3906733
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, Part #3906733 by Cummins, is a specialized fastener designed for use in fastening applications, particularly within the commercial truck industry. This screw is engineered to provide secure and reliable fastening, ensuring the integrity and functionality of various truck components and assemblies.

Basic Concepts and Functionality

A Hexagon Flange Head Cap Screw is characterized by its hexagonal head, which allows for secure fastening using a wrench or socket. The flange at the base of the head provides a larger bearing surface, which helps distribute the load and prevents the screw from being driven too far into the material. This design ensures that the screw remains flush with the surface, reducing the risk of damage to the fastened components and enhancing the overall stability of the assembly ¹.

Role in Truck Operation

This Cummins part plays a significant role in the operation of a truck by securing various components and assemblies. Its design ensures structural integrity and proper function of the truck’s systems. By providing a secure and stable connection, this screw helps maintain the alignment and performance of critical truck parts, contributing to the vehicle’s overall reliability and safety ².

Key Features

The 3906733 boasts several key features that enhance its performance and durability. These include its material composition, which is typically a high-strength alloy designed to withstand the rigors of commercial truck use. The screw features a specific thread type that ensures a tight and secure fit, and it may also include special coatings or treatments to improve corrosion resistance and longevity. These features collectively contribute to the screw’s ability to perform reliably in demanding environments ³.

Benefits

The benefits provided by the 3906733 include improved fastening security, resistance to loosening, and enhanced load distribution. These attributes contribute to the overall reliability and safety of the truck. The secure fastening provided by the hexagonal head and flange design reduces the likelihood of component failure due to loosening, while the load distribution capabilities help prevent damage to both the screw and the fastened materials.

Troubleshooting and Maintenance

To ensure the longevity and performance of the 3906733, regular inspections and proper maintenance practices are recommended. Common issues such as loosening or corrosion can be addressed through routine checks and the application of proper torque during installation. Additionally, following replacement guidelines and using appropriate lubricants can help maintain the screw’s performance over time.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including diesel engines, natural gas engines, and related technologies. With a history of innovation and a commitment to quality, Cummins has established itself as a trusted name in the commercial truck industry. The company’s expertise in engine and component design ensures that its products, like the 3906733, meet the high standards required for reliable and efficient truck operation.

Hexagon Flange Head Cap Screw 3906733 in Cummins Engines

The Hexagon Flange Head Cap Screw part number 3906733, manufactured by Cummins, is a critical component in various Cummins engine models. This screw is designed to secure different parts within the engine assembly, ensuring structural integrity and operational efficiency. Here’s how it fits into specific Cummins engine models:

ISC Series Engines

• ISC CM2150
• ISC CM554
• ISC CM850
• ISC8.3 CM2250

The ISC series engines utilize the 3906733 screw to fasten components that require a robust and reliable connection. This includes securing various engine covers and housings, ensuring that the engine operates smoothly and efficiently.

QSC Series Engines

• QSC8.3 CM2880 C102
• QSC8.3 CM554
• QSC8.3 CM850 (CM2850)
• QSC9 CM2250 / QSL9 CM2250

In the QSC series engines, the 3906733 screw is used to attach critical engine components, maintaining the structural integrity of the engine. These engines often require precise fastening to handle the high pressures and temperatures they operate under.

L Series Engines

• L8.9 CM2670 L134C

The L series engines, such as the L8.9 CM2670 L134C, use the 3906733 screw to secure various parts, ensuring the engine’s longevity and performance. This screw is particularly important in maintaining the alignment and stability of engine components.

G Series Engines

• 6C8.3
• C GAS PLUS CM556
• C8.3 G
• G8.3
• G8.3 CM558
• GTA8.3 CM558

The G series engines, including the 6C8.3, C GAS PLUS CM556, C8.3 G, G8.3, G8.3 CM558, and GTA8.3 CM558, incorporate the 3906733 screw to fasten parts that are critical to the engine’s operation. This includes securing the engine’s internal and external components, ensuring they remain tightly fastened under operational conditions.

ISL and QSL Series Engines

• ISL9 CM2150 SN
• QSL9 CM2250
• QSL9 CM2350 L102

The ISL and QSL series engines, such as the ISL9 CM2150 SN, QSL9 CM2250, and QSL9 CM2350 L102, use the 3906733 screw to secure various engine parts. This screw is essential for maintaining the alignment and stability of components within these engines, ensuring they perform optimally under various conditions.

Each of these engines relies on the 3906733 screw to maintain the integrity and performance of their respective components, making it a vital part in the overall engine assembly.

Role of Part 3906733 Hexagon Flange Head Cap Screw in Engine Systems

The 3906733 Hexagon Flange Head Cap Screw is instrumental in ensuring the secure assembly and reliable operation of various engine components. Its application is particularly significant in the context of dampers and vibration control systems.

Dampers

In engine systems, dampers are essential for absorbing and reducing vibrations that occur during operation. The Hexagon Flange Head Cap Screw plays a key role in fastening damper components to the engine block or other structural elements. This secure attachment ensures that the damper can effectively perform its function without the risk of loosening over time, which could lead to increased wear and potential failure of the damper.

Vibration Control

Vibration is a common issue in engine systems, arising from the reciprocating motion of pistons and the rotational forces of the crankshaft. Effective vibration management is vital for maintaining engine efficiency and longevity. The Hexagon Flange Head Cap Screw is used to mount vibration dampers and other vibration-reducing components. By providing a strong and stable connection, it helps ensure that these components can operate as intended, minimizing unwanted vibrations and the associated stress on engine parts.

Vibration Damper

A vibration damper is a specialized component designed to mitigate the effects of engine vibrations. It is often attached to the crankshaft or other moving parts. The Hexagon Flange Head Cap Screw is employed to secure the vibration damper in place, ensuring it remains firmly attached throughout the engine’s operation. This secure fastening is essential for the damper to effectively absorb and dissipate vibrational energy, contributing to smoother engine performance and reduced mechanical stress.

Conclusion

The 3906733 Hexagon Flange Head Cap Screw is a critical component in the commercial truck industry, providing secure and reliable fastening for various engine components. Its design and features ensure structural integrity, operational efficiency, and longevity in demanding environments. Regular maintenance and proper installation practices are essential to maximize the performance and lifespan of this Cummins part.