonly used in applications where high strength and resistance to loosening are required ¹.

Purpose of the 204736 Hexagon Head Cap Screw in Truck Operation

This Cummins part is integral to the operation and maintenance of commercial trucks. It is employed in various assemblies where secure fastening is necessary to maintain structural integrity and performance. Common applications include fastening engine components, transmission parts, and chassis elements. The screw’s design ensures that it can handle the vibrations and stresses inherent in truck operations.

Key Features of the 204736 Hexagon Head Cap Screw

The 204736 features a robust design that includes a high-strength material composition, typically alloy steel, which provides excellent durability and resistance to wear. The screw has a coarse thread type that allows for quick and secure engagement with mating components. The hexagonal head design facilitates easy application of torque, ensuring a tight and reliable connection. These features contribute to the screw’s functionality and longevity in demanding truck applications.

Benefits of Using the 204736 Hexagon Head Cap Screw

Using this part offers several advantages. Its high-strength material and design provide enhanced fastening strength, making it suitable for critical applications where reliability is paramount. The screw’s resistance to loosening ensures that connections remain secure over time, even under dynamic conditions. Additionally, its compatibility with various truck components makes it a versatile choice for maintenance and repair tasks.

Installation and Usage Guidelines

Proper installation of the 204736 involves several steps to ensure a secure fit. Begin by cleaning the mating surfaces to remove any debris or corrosion. Insert the screw into the pre-drilled hole and use a wrench or socket to tighten it to the recommended torque setting, which is typically specified by the manufacturer. It is important to avoid over-tightening, as this can lead to damage or stripping of the threads. Following these guidelines will help achieve a secure and lasting connection.

Troubleshooting and Maintenance

Common issues with Hexagon Head Cap Screws include loosening over time due to vibrations or inadequate torque during installation. To identify these issues, regularly inspect fastening points for signs of movement or wear. Maintenance tips to prolong the lifespan of the screw include reapplying torque periodically and ensuring that mating surfaces remain clean and free of contaminants. Proper care and attention will help maintain the performance and reliability of the fastening solution.

Cummins: A Brief Overview

Cummins Inc. is a leading manufacturer in the commercial truck industry, known for its commitment to quality and innovation. Founded in 1919, Cummins has a long history of producing reliable and high-performance engine and component solutions. The company’s dedication to excellence is evident in its rigorous manufacturing processes and continuous investment in research and development. Cummins’ components, including the 204736, are designed to meet the demanding requirements of commercial truck applications.

Hexagon Head Cap Screw 204736 in Cummins Engines

The Cummins part number 204736, a Hexagon Head Cap Screw, is a critical component in various Cummins engine models. This screw is integral to the assembly and maintenance of the engines, ensuring secure fastening and stability.

QSK38 Series

In the QSK38 series, the Hexagon Head Cap Screw 204736 is utilized in both the QSK38 CM2150 MCRS and QSK38 CM850 MCRS engines. These engines are part of the Cummins QSK lineup, known for their robust performance and reliability in demanding applications. The screw is used in various assemblies, providing essential fastening for components that require precise alignment and secure attachment.

QSK50 Series

For the QSK50 series, the Hexagon Head Cap Screw 204736 is employed in three distinct engine models: QSK50 CM2150 K107, QSK50 CM2150 MCRS, and QSK50 CM2350 K108. These engines are designed for heavy-duty applications, and the screw plays a vital role in maintaining the integrity of the engine’s structure. It is used in multiple assemblies, ensuring that parts are fastened securely and remain in place under operational stresses.

QSK60 Series

In the QSK60 CM850 MCRS engine, the Hexagon Head Cap Screw 204736 is another essential component. This engine is part of the Cummins QSK60 lineup, which is engineered for high-performance and durability. The screw is used in various assemblies, providing the necessary fastening for components that require precise alignment and secure attachment.

Application Across Models

Across these engine models, the Hexagon Head Cap Screw 204736 is a versatile component that ensures the secure fastening of various parts. Its use in multiple assemblies highlights its importance in maintaining the structural integrity and operational efficiency of the engines. The screw’s design, with its hexagonal head, allows for easy and efficient tightening and loosening, making it a preferred choice for maintenance and assembly tasks.

Role of Part 204736 Hexagon Head Cap Screw in Engine Systems

The part 204736 is instrumental in securing various components within engine systems, ensuring their stability and proper function.

In the arrangement of engine components, this screw plays a significant role in fastening parts that require precise alignment. Its hexagonal head allows for efficient torque application, minimizing the risk of slippage during installation or removal.

Within the turbocharger system, the Hexagon Head Cap Screw is used to secure the turbocharger to the engine block or manifold. This ensures that the turbocharger remains firmly in place, even under high-stress conditions, allowing for optimal performance and durability.

In pump systems, particularly fuel and oil pumps, this screw is employed to attach pump housings and covers. It ensures that the pump components are tightly sealed, preventing leaks and maintaining the integrity of the pumping mechanism.

For fuel system components, such as fuel injectors and fuel rails, the Hexagon Head Cap Screw is utilized to secure these parts in place. This is essential for maintaining the correct fuel delivery pressure and ensuring that the fuel system operates smoothly.

In valve assemblies, whether intake or exhaust, this screw helps in attaching valve covers and other related components. It ensures that the valve train remains secure, contributing to the overall efficiency and reliability of the engine.

Lastly, in pressure regulator systems, the Hexagon Head Cap Screw is used to fasten the regulator housing and other critical components. This ensures that the pressure within the system is maintained at the desired levels, contributing to the engine’s performance and safety.

Conclusion

The 204736 Hexagon Head Cap Screw by Cummins is a vital component in the maintenance and operation of commercial trucks and Cummins engines. Its robust design, high-strength material, and efficient torque application make it an essential fastening solution for various engine and truck components. Proper installation, regular maintenance, and understanding its role in engine systems ensure the longevity and reliability of this critical part.