3649081
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3649081, is a specialized fastener produced by Cummins, a renowned manufacturer in the automotive and heavy-duty truck industries. This screw is designed to meet the rigorous demands of commercial vehicle applications, providing reliable fastening solutions for various truck components.

Basic Concepts

The Hexagon Flange Head Cap Screw is characterized by its hexagonal head and flanged design. The hexagonal head allows for efficient torque application using standard tools, while the flange provides additional surface area for distribution of clamping force. This design is particularly beneficial in applications where vibration and dynamic loads are common, such as in heavy-duty trucks. The screw is commonly used in the assembly of engine components, chassis parts, and other critical truck systems where secure and durable fastening is required ¹.

Purpose and Role in Truck Operation

This Cummins part plays a significant role in the operation and maintenance of heavy-duty trucks. It is utilized in applications where components need to be securely fastened to flanged surfaces. This includes engine mounts, bracket assemblies, and various chassis components. The screw’s design ensures that it remains tightly secured, even under the harsh conditions encountered in commercial truck operations ².

Key Features

The 3649081 Hexagon Flange Head Cap Screw features a hexagonal head that facilitates easy and precise torque application. The flange at the base of the head provides additional contact area, enhancing the screw’s ability to distribute clamping force evenly. The screw is typically made from high-strength materials, such as alloy steel, to withstand the demanding environments of heavy-duty trucks. Threading specifications are designed to ensure a secure fit in corresponding tapped holes, contributing to the overall reliability of the fastening ³.

Benefits

One of the primary advantages of the 3649081 Hexagon Flange Head Cap Screw is its enhanced fastening security. The combination of the hexagonal head and flange design reduces the likelihood of loosening due to vibration. Additionally, the screw’s material composition provides excellent resistance to corrosion and wear, ensuring long-term durability. Its compatibility with flanged surfaces makes it a versatile choice for various truck components.

Installation Guidelines

Proper installation of the 3649081 Hexagon Flange Head Cap Screw is critical to ensure secure and reliable fastening. Begin by cleaning the mating surfaces to remove any debris or contaminants. Use a torque wrench to apply the specified torque, ensuring that the screw is tightened to the manufacturer’s recommended settings. It is advisable to use a thread lubricant to facilitate installation and reduce the risk of stripping. Follow best practices for tightening sequences to achieve even clamping force distribution.

Troubleshooting and Maintenance

Common issues with the 3649081 Hexagon Flange Head Cap Screw include corrosion, stripping, and loosening. Regular inspection and maintenance can help identify and address these problems. If corrosion is detected, clean the affected areas and apply a suitable corrosion-resistant coating. In the case of stripping, replace the damaged screw and ensure proper torque is applied during reinstallation. To prevent loosening, verify that the screw is correctly torqued and consider the use of lock washers or thread-locking compounds.

Safety Considerations

When working with the 3649081 Hexagon Flange Head Cap Screw, it is important to follow safety precautions to protect personnel and equipment. Use appropriate personal protective equipment (PPE), such as gloves and safety glasses, during installation and maintenance. Store screws in a dry, organized environment to prevent contamination and damage. Dispose of used or damaged screws in accordance with local regulations to ensure environmental safety.

Cummins Overview

Cummins is a leading manufacturer in the automotive industry, known for its high-quality components and innovative solutions for commercial vehicles. With a rich history of engineering excellence, Cummins has established a reputation for reliability and performance. The company is committed to producing durable and efficient parts that contribute to the safe and effective operation of heavy-duty trucks.

Cummins Hexagon Flange Head Cap Screw 3649081 in Engine Applications

The Cummins Hexagon Flange Head Cap Screw part number 3649081 is a critical component in various engine configurations, ensuring secure fastening and reliable performance. This screw is designed to withstand the demanding conditions found in heavy-duty engines, providing a robust connection where it is applied.

QSK50 Engine

In the QSK50 engine, the 3649081 screw is utilized in several key areas where secure fastening is paramount. Its design allows for efficient torque transmission, which is essential for maintaining the integrity of engine components under high stress. The screw’s flange head provides a larger surface area for better grip and distribution of forces, enhancing the overall stability of the engine assembly.

CM2350 and K108 Engines

The CM2350 and K108 engines also benefit from the use of the 3649081 screw. These engines, known for their durability and performance, require components that can endure significant mechanical loads. The hexagon flange head cap screw is strategically placed in areas where it must ensure the alignment and secure attachment of various engine parts. Its precision manufacturing guarantees that it meets the stringent requirements for these applications, contributing to the longevity and reliability of the engines.

Grouping of Engines

When considering the application of the 3649081 screw across the QSK50, CM2350, and K108 engines, it is evident that this component is integral to the structural integrity and operational efficiency of these engines. The screw’s design and material composition are tailored to meet the specific demands of these engines, ensuring that they perform optimally under various operating conditions.

Role of Part 3649081 Hexagon Flange Head Cap Screw in Engine Systems

Turbocharger Integration

In turbocharger systems, the part 3649081 Hexagon Flange Head Cap Screw is instrumental in securing various components that contribute to the turbocharger’s efficiency and durability. It is commonly used to fasten the compressor housing to the turbine housing, ensuring a tight seal that prevents leaks and maintains optimal pressure levels. Additionally, this screw is employed in attaching the turbocharger to the engine block or exhaust manifold, providing the necessary structural integrity to withstand high rotational speeds and thermal stresses.

Arrangement of Engine Components

The part 3649081 Hexagon Flange Head Cap Screw plays a significant role in the precise arrangement of engine components. It is often utilized in fastening critical components such as the cylinder head to the engine block. This secure attachment is vital for maintaining the engine’s structural stability and ensuring that the combustion process occurs within a sealed environment. Furthermore, it is used in securing ancillary components like fuel injectors, ensuring they remain firmly in place under the dynamic conditions of engine operation.

Enhanced Performance and Reliability

By providing a robust and reliable fastening solution, the part 3649081 Hexagon Flange Head Cap Screw contributes to the overall performance and reliability of engine systems. Its design allows for easy installation and removal, facilitating maintenance and repair processes. The screw’s flange head offers additional surface area for torque application, reducing the risk of stripping and ensuring a secure fit even in high-vibration environments. This reliability is essential for maintaining the integrity of engine components over extended periods of operation.

Conclusion

The 3649081 Hexagon Flange Head Cap Screw is a vital component in the automotive and heavy-duty truck industries, offering reliable fastening solutions for various truck and engine components. Its design, featuring a hexagonal head and flange, ensures secure and durable fastening, even under harsh operating conditions. Proper installation, regular maintenance, and adherence to safety guidelines are essential to maximize the performance and longevity of this Cummins part.