3901445
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3901445 and manufactured by Cummins, is a specialized fastener designed for use in commercial truck maintenance. Cummins, a well-respected name in the industry, produces this screw to meet the demanding requirements of heavy-duty applications. This screw is integral to ensuring the reliability and efficiency of truck components, highlighting the importance of quality fasteners in commercial vehicle maintenance ¹.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of bolt characterized by its hexagonal head and flange feature. The hexagonal head allows for easy tightening and loosening using a wrench or socket, while the flange provides additional surface area to distribute the load and prevent the screw from sinking into the material. This design is particularly useful in mechanical systems where secure and stable fastening is required. Flange head cap screws are commonly used in applications where vibration resistance and a flush surface finish are necessary ².

Role in Truck Operation

The 3901445 Hexagon Flange Head Cap Screw plays a specific role in the operation and maintenance of commercial trucks. It is typically used in applications where components need to be securely fastened yet remain accessible for maintenance. This screw is often found in engine components, chassis assemblies, and other critical areas where durability and reliability are paramount. Its design ensures that it can withstand the rigors of heavy-duty use, providing a stable and secure connection that is less likely to loosen over time ³.

Key Features

The 3901445 Hexagon Flange Head Cap Screw boasts several key features that contribute to its functionality and durability. Its hexagonal head design allows for efficient torque application, making it easier to install and remove. The flange feature provides additional surface area, which helps distribute the load and prevents the screw from embedding into the material. Additionally, the screw is made from high-quality materials that offer excellent resistance to corrosion and wear, ensuring long-lasting performance in demanding environments ⁴.

Benefits

Using the 3901445 Hexagon Flange Head Cap Screw offers several benefits. The design of the screw enhances fastening security, reducing the risk of loosening due to vibration or other dynamic forces. The ease of installation and removal is another significant advantage, as the hexagonal head allows for straightforward torque application using common tools. Furthermore, the screw’s resistance to loosening ensures that critical components remain securely fastened, contributing to the overall reliability and safety of the truck ⁵.

Troubleshooting and Maintenance

Common issues associated with Hexagon Flange Head Cap Screws include loosening due to vibration, corrosion, and wear. To troubleshoot these issues, it is important to regularly inspect the screws for signs of damage or wear. If corrosion is detected, cleaning the affected area and applying a suitable anti-corrosion treatment can help mitigate the issue. Ensuring that the screws are properly torqued during installation can prevent loosening. Regular maintenance, including periodic checks and re-torquing, will help ensure the longevity and reliable performance of the screws ⁶.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a strong reputation in the commercial truck industry for producing high-quality, reliable components. The company’s extensive product range includes engines, powertrains, and aftermarket parts, all designed to meet the rigorous demands of heavy-duty applications. Cummins parts, including the 3901445 Hexagon Flange Head Cap Screw, are trusted by professionals for their durability, performance, and compatibility with a wide range of commercial vehicles ⁷.

Cummins Engine Compatibility with Hexagon Flange Head Cap Screw Part 3901445

The Cummins Hexagon Flange Head Cap Screw part number 3901445 is a versatile component designed to fit a variety of Cummins engines. This screw is engineered to provide a secure fastening solution, ensuring that engine components remain tightly secured during operation. Below is a detailed look at how this part fits with the listed Cummins engines:

15N CM2380 M104B

The 3901445 screw is compatible with the 15N CM2380 M104B engine, providing a reliable fastening solution for various engine components.

4B3.9, 6B5.9, 6C8.3

These engines, including the 4B3.9, 6B5.9, and 6C8.3, can utilize the 3901445 screw for securing critical parts, ensuring durability and performance.

B4.5 Series

The 3901445 screw fits seamlessly with the B4.5, B4.5 CM2350 B129B, and B4.5 RGT engines, offering a robust fastening option for these models.

