4394442
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 4394442, is a specialized fastener produced by Cummins. This screw is integral to the assembly and maintenance of commercial trucks, providing secure fastening solutions that contribute to the overall reliability and performance of these vehicles. Cummins, a renowned manufacturer in the automotive industry, ensures that this component meets stringent quality standards, making it a trusted choice for professionals in the field ¹.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of bolt characterized by its hexagonal head and flanged base. The hexagonal head allows for efficient tightening and loosening using standard tools, while the flange provides additional surface area to distribute the load and prevent the screw from sinking into the material. Within mechanical systems, these screws serve to securely join components, ensuring structural integrity and proper function ².

Purpose and Role in Truck Operation

This Cummins part plays a significant role in the operation and maintenance of commercial trucks. It is used in various applications where secure fastening is required, such as attaching engine components, securing chassis parts, and joining structural elements. Its design ensures that connections remain tight under varying loads and conditions, contributing to the truck’s overall performance and safety.

Key Features

The 4394442 boasts several key features that enhance its functionality. Its hexagonal head design allows for easy and precise tightening using common tools. The flange at the base of the screw provides additional bearing surface, which helps distribute the load and prevents the screw from pulling through the material. Additionally, the screw is crafted from high-quality materials that offer excellent resistance to corrosion and wear, ensuring durability in demanding environments.

Benefits

Using this part offers several advantages. The hexagonal head design facilitates straightforward installation and removal, reducing the time and effort required for maintenance tasks. The flange enhances the screw’s ability to resist vibration, which is particularly important in the dynamic environment of a commercial truck. Furthermore, the high-quality material ensures long-lasting performance, minimizing the need for frequent replacements.

Installation and Usage

Proper installation of the 4394442 is vital to ensure optimal performance. It is recommended to use a torque wrench to achieve the specified torque settings, which helps prevent over-tightening or under-tightening. Best practices include cleaning the installation surface to remove any debris or contaminants that could affect the screw’s grip. Additionally, using a thread lubricant can facilitate easier installation and help prevent galling.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws include loosening due to vibration, corrosion, and wear. Regular inspections can help identify these problems early. If a screw appears loose, it should be re-tightened to the specified torque. Corrosion can be addressed by cleaning the affected area and applying a corrosion-resistant coating. In cases of significant wear or damage, the screw should be replaced to maintain the integrity of the connection.

Manufacturer - Cummins

Cummins is a well-established name in the automotive industry, known for its commitment to quality and innovation. With a rich history of producing reliable components, Cummins has built a reputation for excellence. The company’s dedication to research and development ensures that its products, including the 4394442, meet the highest standards of performance and durability. Cummins’ focus on customer satisfaction and continuous improvement makes it a preferred choice for professionals in the commercial truck industry ³.

Hexagon Flange Head Cap Screw (Part 4394442) in Cummins Engines

The Hexagon Flange Head Cap Screw, identified by the part number 4394442, is a critical component in several Cummins engine models. This screw is designed to provide secure fastening in applications where a strong, reliable connection is essential. The engines that utilize this part include:

• B6.7 CM2670 B153B
• L9 CM2670 L128B
• QSK95 CM2350 K113
• X11 CM2670 X126B
• X12 CM2670 X121B
• X13 CM2670 X122B

The flange head design of the screw allows it to sit flush against the mating surface, providing a clean and aesthetically pleasing finish. The hexagon shape ensures a robust grip, reducing the likelihood of rounding off the fastener during tightening. This is particularly important in high-stress environments typical of engine applications.

In the B6.7 CM2670 B153B and L9 CM2670 L128B engines, the Hexagon Flange Head Cap Screw is often used in areas where vibration resistance is crucial. These engines, known for their durability and efficiency, benefit from the screw’s ability to maintain a tight connection even under fluctuating conditions.

For the QSK95 CM2350 K113 engine, the screw’s design helps in securing various engine components, ensuring that they remain in place during operation. The robust nature of the screw is particularly beneficial in this model, which is designed for heavy-duty applications.

In the X11 CM2670 X126B, X12 CM2670 X121B, and X13 CM2670 X122B engines, the Hexagon Flange Head Cap Screw is used extensively across multiple assemblies. Its ability to provide a strong and reliable fastening makes it an ideal choice for these engines, which are known for their versatility and performance in various conditions.

Overall, the Hexagon Flange Head Cap Screw is an integral part of the engine assembly process, ensuring that all components are securely fastened and remain in place during operation.

Role of Part 4394442 Hexagon Flange Head Cap Screw in Engine Systems

The part 4394442 Hexagon Flange Head Cap Screw is integral to the assembly and functionality of various engine components.

Aftertreatment Device

In the context of an aftertreatment device, the Hexagon Flange Head Cap Screw secures components that are essential for reducing emissions. This screw ensures that the various modules within the aftertreatment system, such as the Diesel Particulate Filter (DPF) and Selective Catalytic Reduction (SCR) system, remain firmly attached. Its design allows for a robust connection that can withstand the high temperatures and vibrations typical in this environment. The flange head provides additional surface area for torque application, ensuring that the screw remains tight and the components stay in place over time.

Sensor Bracket

For sensor brackets, the Hexagon Flange Head Cap Screw plays a key role in mounting sensors that monitor various engine parameters. These sensors, which could include oxygen sensors, temperature sensors, or pressure sensors, need to be securely fastened to ensure accurate readings and long-term durability. The screw’s flange head design offers enhanced stability, preventing the sensor bracket from shifting or vibrating loose, which could lead to inaccurate data or sensor failure. This secure attachment is vital for maintaining the precision and reliability of engine management systems.

Conclusion

The 4394442 Hexagon Flange Head Cap Screw is a vital component in the assembly and maintenance of commercial trucks and Cummins engines. Its design, featuring a hexagonal head and flanged base, ensures secure fastening and resistance to vibration, corrosion, and wear. Proper installation and regular maintenance are essential to maximize its performance and longevity. Cummins’ commitment to quality and innovation ensures that this part meets the highest standards, making it a reliable choice for professionals in the automotive industry.