4006385
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 4006385, is a component manufactured by Cummins, a renowned name in the automotive industry. This screw is significant in the realm of commercial trucks, where it contributes to the secure assembly of various components. Cummins, known for its commitment to quality and innovation, produces this screw to meet the demanding requirements of heavy-duty applications ¹.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by its hexagonal head and a flange beneath the head. The hexagonal head allows for efficient tightening and loosening using a wrench, while the flange provides a larger bearing surface that distributes the load more evenly across the fastened material. In a truck’s mechanical system, this screw plays a role by securely joining components, ensuring structural integrity and reliable performance under various operating conditions ².

Purpose and Role in Truck Operation

This Cummins part is utilized in multiple applications within a truck’s mechanical system. It is commonly employed in the assembly of engine components, chassis parts, and other critical areas where secure fastening is required. Its role is to provide a strong, durable connection that can withstand the vibrations and stresses encountered in heavy-duty truck operations. This screw ensures that components remain firmly in place, contributing to the overall reliability and safety of the vehicle ³.

Key Features

The 4006385 Hexagon Flange Head Cap Screw boasts several key features that enhance its performance and durability. Its hexagonal head design allows for easy and precise tightening using standard tools. The flange beneath the head increases the bearing surface area, which helps in distributing the load more effectively and reducing the risk of damage to the fastened material. Additionally, the screw is typically made from high-strength materials, ensuring it can endure the rigors of heavy-duty use. The material composition often includes alloys that provide corrosion resistance, further enhancing its longevity in various environments ¹.

Benefits

The benefits of using the 4006385 Hexagon Flange Head Cap Screw include enhanced durability, improved fastening capabilities, and resistance to loosening. The robust design and high-strength material ensure that the screw can withstand significant loads and vibrations without failing. The flange feature contributes to a more secure connection by providing a larger surface area for load distribution. Additionally, the screw’s design helps prevent loosening over time, maintaining the integrity of the fastened components ².

Installation and Usage

Proper installation of the 4006385 Hexagon Flange Head Cap Screw is vital to ensure its effectiveness and longevity. It should be installed using the correct torque specifications to avoid over-tightening, which can lead to damage, or under-tightening, which can result in an insecure connection. Recommended practices include using a torque wrench to achieve the specified torque values and ensuring that the screw is aligned properly with the fastened components. Following these guidelines helps maintain the screw’s performance and the overall reliability of the truck ³.

Troubleshooting and Maintenance

Common issues with the 4006385 Hexagon Flange Head Cap Screw may include loosening over time or corrosion in harsh environments. To troubleshoot these problems, regular inspections should be conducted to check for signs of wear or corrosion. If loosening is detected, the screw should be re-tightened to the specified torque. In cases of corrosion, the affected screw may need to be replaced to ensure continued reliable performance. Maintenance tips include keeping the screw and surrounding areas clean and free of debris, which can contribute to corrosion and other issues ¹.

Cummins Overview

Cummins is a well-established company with a rich history in the automotive industry. Founded in 1919, Cummins has built a reputation for producing high-quality engines and components that are trusted by professionals worldwide. The company is committed to innovation, continually developing new technologies and solutions to meet the evolving needs of the industry. Cummins’ dedication to quality is evident in its products, including the 4006385 Hexagon Flange Head Cap Screw, which is designed to deliver reliable performance in demanding applications ².

Cummins Hexagon Flange Head Cap Screw 4006385 in Engine Applications

The Cummins Hexagon Flange Head Cap Screw 4006385 is a critical component in the assembly and maintenance of various Cummins engines. This part is specifically designed to provide secure fastening in high-stress environments, ensuring the integrity and reliability of engine assemblies.

QSK78 Engine Series

In the QSK78 engine series, the 4006385 screw is utilized in several key areas. It is often employed in securing engine covers, brackets, and other structural components that require robust fastening. The precision engineering of the screw ensures that it can withstand the operational stresses and temperatures inherent in these engines ³.

CM500 Engine Series

Similarly, in the CM500 engine series, the 4006385 screw plays a vital role in maintaining the structural integrity of the engine. Its application in this series includes fastening parts that are exposed to significant mechanical and thermal loads. The screw’s design allows for easy installation and removal, which is crucial during routine maintenance and repairs ¹.

General Application Considerations

The 4006385 screw is made from high-quality materials that offer excellent resistance to corrosion and fatigue. This makes it suitable for use in environments where exposure to moisture and other corrosive elements is common. Its hexagonal flange head provides a larger surface area for torque application, enhancing the fastening process and ensuring a more secure fit ².

In both the QSK78 and CM500 engine series, the use of the 4006385 screw is indicative of Cummins’ commitment to quality and durability. The screw’s design and material properties contribute to the overall performance and longevity of the engines, making it an essential component in their operation and maintenance ³.

Role of Part 4006385 Hexagon Flange Head Cap Screw in Engine Systems

The part 4006385 Hexagon Flange Head Cap Screw is integral to the assembly and functionality of various engine components. Its design and properties make it suitable for securing and maintaining the integrity of critical engine parts.

Housing

In engine systems, the housing serves as a protective enclosure for various components, ensuring they are shielded from external contaminants and stresses. The 4006385 Hexagon Flange Head Cap Screw plays a significant role in this context by providing a robust fastening solution. It secures the housing to the engine block or other structural elements, ensuring that the housing remains firmly in place under operational conditions. The flange head of the screw offers additional surface area for distribution of clamping force, reducing the risk of stripping or loosening over time ¹.

Thermostat

The thermostat is a temperature-sensitive valve that regulates the flow of coolant to the engine, ensuring it operates within optimal temperature ranges. The 4006385 Hexagon Flange Head Cap Screw is often used to mount the thermostat housing to the engine. This secure attachment is essential for maintaining a sealed environment around the thermostat, preventing coolant leaks and ensuring efficient thermal management. The screw’s hexagonal flange head allows for easy tightening and removal using standard tools, facilitating maintenance and replacement procedures ².

Conclusion

The 4006385 Hexagon Flange Head Cap Screw is a vital component in the automotive industry, particularly in the assembly and maintenance of heavy-duty trucks and engines. Its robust design, high-strength materials, and corrosion resistance make it suitable for demanding applications. Proper installation and maintenance are crucial to ensure its effectiveness and longevity, contributing to the overall reliability and safety of the vehicle ³.