4387321
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 4387321, is a component manufactured by Cummins, a well-established name in the automotive and heavy-duty truck industry. This screw is integral to the assembly and maintenance of heavy-duty trucks, ensuring structural integrity and reliable performance under demanding conditions.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by a hexagonal head and a flange that sits against the surface to which it is being fastened. This design provides a larger bearing surface, which helps distribute the load more evenly and reduces the risk of the screw pulling through the material. In mechanical assemblies, these screws are commonly used to secure components that require a high degree of stability and resistance to vibration. Within a truck’s structure, they play a role in fastening critical components, ensuring that parts remain securely in place during operation ¹.

Role in Truck Operation

The 4387321 Hexagon Flange Head Cap Screw by Cummins is specifically designed to contribute to the operation and maintenance of commercial trucks. It is utilized in various applications where secure fastening is required, such as attaching body panels, securing engine components, and fastening chassis parts. The screw’s design allows it to withstand the dynamic loads and vibrations encountered in heavy-duty truck operations, thereby contributing to the overall reliability and safety of the vehicle ².

Key Features

The 4387321 Hexagon Flange Head Cap Screw features a robust design that includes a hexagonal head for easy tightening with standard tools and a flange that provides additional surface area for load distribution. The screw is typically made from high-strength materials, such as alloy steel, which enhances its durability and resistance to wear. Additionally, the screw may be coated or treated to improve corrosion resistance, making it suitable for use in various environmental conditions ³.

Benefits

Using the 4387321 Hexagon Flange Head Cap Screw offers several advantages. Its high-strength material composition ensures improved durability, allowing it to withstand the rigors of heavy-duty truck applications. The flange design enhances fastening capabilities by providing a larger bearing surface, which helps prevent the screw from pulling through the material. Furthermore, the screw’s resistance to corrosion and wear contributes to its reliability, reducing the need for frequent replacements and maintenance.

Installation Process

Proper installation of the 4387321 Hexagon Flange Head Cap Screw is vital to ensure optimal performance and longevity. The installation process should begin with cleaning the fastening area to remove any debris or contaminants. The screw should be inserted into the pre-drilled hole and tightened using a hexagonal socket or wrench. It is important to apply the correct torque specifications to avoid over-tightening, which can lead to damage, or under-tightening, which can compromise the fastening integrity. Using a torque wrench is recommended to achieve the precise tightening required.

Troubleshooting and Maintenance

Common issues with the 4387321 Hexagon Flange Head Cap Screw may include loosening due to vibration, corrosion, or wear. Regular inspections should be conducted to identify any signs of damage or loosening. If corrosion is detected, the affected area should be cleaned, and the screw may need to be replaced if significant damage is present. To address loosening, the screw should be re-tightened to the specified torque, and additional measures such as the use of lock washers or thread-locking compounds may be considered to enhance fastening security.

Cummins Overview

Cummins is a renowned manufacturer with a long-standing reputation in the automotive and heavy-duty truck industry. The company is known for its commitment to quality and innovation, producing a wide range of components that meet the demanding requirements of commercial vehicles. Cummins’ dedication to excellence is reflected in their rigorous testing and quality control processes, ensuring that their products, including the 4387321 Hexagon Flange Head Cap Screw, deliver reliable performance and durability in heavy-duty applications.

Cummins Hexagon Flange Head Cap Screw 4387321 in Engine Applications

The Cummins Hexagon Flange Head Cap Screw, part number 4387321, is a critical component in the assembly and maintenance of various engine models. This part is designed to provide secure fastening in high-stress environments, ensuring the integrity and performance of the engine systems it is used in.

ISF2.8 CM2220 F117 Engines

In the ISF2.8 CM2220 F117 engines, the 4387321 screw is utilized in several key areas. These engines are known for their robust design and efficiency, and the screw plays a vital role in maintaining the structural integrity of the engine components. The screw’s flange head design allows for a larger contact area, distributing the load more evenly and providing a stronger hold. This is particularly important in areas where the engine experiences significant vibration and stress.

Grouping of Engines

The ISF2.8 CM2220 F117 engines, along with other similar models, benefit from the use of the 4387321 screw in their assembly. This screw is engineered to withstand the demanding conditions these engines operate under, ensuring long-term reliability and performance. The consistent use of this screw across various engine models highlights its importance in the overall design and functionality of the engines.

Conclusion

The 4387321 Hexagon Flange Head Cap Screw is not just a simple fastener; it is a critical component that ensures the safe and efficient operation of the engines it is used in. Its design and material properties make it an ideal choice for the demanding environments these engines operate in.