3940250
Hexagon Flange Head Cap Screw
Cummins®

The Cummins 3940250 Hexagon Flange Head Cap Screw is a critical component in the commercial truck industry, known for its robust design and reliable performance. Cummins, a leading manufacturer, produces this screw to meet the demanding requirements of commercial truck operations.

Basic Concepts

A Hexagon Flange Head Cap Screw is 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. This screw is essential for securely fastening components within a truck’s mechanical system, ensuring structural integrity and reliable operation.

Purpose and Role in Truck Operation

The 3940250 Hexagon Flange Head Cap Screw is utilized in various applications across commercial trucks. It is commonly employed in the fastening of critical components such as engine mounts, transmission housings, and chassis parts. By providing a secure and stable connection, this screw contributes to the overall durability and performance of the truck. Its design allows it to withstand significant stress and vibration, which are common in heavy-duty truck environments ¹.

Key Features

The 3940250 Hexagon Flange Head Cap Screw boasts several key features that enhance its functionality and durability. Its hexagonal head design facilitates easy and precise tightening using common tools. The flange at the base of the screw serves to distribute the load more evenly, reducing the risk of the screw pulling through the material. Additionally, the screw is typically made from high-strength materials, ensuring it can endure the rigors of commercial truck use. These features collectively contribute to the screw’s reliability and longevity in demanding applications ².

Benefits

Using the 3940250 Hexagon Flange Head Cap Screw in truck maintenance offers several advantages. The screw’s design enhances fastening security, minimizing the risk of loosening under vibration—a common issue in heavy-duty trucks. The flange also provides additional surface area, which can improve the screw’s holding power. Furthermore, the ease of installation and removal, thanks to its hexagonal head, allows for efficient maintenance procedures, reducing downtime and enhancing operational efficiency ³.

Installation and Usage

Proper installation of the 3940250 Hexagon Flange Head Cap Screw is vital to ensure optimal performance and longevity. It is recommended to follow torque specifications provided by the manufacturer to achieve the correct tension without overtightening, which could lead to damage. Using the appropriate tools and ensuring the mating surfaces are clean and free of debris will also contribute to a secure and lasting installation. Regular inspection and maintenance will help identify any issues early, ensuring continued reliable performance.

Troubleshooting and Maintenance

Common issues with the 3940250 Hexagon Flange Head Cap Screw may include loosening due to vibration or corrosion over time. Regular inspections can help identify such problems early. If loosening is detected, re-tightening to the specified torque is recommended. In cases of corrosion, cleaning the affected area and applying a suitable anti-corrosive treatment can help prolong the screw’s lifespan. Maintaining proper installation practices and conducting routine checks will ensure the screw remains in good condition, contributing to the overall reliability of the truck.

Cummins: Manufacturer Overview

Cummins is a renowned manufacturer in the commercial truck industry, with a history of producing high-quality automotive components. The company is known for its commitment to innovation, quality, and customer satisfaction. Cummins’ reputation is built on a foundation of rigorous testing, advanced manufacturing processes, and a dedication to meeting the needs of commercial truck operators. The 3940250 Hexagon Flange Head Cap Screw is a testament to Cummins’ expertise in designing and producing reliable fasteners for demanding applications.

Cummins Hexagon Flange Head Cap Screw 3940250 in Engine Applications

The Cummins Hexagon Flange Head Cap Screw, part number 3940250, is a critical component in the assembly and maintenance of various engine models. This part is specifically designed to provide secure fastening in high-stress environments, ensuring the integrity and reliability of the engine’s structure.

ISC CM554 Engine

In the ISC CM554 engine, the 3940250 screw is utilized in several key areas. It is often employed in securing the engine’s mounting brackets, ensuring that the engine remains firmly attached to the vehicle’s chassis. Additionally, this screw is used in fastening various engine covers and housings, which protect internal components from external elements and maintain the engine’s operational efficiency.

QSC8.3 CM554 Engine

Similarly, in the QSC8.3 CM554 engine, the 3940250 screw plays a vital role in the engine’s assembly. It is used to secure the engine’s mounting brackets, ensuring stability and reducing vibrations that could affect performance. Furthermore, this screw is integral in fastening the engine’s valve covers and other protective housings, safeguarding internal components and maintaining the engine’s operational integrity.

Common Usage Across Models

While the specific applications of the 3940250 screw may vary slightly between the ISC CM554 and QSC8.3 CM554 engines, its fundamental role remains consistent. This screw is essential in securing various engine components, ensuring that the engine operates smoothly and reliably. Its use in mounting brackets, valve covers, and other protective housings underscores its importance in maintaining the structural integrity and performance of these engines.

Hexagon Flange Head Cap Screw in Engine Systems

The Hexagon Flange Head Cap Screw (part 3940250) is integral to the assembly and functionality of various engine components. Its design ensures secure fastening and efficient load distribution, which is essential for the reliable operation of engine systems.

Lever

In the context of engine systems, levers are often used to transmit force or motion. The Hexagon Flange Head Cap Screw is employed to attach the lever to its mounting points. This secure attachment ensures that the lever can withstand operational stresses without loosening, thereby maintaining the precision of force transmission.

Rocker

Rockers in engine systems typically play a role in valve operation, converting the linear motion of pushrods into rotational motion for the valves. The Hexagon Flange Head Cap Screw is used to fasten the rocker to its pivot point. This secure connection is vital for the consistent and smooth operation of the rocker, ensuring that valve timing remains accurate.

Rocker Lever Assembly

The rocker lever assembly is a complex component that includes multiple parts working in unison to control valve operation. The Hexagon Flange Head Cap Screw is utilized to assemble various sub-components within the rocker lever assembly. Its flange head provides additional surface area for load distribution, reducing the risk of screw pull-out and enhancing the overall stability of the assembly.

Rocker Lever Top Level Assembly

In more intricate engine designs, the rocker lever top level assembly may include additional components such as adjusters or secondary levers. The Hexagon Flange Head Cap Screw is crucial for securing these top-level components to the main rocker lever assembly. This ensures that all parts remain aligned and function cohesively, contributing to the engine’s overall performance and durability.

By understanding the role of the Hexagon Flange Head Cap Screw in these components, engineers and mechanics can better appreciate its importance in maintaining the integrity and efficiency of engine systems.

Conclusion

The Cummins 3940250 Hexagon Flange Head Cap Screw is a vital component in the commercial truck industry, offering robust design, reliable performance, and ease of use. Its applications in engine mounts, transmission housings, and chassis parts contribute to the overall durability and performance of commercial trucks. Proper installation, regular maintenance, and understanding its role in engine systems ensure the continued reliability and efficiency of these vehicles.