4090337
Hexagon Head Cap Screw
Cummins®

The Cummins 4090337 Hexagon Head Cap Screw is a specialized fastener designed for use in commercial trucks. Cummins, a well-established name in the commercial truck industry, produces a range of components that ensure the reliability and efficiency of truck operations. This part is integral to various fastening applications within these vehicles, contributing to their overall performance and durability.

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. Mechanically, it functions by converting rotational force into axial force, securing components together under tension. These screws are commonly used in applications requiring a high degree of fastening security and resistance to vibration ¹.

Purpose of the 4090337 Hexagon Head Cap Screw in Truck Operation

This Cummins part plays a role in the operation and maintenance of commercial trucks by securing various components and assemblies. It is utilized in applications where robust fastening is required, such as in the engine compartment, chassis, and other critical areas. Its design ensures that components remain securely fastened under the dynamic conditions experienced by commercial trucks.

Key Features

The 4090337 features a hexagonal head that provides a firm grip for tools, facilitating easy installation and removal. It is composed of high-strength materials, ensuring durability and resistance to wear. The screw’s threading is designed to offer a secure hold, minimizing the risk of loosening over time. Additionally, its unique attributes enhance performance and longevity in demanding truck environments.

Benefits

Using this part offers several advantages. It provides improved fastening security, ensuring that components remain firmly in place. Its design resists vibration, which is common in truck operations, reducing the likelihood of spontaneous loosening. Furthermore, it is compatible with standard tools, simplifying the installation and maintenance processes.

Installation and Usage

Proper installation of the 4090337 is vital for optimal performance. It should be installed with the correct torque specifications to ensure a secure fit without over-tightening, which could damage the screw or the components being fastened. Recommended tools include wrenches or sockets that match the hexagonal head size. Following best practices during installation helps to maintain the screw’s integrity and the overall reliability of the truck ².

Troubleshooting and Maintenance

Common issues with the 4090337, such as loosening or corrosion, can be addressed through regular inspection and maintenance. If loosening is detected, re-tightening to the specified torque is recommended. Corrosion can be prevented by applying a suitable protective coating and ensuring that the screw is installed in a clean, dry environment. Regular maintenance checks help to prolong the service life of the screw and the components it secures.

Compatibility and Applications

The 4090337 is designed for use in various applications within commercial trucks. It is commonly employed in the engine compartment, chassis, and other areas where secure fastening is crucial. Its compatibility with a wide range of truck components makes it a versatile choice for maintenance and repair tasks.

Cummins: Manufacturer 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 and innovation in the commercial truck industry. Its product range includes a variety of components and systems designed to enhance the performance, efficiency, and reliability of commercial vehicles.

Hexagon Head Cap Screw 4090337 in Cummins Engines

The Cummins Hexagon Head Cap Screw part number 4090337 is a critical component in several Cummins engine models. This screw is designed to provide secure fastening in various engine applications, ensuring the integrity and reliability of the engine’s structure.

KTA19GC and KTA19GC CM558

In the KTA19GC and KTA19GC CM558 engines, the 4090337 screw is used in several key areas. It is often employed in the engine’s mounting system, securing the engine to the chassis or foundation. Additionally, it plays a role in fastening various engine components, ensuring they remain tightly connected under operational stresses.

QSK19 CM500 and QSK19 CM850 MCRS

For the QSK19 CM500 and QSK19 CM850 MCRS engines, the 4090337 screw is utilized in similar applications. It is integral to the engine’s mounting system, providing the necessary strength to keep the engine stable. Furthermore, it is used in fastening various internal and external components, ensuring that all parts remain securely in place during operation.

QSK19G

In the QSK19G engine, the 4090337 screw is also a vital component. It is used extensively in the engine’s mounting and fastening systems. This screw ensures that all parts of the engine are securely attached, contributing to the overall durability and performance of the engine.

Each of these engines relies on the 4090337 screw to maintain structural integrity and operational efficiency. The screw’s design and material ensure it can withstand the high stresses and temperatures typical in engine environments.

Role of Part 4090337 Hexagon Head Cap Screw in Engine Systems

The 4090337 Hexagon Head Cap Screw is integral to the secure assembly and operation of various engine components. In the arrangement of the crankcase breather, this screw ensures that the breather is firmly attached, allowing for the efficient release of pressure and contaminants from the crankcase. This contributes to maintaining optimal engine performance and longevity.

Within the turbocharger system, the 4090337 screw is used to secure components that are essential for the turbocharger’s operation. It helps in maintaining the integrity of the turbocharger’s mounting and ensures that all parts are correctly aligned and under proper tension, which is vital for the turbocharger to function effectively and withstand the high-stress environment it operates in.

In the context of the coil bracket mounting, the 4090337 screw plays a significant role. It secures the coil bracket to the engine, ensuring that the ignition coil is held in the correct position. This is important for the consistent and reliable operation of the ignition system, as any misalignment or movement can affect the spark delivery to the cylinders.

The screw is also utilized in the attachment of the protective cover for various engine components. By securing the cover, it protects sensitive parts from debris, moisture, and other contaminants, thereby enhancing the durability and reliability of the engine.

Overall, the 4090337 Hexagon Head Cap Screw is a fundamental component in the secure assembly and reliable operation of several engine systems, including the crankcase breather arrangement, turbocharger, coil bracket mounting, and protective covers. Its role in these applications underscores the importance of using the correct fasteners to ensure the safety and efficiency of engine operations.

Conclusion

The Cummins 4090337 Hexagon Head Cap Screw is a critical component in the maintenance and operation of commercial trucks and engines. Its design and features ensure secure fastening, resistance to vibration, and compatibility with standard tools, making it an essential part for ensuring the reliability and efficiency of truck operations. Regular maintenance and proper installation are key to maximizing the performance and longevity of this part.