4975321
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by Part #4975321, is a specialized fastener produced by Cummins. This screw is integral to heavy-duty truck applications, where it is used to secure various components and ensure structural integrity. Cummins, a renowned manufacturer in the automotive industry, is known for its commitment to producing high-quality components designed to withstand the rigors of commercial vehicle operations ¹.

Basic Concepts

Hexagon Flange Head Cap Screws are designed with a hexagonal head and a flange feature, which provides a larger bearing surface and enhances the screw’s ability to distribute load more effectively. These screws are typically made from high-strength materials such as alloy steel, which offers superior durability and resistance to wear. In the automotive industry, they are commonly used to secure critical components, ensuring that parts remain firmly in place under various operating conditions ².

Purpose and Function

The Hexagon Flange Head Cap Screw plays a significant role in the operation of a truck by securing components and maintaining structural integrity. It is often used in applications where high torque is required, such as in the fastening of engine components, transmission parts, and chassis assemblies. The screw’s design allows for efficient torque application, ensuring that components are held securely in place, even under extreme vibrations and loads ³.

Key Features

The primary characteristics of the Hexagon Flange Head Cap Screw include its hexagonal head design, which provides a robust interface for wrenches, facilitating easy and secure tightening. The flange feature enhances the screw’s load-bearing capacity by distributing the force over a larger area, reducing the risk of component deformation. Additionally, the cap screw functionality ensures that the screw can be used with a nut or directly into a threaded hole, offering versatility in various applications.

Benefits

The Hexagon Flange Head Cap Screw offers several advantages, including enhanced torque application due to its hexagonal head, which allows for a firm grip during installation. The flange feature improves resistance to loosening, making it ideal for applications where vibrations are common. Furthermore, the high-strength materials used in its construction contribute to increased durability, ensuring long-term performance in demanding environments.

Installation and Usage

Proper installation of the Hexagon Flange Head Cap Screw is crucial for optimal performance and longevity. It is recommended to follow torque specifications provided by the manufacturer to ensure that the screw is tightened to the correct level, avoiding over-tightening, which can lead to damage, or under-tightening, which can result in loosening. Using the appropriate tools and techniques during installation will help maintain the screw’s integrity and effectiveness.

Troubleshooting and Maintenance

Common issues related to the Hexagon Flange Head Cap Screw include loosening and corrosion. Regular inspection and maintenance can help identify these problems early. If loosening is detected, re-tightening the screw to the specified torque is recommended. To prevent corrosion, applying a suitable anti-corrosive coating or lubricant can be beneficial, especially in environments where the screw is exposed to moisture or chemicals.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a rich history dating back to 1919, Cummins has established a strong reputation in the automotive industry for its innovative solutions and commitment to quality. The company’s dedication to manufacturing high-quality components for commercial vehicles underscores its role as a trusted partner in the industry.

Cummins Engine Compatibility with Hexagon Flange Head Cap Screw (Part 4975321)

The Cummins Hexagon Flange Head Cap Screw, identified by the part number 4975321, is a critical component in the assembly and maintenance of various Cummins engine models. This screw is designed to provide secure fastening in applications where a robust and reliable connection is essential.

15N CM2380 M104B

The 15N CM2380 M104B engine benefits from the use of the 4975321 screw in several critical applications. This engine, known for its durability and performance, relies on this screw to maintain the integrity of its components, ensuring optimal operational efficiency.

ISX12/ISX11.9 CM2250

In the ISX12/ISX11.9 CM2250 engines, the 4975321 screw is utilized in various fastening tasks. These engines are designed for heavy-duty applications, and the screw’s strength and reliability are crucial in maintaining the structural integrity of the engine’s components.

ISZ13 CM2150 Z105, QSZ13 CM2150 Z101, QSZ13 CM2150 Z102

The ISZ13 CM2150 Z105, QSZ13 CM2150 Z101, and QSZ13 CM2150 Z102 engines all incorporate the 4975321 screw in their design. These engines are part of a series known for their versatility and efficiency. The screw’s precision and durability are essential in ensuring that these engines operate smoothly and reliably.

Z13 Z108G, Z14 CM2670 Z103B

The Z13 Z108G and Z14 CM2670 Z103B engines also utilize the 4975321 screw. These engines are designed for specific applications where reliability and performance are paramount. The screw’s design ensures that the engine components are securely fastened, contributing to the overall efficiency and longevity of the engine.

In summary, the Cummins Hexagon Flange Head Cap Screw (Part 4975321) is a vital component in the assembly and maintenance of several Cummins engine models. Its use in these engines highlights its importance in ensuring the structural integrity and operational efficiency of the engines.

Role of Part 4975321 Hexagon Flange Head Cap Screw in Engine Systems

Part 4975321, the Hexagon Flange Head Cap Screw, is integral to the assembly and functionality of various engine components. Its design and application ensure secure fastening and reliable performance across different parts of the engine system.

Camshaft Assembly

In the camshaft assembly, the Hexagon Flange Head Cap Screw is used to secure the camshaft to the cylinder head. This ensures that the camshaft remains in precise alignment with the valve train, allowing for accurate timing and efficient operation of the valves. The screw’s flange head provides additional surface area for torque application, reducing the risk of stripping and ensuring a tight fit.

Connecting Rod and Piston

For the connecting rod and piston assembly, this screw plays a role in securing the connecting rod cap to the rod itself. This connection is vital for maintaining the integrity of the piston’s movement within the cylinder. The flange head design helps distribute the clamping force more evenly, which is essential for withstanding the high stresses and dynamic loads experienced during engine operation.

Cylinder Head and Head Gasket

When attaching the cylinder head to the engine block, the Hexagon Flange Head Cap Screw is often employed to ensure a leak-free seal between the head and the block. The screw’s design allows for consistent torque application, which is critical for maintaining the proper compression within the combustion chamber. Additionally, it helps in securing the head gasket in place, preventing any potential leaks that could compromise engine performance.

Injector Mounting

In fuel injection systems, the Hexagon Flange Head Cap Screw is used to mount injectors to the cylinder head. This secure attachment ensures that the injectors are held firmly in place, allowing for precise fuel delivery into the combustion chamber. The screw’s robust design helps in withstanding the high pressures and temperatures associated with fuel injection, contributing to overall engine efficiency and performance.

General Engine Parts

Across various engine parts, the Hexagon Flange Head Cap Screw is utilized for its reliability and ease of use. Whether securing brackets, covers, or other ancillary components, its flange head provides additional torque resistance and reduces the likelihood of screw head stripping. This makes it a versatile fastener in engine construction and maintenance.

Conclusion

In summary, part 4975321 Hexagon Flange Head Cap Screw is a fundamental component in ensuring the secure and efficient operation of multiple engine systems. Its application across different engine parts underscores its importance in maintaining the overall performance and reliability of the engine.