3973471
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flanged Head Cap Screw (Part #3973471) manufactured by Cummins is a specialized fastener designed for use in heavy-duty truck components. This screw is significant due to its robust design and reliable performance, which contribute to the overall durability and efficiency of truck operations.

Basic Concepts

A Hexagon Flanged Head Cap Screw is characterized by its hexagonal head and flanged feature. The hexagonal head allows for secure tool engagement, facilitating easy installation and removal. The flange provides additional stability by distributing the load and preventing the screw from sinking into the material. This design ensures a firm and secure fastening in various applications.

Purpose and Role in Truck Operation

The Hexagon Flanged Head Cap Screw plays a role in heavy-duty trucks by securing various components and assemblies. It is used to fasten parts that require a high degree of stability and resistance to vibration. By maintaining structural integrity, this screw helps ensure the operational efficiency of the truck, reducing the risk of component failure under stress.

Key Features

The key features of the Hexagon Flanged Head Cap Screw include the hexagonal head for tool engagement, the flange for added stability, and the cap screw design for secure fastening. The hexagonal head allows for precise tightening with minimal risk of cam-out, while the flange enhances the screw’s ability to hold components in place under dynamic conditions. These features collectively contribute to the screw’s effectiveness in truck applications.

Benefits

The Hexagon Flanged Head Cap Screw offers several benefits, including enhanced fastening security, resistance to loosening, and ease of installation and removal. These advantages translate to improved performance and reliability in truck operations, ensuring that components remain securely fastened even under demanding conditions.

Installation Considerations

Proper installation of the Hexagon Flanged Head Cap Screw is important for optimal performance and longevity. It is important to adhere to torque specifications and use proper tightening techniques to avoid over-tightening or under-tightening, both of which can compromise the screw’s effectiveness and the integrity of the fastened components.

Troubleshooting and Maintenance

Common issues associated with Hexagon Flanged Head Cap Screws include loosening due to vibration and corrosion. Regular inspection and maintenance practices, such as checking for signs of wear or corrosion and ensuring proper torque, can help prolong the lifespan of the screw. Replacement should be considered if any damage or significant wear is detected to ensure continued reliable performance.

Cummins Overview

Cummins Inc. is a well-established company with a strong reputation in the automotive and heavy-duty truck industry. Founded in 1919, Cummins has a history of innovation and quality in manufacturing engine and power generation equipment. The company is known for its commitment to producing reliable and high-performance components, including fasteners like the Hexagon Flanged Head Cap Screw.

Cummins Engine Part 3973471: Hexagon Flanged Head Cap Screw

The Cummins part number 3973471, a Hexagon Flanged Head Cap Screw, is a component in the assembly and maintenance of various Cummins engines. This part is designed to provide secure fastening in applications that require high strength and durability.

Application in Cummins Engines

4B3.9 and B4.5 Engines

The 3973471 screw is commonly used in the assembly of the 4B3.9 and B4.5 engines. These engines are known for their reliability and performance in various applications, including agricultural and industrial machinery. The Hexagon Flanged Head Cap Screw ensures that components such as engine covers, brackets, and other structural parts are tightly secured, maintaining the integrity of the engine assembly.

QSB3.9 and 30 CM550 Engines

Similarly, the 3973471 screw plays a role in the QSB3.9 and 30 CM550 engines. These engines are designed for heavy-duty applications, often found in construction and transportation sectors. The robust design of the Hexagon Flanged Head Cap Screw ensures that the engine components withstand the high stresses and vibrations encountered in these demanding environments.

Importance of the Hexagon Flanged Head Cap Screw

The use of the Hexagon Flanged Head Cap Screw in these engines is important for several reasons:

• Secure Fastening: The hexagonal head provides a large surface area for wrenches, ensuring a secure and tight fit. ¹
• Durability: Made from high-quality materials, this screw can endure the rigors of continuous operation without failure. ²
• Ease of Installation: The flanged head allows for easy alignment and installation, reducing the time required for maintenance and repairs. ³

By integrating the 3973471 screw into the engine assembly, Cummins ensures that the engines maintain their structural integrity and operational efficiency over time.

Role of Part 3973471 Hexagon Flanged Head Cap Screw in Engine Systems

The part 3973471 Hexagon Flanged Head Cap Screw is instrumental in securing various components within engine systems, ensuring stability and proper function.

Oil Pan Assembly

In the oil pan assembly, this screw plays a role in attaching the oil pan to the engine block. The oil pan, which houses the engine’s lubricant, must be securely fastened to prevent oil leaks and ensure the oil remains contained within the system. The flanged head of the screw provides a larger surface area for distribution of clamping force, reducing the risk of stripping or damaging the threads in the oil pan material.

Oil Pan Mounting

When it comes to oil pan mounting, the 3973471 screw is often used to attach the oil pan to its mounting brackets or directly to the chassis. This secure attachment is vital for maintaining the oil pan’s position and alignment, which is essential for the proper functioning of the oil pump and overall lubrication system. The hexagonal flanged head allows for easy tightening and loosening using a socket wrench, facilitating efficient maintenance and repair procedures.

In both applications, the screw’s design ensures a robust connection that can withstand the vibrations and stresses encountered during engine operation. Its role in these components underscores the importance of using the correct fasteners to maintain engine integrity and performance.

Conclusion

The Hexagon Flanged Head Cap Screw (Part #3973471) by Cummins is a critical component in heavy-duty truck and engine applications. Its robust design, secure fastening capabilities, and ease of installation make it an essential part for maintaining the structural integrity and operational efficiency of various engine systems. Proper installation, regular maintenance, and timely replacement are key to ensuring the continued reliability and performance of this Cummins part.