3863996
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3863996, is a component manufactured by Cummins, a well-established name in the automotive industry. This screw is significant in the realm of commercial trucks due to its robust design and reliable performance. 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 torque application using a wrench or socket, ensuring secure fastening. The flange provides additional surface area, which helps distribute the load more evenly and prevents the screw from sinking into the material ². Within a truck’s mechanical system, this screw is used to join various components securely, ensuring structural integrity and reliable operation.

Purpose and Role in Truck Operation

The Hexagon Flange Head Cap Screw plays a role in the operation of a truck by securely fastening critical components. It is commonly used in applications where high torque and resistance to loosening are required. These applications include, but are not limited to, engine mounts, transmission housings, and chassis components. By providing a strong and stable connection, this screw helps maintain the alignment and functionality of these parts, contributing to the overall performance and safety of the truck ³.

Key Features

The Hexagon Flange Head Cap Screw boasts several key features that make it suitable for heavy-duty applications. Its hexagonal head design allows for easy and precise torque application, reducing the risk of stripping or rounding. The flange beneath the head offers additional bearing surface, which helps in load distribution and prevents the screw from pulling through the material. Additionally, the screw is typically made from high-strength materials, such as alloy steel, to ensure durability and resistance to corrosion in demanding environments ⁴.

Benefits

The benefits of using the Hexagon Flange Head Cap Screw include enhanced fastening security, resistance to loosening, and durability. The hexagonal head design ensures that the screw can be tightened to the required torque without slipping, providing a secure connection. The flange helps prevent the screw from working loose over time, even under vibration and dynamic loads. Furthermore, the material properties of the screw contribute to its longevity, making it suitable for use in heavy-duty truck applications where reliability is paramount ⁵.

Installation and Usage

Proper installation of the Hexagon Flange Head Cap Screw is crucial for ensuring its effectiveness and longevity. When installing this screw, it is important to use the correct torque specifications to avoid over-tightening or under-tightening. The use of a torque wrench is recommended to achieve the precise torque required. Additionally, ensuring that the mating surfaces are clean and free of debris will help in achieving a strong and secure connection. Regular inspection and maintenance of the screw will also help in identifying any signs of wear or loosening, allowing for timely replacement or re-tightening ⁶.

Troubleshooting and Maintenance

Common issues related to the Hexagon Flange Head Cap Screw may include loosening, corrosion, or damage to the head or threads. Regular inspection during maintenance procedures can help identify these issues early. Signs of wear or failure may include visible corrosion, stripped threads, or a loose connection. If any of these issues are detected, the screw should be replaced to ensure the continued reliability and safety of the truck. Additionally, applying a thread locker or anti-seize compound during installation can help prevent loosening and corrosion, extending the lifespan of the screw ⁷.

Cummins: Manufacturer Overview

Cummins is a renowned manufacturer in the automotive industry, with a history of producing high-quality components for commercial vehicles. The company is known for its commitment to innovation, quality, and customer satisfaction. Cummins’ reputation is built on its ability to deliver reliable and durable products that meet the rigorous demands of heavy-duty applications. The Hexagon Flange Head Cap Screw is a testament to Cummins’ dedication to providing superior fastening solutions for the automotive industry ⁸.

Cummins Engine Compatibility with Hexagon Flange Head Cap Screw (Part 3863996)

The Cummins Hexagon Flange Head Cap Screw, part number 3863996, is a versatile component designed to fit various Cummins engines. This screw is integral in securing components within the engine assembly, ensuring structural integrity and operational efficiency.

Compatible Engines

• 4B3.9 and ISB3.9 CM2220 B107

  The 4B3.9 and ISB3.9 CM2220 B107 engines both benefit from the use of the 3863996 screw. This part is crucial in maintaining the alignment and stability of engine components, particularly in the cylinder head and valve cover areas.

• 6B5.9, B5.9 CM2670 B166C, ISB5.9 CM2880 B127, QSB5.9 CM2880 B139

  For the larger displacement engines such as the 6B5.9, B5.9 CM2670 B166C, ISB5.9 CM2880 B127, and QSB5.9 CM2880 B139, the 3863996 screw plays a pivotal role in securing the larger and more complex components. These engines, often used in heavy-duty applications, require robust fastening solutions to withstand the stresses of high-performance operations.

The 3863996 screw is engineered to provide a secure and reliable connection, ensuring that all engine parts remain firmly in place during operation. Its design and material composition make it suitable for the demanding environments these engines operate in, contributing to the overall durability and performance of the engine ⁹.

Role of Part 3863996 Hexagon Flange Head Cap Screw in Engine Systems

The part 3863996 Hexagon Flange Head Cap Screw is integral in securing various components within engine systems, ensuring their stability and proper function.

In the arrangement of engine components, this screw plays a significant role in fastening parts that require a robust and secure connection. Its flange head design provides additional surface area, enhancing the screw’s grip and reducing the risk of loosening over time.

For the cam follower cover, the Hexagon Flange Head Cap Screw is used to attach the cover securely to the engine block. This ensures that the cam follower operates within its designated space without interference, maintaining the precision of the valve timing.

The cover components, such as those protecting the cam followers and push rods, rely on this screw to maintain a sealed environment. This prevents contaminants from entering sensitive areas and ensures the longevity of the components.

In the cam follower system, the screw is employed to secure the followers to their respective shafts or tracks. This ensures that the cam followers move smoothly and consistently, which is essential for the accurate operation of the valve train.

The crankcase breather system utilizes this screw to attach the breather cover, allowing for the release of pressure build-up within the crankcase while preventing oil leaks. This maintains a clean and efficient operating environment for the engine.

For the fuel shut-off valve, the Hexagon Flange Head Cap Screw is critical in securing the valve housing to the engine. This ensures that the valve can operate without shifting, providing reliable fuel control and safety.

In the push rod cover, this screw is used to fasten the cover, protecting the push rods from external elements and ensuring they remain in optimal condition. This cover also helps in reducing noise and containing any potential leaks.

Lastly, in the valve system, the screw is utilized to secure valve covers and related components. This ensures that the valves operate within a sealed environment, promoting efficient combustion and engine performance.

Overall, the part 3863996 Hexagon Flange Head Cap Screw is a versatile fastener that contributes to the reliability and efficiency of various engine systems by providing a strong and secure connection between components ¹⁰.

Conclusion

The Hexagon Flange Head Cap Screw, part number 3863996, is a critical component in the automotive industry, particularly for heavy-duty truck applications. Manufactured by Cummins, this screw offers robust design, reliable performance, and compatibility with various Cummins engines. Its key features, including the hexagonal head and flange design, ensure secure fastening and resistance to loosening. Proper installation, regular maintenance, and timely replacement are essential for maintaining the screw’s effectiveness and the overall reliability of the truck. Cummins’ commitment to quality and innovation is evident in the design and functionality of this screw, making it a valuable component in engine systems.