5268682
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 5268682, is a specialized fastener produced by Cummins, a renowned manufacturer in the automotive industry. This screw is integral to the maintenance and operation of commercial trucks, providing a reliable solution for securing various components. Cummins, with its extensive history and reputation for quality, ensures that this part meets the rigorous demands of heavy-duty applications ¹.

Basic Concepts

Hexagon Flange Head Cap Screws are designed with a hexagonal head and a flange that sits against the surface being fastened. This design allows for efficient torque application and prevents the screw from sinking into the material. Typically made from high-strength materials such as alloy steel, these screws are engineered to withstand significant stress and provide durable fastening solutions. In the automotive industry, they are commonly used to secure engine components, chassis parts, and other critical assemblies ².

Purpose and Function

The Hexagon Flange Head Cap Screw plays a role in the operation of a truck by securely fastening components and ensuring structural integrity. Its design allows it to distribute clamping force evenly, which is vital for maintaining the alignment and stability of truck parts. Whether used in the engine compartment or the chassis, this screw helps to keep components in place under various operating conditions ³.

Key Features

The primary characteristics of the Hexagon Flange Head Cap Screw include its hexagonal head, which provides a secure grip for tools, and its flange, which offers additional surface contact to prevent the screw from embedding into the material. The cap screw functionality ensures that it can be driven into place without the need for a separate nut, simplifying the installation process. These features contribute to the screw’s effectiveness and reliability in heavy-duty applications.

Benefits

The Hexagon Flange Head Cap Screw offers several advantages, including enhanced fastening strength due to its design, which allows it to resist loosening under vibration and stress. The flange feature provides additional stability, while the hexagonal head ensures easy installation and removal with standard tools. These benefits make it a preferred choice for applications where reliability and durability are paramount.

Installation and Usage

Proper installation of the Hexagon Flange Head Cap Screw involves using the correct torque specifications to ensure optimal performance and longevity. It is important to follow best practices, such as using a torque wrench to apply the recommended torque, to avoid over-tightening or under-tightening. This ensures that the screw is securely fastened without damaging the threads or the surrounding material.

Maintenance and Troubleshooting

Routine maintenance practices can help prolong the lifespan of the Hexagon Flange Head Cap Screw. Regular inspections for signs of loosening, corrosion, or damage are recommended. If issues are detected, appropriate solutions such as re-torquing, cleaning, or replacing the screw should be implemented. Proper storage and handling practices can also prevent premature failure.

Safety Considerations

When working with the Hexagon Flange Head Cap Screw, it is important to follow safety precautions to mitigate risks and ensure workplace safety. This includes using the appropriate personal protective equipment, handling the screw carefully to avoid injury, and storing it in a secure location to prevent accidents. Proper disposal practices should also be followed to ensure environmental safety.

Cummins Overview

Cummins Inc. is a leading manufacturer in the automotive industry, known for its high-quality components and innovative solutions. With a history of excellence and a commitment to producing reliable parts, Cummins has established a strong reputation among commercial truck operators and maintenance professionals. The company’s dedication to quality is evident in its products, including the Hexagon Flange Head Cap Screw.

Cummins Engine Compatibility with Part 5268682

The Hexagon Flange Head Cap Screw, part number 5268682, manufactured by Cummins, is a versatile component that fits into various engine models. This screw is designed to secure different parts within the engine assembly, ensuring structural integrity and proper functioning.

Cummins B Series Engines

• B3.9 G
• B5.9 G
• B5.9 GAS PLUS CM556

The B series engines, including the B3.9 G, B5.9 G, and B5.9 GAS PLUS CM556, utilize the 5268682 screw in several critical applications. This screw is often used in securing components that require a robust and reliable fastening solution, such as cylinder heads, valve covers, and other engine blocks.

Cummins ISB/ISD Engines

• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB5.9G CM2180

The ISB/ISD engines, including the ISB/ISD4.5 CM2150 B119, ISB/ISD6.7 CM2150 SN, and ISB5.9G CM2180, also incorporate the 5268682 screw. These engines are known for their durability and performance, and the screw is used in various applications to ensure that all parts are securely fastened, contributing to the engine’s overall reliability.

Cummins ISBE Engines

• ISBE CM2150
• ISBE CM800
• ISBE4 CM850

The ISBE engines, such as the ISBE CM2150, ISBE CM800, and ISBE4 CM850, are equipped with the 5268682 screw in several key areas. This screw is essential for maintaining the structural integrity of the engine, particularly in securing components that are subject to high stress and vibration.

Cummins QSB Engines

• QSB4.5 CM850(CM2850)
• QSB6.7 CM850(CM2850)
• QSB6.7 M CM2250

The QSB engines, including the QSB4.5 CM850(CM2850), QSB6.7 CM850(CM2850), and QSB6.7 M CM2250, also utilize the 5268682 screw. This screw is crucial in securing various parts within these engines, ensuring that all components are properly fastened and aligned, which is vital for the engine’s performance and longevity.

Cummins B6.7 CM2670 B153B

The B6.7 CM2670 B153B engine incorporates the 5268682 screw in several critical applications. This screw is used to secure components that require a high level of precision and reliability, contributing to the engine’s overall performance and durability.

Role of Part 5268682 Hexagon Flange Head Cap Screw in Engine Systems

The Hexagon Flange Head Cap Screw is integral to the secure assembly and operation of various engine components. Its design and functionality contribute significantly to the stability and efficiency of the engine system.

Turbocharger Arrangement

In turbocharger arrangements, the Hexagon Flange Head Cap Screw is used to fasten the turbocharger to the engine block or exhaust manifold. This ensures a tight and secure connection, which is essential for the turbocharger to function correctly. The screw’s flange head provides additional surface area for torque application, reducing the risk of loosening under high-stress conditions.

Exhaust Manifold and Housing

The screw plays a vital role in attaching the exhaust manifold to the engine block and securing the turbocharger housing. This connection is critical for maintaining the integrity of the exhaust system, ensuring that exhaust gases are directed efficiently through the turbocharger and out of the engine. The flange head design of the screw helps distribute the clamping force evenly, preventing leaks and ensuring a robust seal.

Flywheel and Long Block Assembly

In the assembly of the flywheel to the crankshaft within the long block, the Hexagon Flange Head Cap Screw is employed to secure the flywheel in place. This is important for the smooth operation of the engine, as the flywheel helps to store rotational energy and smooth out the power delivery. The screw’s design ensures that the flywheel remains firmly attached, even under the high torque and vibrations experienced during engine operation.

Manifold and Exhaust Mounting

The screw is also utilized in mounting the intake and exhaust manifolds to the engine block. This secure attachment is necessary for the proper functioning of the engine’s air intake and exhaust systems. The flange head of the screw provides additional stability, ensuring that the manifolds remain in place and do not shift or vibrate loose during engine operation.

Overall Engine Stability

Across these applications, the Hexagon Flange Head Cap Screw contributes to the overall stability and reliability of the engine system. Its robust design and secure fastening capabilities are essential for withstanding the high temperatures, pressures, and vibrations inherent in engine operation.

Conclusion

The Hexagon Flange Head Cap Screw, part number 5268682, is a critical component in the maintenance and operation of commercial trucks. Its robust design, secure fastening capabilities, and compatibility with various Cummins engine models make it an essential part for ensuring the structural integrity and performance of engine systems. Proper installation, maintenance, and safety practices are vital for maximizing the lifespan and effectiveness of this Cummins part.