3693409
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3693409, is a component manufactured by Cummins, a well-established name in the commercial truck industry. This screw is significant in the maintenance and assembly of commercial trucks, providing a reliable means to secure various components. Cummins, known for its robust and dependable parts, ensures that this screw meets the high standards required for heavy-duty applications.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by its hexagonal head and a flange—a flat, circular plate—underneath the head. This design allows for efficient tightening using a wrench or socket, while the flange distributes the load and prevents the screw from pulling through the material. In the automotive industry, these screws are commonly used to secure components that require a high degree of stability and resistance to vibration. In heavy-duty trucks, they are often employed in critical applications where structural integrity and durability are paramount ¹.

Purpose and Function

The 3693409 Hexagon Flange Head Cap Screw plays a role in the operation of a truck by securing various components, ensuring they remain firmly in place under dynamic conditions. This screw is particularly useful in applications where vibrations and mechanical stresses are common, such as in the engine compartment, chassis, and other structural elements. By providing a secure attachment point, it helps maintain the structural integrity of the truck, contributing to overall safety and performance ².

Key Features

The primary characteristics of the 3693409 Hexagon Flange Head Cap Screw include its hexagonal head design, which allows for easy and efficient tightening using standard tools. The flange feature under the head serves to distribute the load more evenly, reducing the risk of the screw pulling through the material. Additionally, the screw is typically made from high-strength materials, such as alloy steel, which enhances its durability and resistance to corrosion ³.

Benefits

Using the 3693409 Hexagon Flange Head Cap Screw offers several advantages. Its design enhances durability, making it suitable for heavy-duty applications where components are subjected to significant stress and vibration. The flange feature provides additional resistance to loosening, ensuring that the secured components remain stable over time. Furthermore, the hexagonal head allows for straightforward installation and removal, reducing the time and effort required during maintenance procedures.

Installation Process

Proper installation of the 3693409 Hexagon Flange Head Cap Screw is vital to ensure optimal performance and longevity. The following steps outline the installation process:

1. Preparation: Ensure the mating surfaces are clean and free of debris.
2. Alignment: Position the screw so that it aligns correctly with the hole in the component.
3. Insertion: Thread the screw into the hole by hand to avoid cross-threading.
4. Tightening: Use a wrench or socket to tighten the screw to the specified torque setting, ensuring it is secure without over-tightening.
5. Inspection: Verify that the screw is properly seated and that the flange is in full contact with the surface.

Troubleshooting and Maintenance

Common issues associated with Hexagon Flange Head Cap Screws include loosening due to vibration, corrosion, and damage from over-tightening. To identify problems, regularly inspect the screws for signs of wear, corrosion, or movement. Maintenance tips to prolong the screw’s lifespan include:

• Torque Settings: Adhere to the manufacturer’s recommended torque settings during installation.
• Corrosion Protection: Apply a corrosion-resistant coating if the application environment is harsh.
• Regular Inspections: Conduct routine checks to ensure screws remain tight and undamaged.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. Founded in 1919, Cummins has built a reputation for innovation, quality, and reliability. The company offers a broad range of products for various industries, including commercial trucks, where its components are known for their durability and performance. Cummins’ commitment to excellence is reflected in its extensive product line and long-standing presence in the commercial truck industry.

Hexagon Flange Head Cap Screw 3693409 in Cummins Engines

The Cummins Hexagon Flange Head Cap Screw part number 3693409 is a critical component in several Cummins engine models. This part is designed to secure various engine parts, ensuring structural integrity and operational efficiency. Here’s how it fits into the specified engines:

X15 CM2350 Series

• X15 CM2350 X116B
• X15 CM2350 X123B

In the X15 CM2350 series, the 3693409 screw is utilized in securing the engine’s cylinder head to the engine block. This ensures that the combustion chamber remains sealed, preventing leaks and maintaining optimal compression. Additionally, it is used in various other applications within the engine, such as fastening the intake manifold and exhaust manifold, which are crucial for the engine’s air and exhaust management.

X15 CM2450 Series

• X15 CM2450 X134B

For the X15 CM2450 X134B engine, the 3693409 screw serves similar functions as in the X15 CM2350 series. It is employed in securing the cylinder head, intake manifold, and exhaust manifold. Given the slightly higher power output of the X15 CM2450 series, the screw’s role in maintaining the structural integrity of these components becomes even more critical. The increased torque and stress on these parts necessitate a reliable fastening solution, which the 3693409 screw provides.

Application Across Models

The use of the 3693409 screw across different models within the X15 CM2350 and X15 CM2450 series highlights its versatility and importance in Cummins engine design. Its consistent application in securing key engine components ensures that the engines operate efficiently and reliably. This screw’s design, with its hexagonal flange head, allows for easy and secure installation, making it a preferred choice for these engine models.

Role of Part 3693409 Hexagon Flange Head Cap Screw in Engine Systems

The part 3693409 Hexagon Flange Head Cap Screw is integral to the assembly and functionality of various engine components, particularly those involved in the lubrication system.

In the lubricating oil pump, this screw plays a significant role in securing the pump housing to the engine block. Its flange head design ensures a tight and stable connection, which is essential for maintaining the integrity of the oil pump’s operation. The secure fit prevents oil leaks and ensures consistent oil flow, which is vital for the lubrication of moving parts within the engine.

When considering the lubricating oil pump kit, the Hexagon Flange Head Cap Screw is often included to facilitate the installation of the pump. Its design allows for easy tightening and removal, making it a preferred choice for both initial installation and maintenance procedures. The screw’s hexagonal flange head provides additional surface area for the wrench, reducing the risk of stripping and ensuring a firm grip during torque application.

In broader applications involving the pump and lubricating oil systems, this screw is used to attach various components that require a robust and reliable fastening solution. Whether securing the pump to the engine block or attaching additional components within the lubrication system, the screw’s design ensures that all parts remain firmly in place under the operational stresses of the engine.

Overall, the part 3693409 Hexagon Flange Head Cap Screw is a key component in ensuring the reliable and efficient operation of engine lubrication systems. Its robust design and secure fastening capabilities make it an essential part in the assembly and maintenance of these critical engine components.

Conclusion

The 3693409 Hexagon Flange Head Cap Screw is a vital component in the maintenance and assembly of Cummins engines, particularly within the X15 CM2350 and X15 CM2450 series. Its design, featuring a hexagonal head and flange, ensures secure and stable connections, which are critical for the structural integrity and operational efficiency of engine components. Proper installation and maintenance of this screw are essential to ensure the longevity and reliability of the engine systems it supports.