4394384
Hexagon Flange Head Cap Screw
Cummins®

The Cummins Hexagon Flange Head Cap Screw (Part #4394384) is a specialized fastener designed for use in commercial trucks. This article provides an overview of this Cummins part, its purpose, key features, benefits, and maintenance suggestions.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of bolt characterized by a hexagonal head and a flanged base. The hexagonal head allows for easy tightening and loosening using a wrench or socket, while the flange provides additional surface area for load distribution and prevents the screw from being driven too far into the material ¹.

Purpose and Function

The 4394384 Hexagon Flange Head Cap Screw is utilized in various applications within commercial trucks. It plays a role in securing components and assemblies, ensuring structural integrity and reliable performance. Common applications include fastening engine components, transmission parts, and chassis elements ².

Key Features

• Hexagonal head for easy tool engagement
• Flanged base for load distribution and prevention of over-driving
• High-strength material construction for durability
• Corrosion-resistant coating for enhanced longevity in harsh environments
• Precise threading for secure fastening ³

Benefits

• Reliable fastening solution for critical truck components
• Enhanced load distribution and reduced risk of component failure
• Easy installation and removal using standard tools
• Long-lasting performance in demanding truck operating conditions

Troubleshooting and Maintenance

Regular inspection of Hexagon Flange Head Cap Screws is recommended to ensure continued performance and safety. Look for signs of corrosion, loosening, or damage. Tighten screws as necessary using the appropriate torque specifications. Replace screws that show significant wear or damage to maintain optimal truck performance ⁴.

Cummins Hexagon Flange Head Cap Screw 4394384 in Engine Applications

The Cummins Hexagon Flange Head Cap Screw, part number 4394384, is a critical component in various engine assemblies. This screw is designed to secure different parts within the engine, ensuring structural integrity and operational efficiency.

B6.7 CM2670

In the B6.7 CM2670 engine, the 4394384 screw is utilized to fasten components that require a robust connection. Its flange head design provides a larger surface area for torque application, which is essential for maintaining the tight seals necessary in high-pressure environments. This screw is often found securing the cylinder head to the engine block, ensuring that the combustion chamber remains sealed during operation.

B153B

Similarly, in the B153B engine, the 4394384 screw plays a pivotal role in securing various engine components. Its application in this engine includes fastening parts that are exposed to significant mechanical stress and thermal variations. The screw’s design allows for easy installation and removal, which is crucial during maintenance procedures. It is commonly used in areas where precise alignment and secure fastening are critical, such as attaching the engine’s accessory housings.

Grouped Applications

In both the B6.7 CM2670 and B153B engines, the 4394384 screw is integral to the assembly process. Its use in these engines highlights its versatility and importance in maintaining the structural integrity of the engine. The screw’s design ensures that it can withstand the operational stresses of the engine, providing a reliable fastening solution.

By using the 4394384 screw in these engines, Cummins ensures that the components are securely fastened, which is vital for the engine’s performance and longevity.

Role of Part 4394384 Hexagon Flange Head Cap Screw in Engine Systems

The part 4394384 Hexagon Flange Head Cap Screw is instrumental in securing various components within engine systems, ensuring stability and proper function.

Aftertreatment Device

In the context of an aftertreatment device, the Hexagon Flange Head Cap Screw is used to fasten components such as catalytic converters, diesel particulate filters (DPF), and selective catalytic reduction (SCR) systems. These screws provide the necessary tension to keep the components firmly in place, which is essential for the efficient operation of the aftertreatment system. The flange head design ensures that the screw does not strip or loosen over time, maintaining the integrity of the connections even under high temperatures and vibrations typical in exhaust systems.

Sensor Bracket

For sensor brackets, the Hexagon Flange Head Cap Screw plays a key role in mounting oxygen sensors, temperature sensors, and pressure sensors to the engine or exhaust system. These sensors are vital for monitoring the performance and emissions of the engine. The screw’s design allows for easy installation and removal, which is beneficial during routine maintenance or sensor replacement. The flange head provides additional surface area for the wrench to grip, reducing the risk of damaging the screw or the sensor bracket during tightening or loosening.

In both applications, the Hexagon Flange Head Cap Screw ensures that components remain securely attached, contributing to the overall reliability and performance of the engine system.

Conclusion

The Cummins Hexagon Flange Head Cap Screw (Part #4394384) is a critical component in commercial truck engines, providing reliable fastening solutions for various applications. Its key features, including the hexagonal head and flanged base, ensure easy installation, enhanced load distribution, and long-lasting performance. Regular maintenance and inspection are essential to ensure the continued reliability and safety of the truck’s engine system.

References