B5.6, B5.9 Series

Engines such as the B5.6 CM2670 B152B, B5.9 CM2670 B166C, B5.9 G, B5.9 GAS PLUS CM556, and B6.7 CM2350 B135B can all benefit from the 3901445 screw, ensuring secure fastening of engine components.

B6.7 Series

The 3901445 screw is compatible with the B6.7 CM2670 B153B, B6.7 CM2670 B164C, B6.7 G CMOH6.0 B125, and B6.7S engines, providing a dependable fastening solution.

D4.0, F2.8, F3.8 Series

Engines like the D4.0 CM2620 D103B, F2.8 CM2620 F135B, F3.8 CM2350 F120B, F3.8 CM2350 F128C, F3.8 CM2620 F137B, F3.8 F102, F4.5 CM2620 F139B, and F4.5 CM2620 F141C can all use the 3901445 screw for secure fastening.

G8.3

The 3901445 screw is also compatible with the G8.3 engine, ensuring a reliable fastening solution for this model.

This screw’s compatibility across a wide range of Cummins engines highlights its versatility and importance in maintaining engine integrity and performance ⁸.

Role of Part 3901445 Hexagon Flange Head Cap Screw in Engine Systems

The Part 3901445 Hexagon Flange Head Cap Screw is instrumental in securing and maintaining the integrity of various components within engine systems. Its application spans across multiple critical areas, ensuring that each part functions as intended under operational conditions.

Air Intake and Fuel Systems

In the air intake connection, this screw plays a role in fastening components that direct airflow into the engine. It ensures that the arrangement remains secure, minimizing the risk of air leaks which could affect engine performance. Similarly, within the fuel control and fuel filter locations, it is used to mount brackets and secure the fuel filter, ensuring a consistent fuel supply to the engine ⁹.

Lubrication and Cooling Systems

For the lubricating oil pump and oil level gauge, the Hexagon Flange Head Cap Screw is employed in the mounting and securing processes. This ensures that the pump operates efficiently, providing necessary lubrication to moving parts, and that the oil level gauge accurately reflects the oil level within the system. In the water pump drive and turbocharger coolant plumbing, it secures components that are vital for maintaining optimal engine temperature, preventing overheating ¹⁰.

Structural and Mechanical Components

The screw is also pivotal in the cylinder block and flywheel housing, where it contributes to the structural integrity of these components. By securing the cylinder block, it ensures that the engine’s combustion process is contained and efficient. In the flywheel housing, it aids in maintaining the alignment and operation of the flywheel, which is essential for smooth engine operation ¹¹.

Electrical and Electronic Systems

Within the electronic control module wiring harness and drive components, the Hexagon Flange Head Cap Screw is used to secure wiring and electronic components. This ensures that electrical connections remain intact, facilitating reliable communication between the engine’s electronic control systems and its mechanical components ¹².

Alternative and Service Applications

In scenarios requiring an alternative device or during service kit applications, this screw is utilized to secure temporary or replacement components. Its versatility makes it a go-to fastener for ensuring that alternative setups are as secure and functional as the original configurations ¹³.

Turbocharger and Exhaust Systems

In the turbocharger arrangement and valve components, the screw is essential for securing parts that contribute to the turbocharger’s efficiency and the engine’s overall performance. It ensures that the turbocharger can operate within its designed parameters, enhancing engine power and efficiency ¹⁴.

Miscellaneous Applications

Beyond the aforementioned applications, the Hexagon Flange Head Cap Screw is also used in the mounting of the alternator, securing the oil fill and pan, and in the drive and fan components. Each application underscores its importance in maintaining the structural and operational integrity of the engine system ¹⁵.

Conclusion

The 3901445 Hexagon Flange Head Cap Screw is a critical component in the maintenance and operation of commercial trucks. Its design and features ensure secure fastening, durability, and resistance to loosening, making it an essential part for various engine systems. Regular maintenance and proper installation are key to maximizing the performance and longevity of this Cummins part.