3910495
Hexagon Flange Head Cap Screw
Cummins®

Introduction

The Hexagon Flange Head Cap Screw, identified by part number 3910495, is a specialized fastener produced by Cummins, a leading manufacturer in the commercial truck industry. This screw is designed for use in various applications within commercial trucks, where it serves to secure components and ensure structural integrity. Understanding its purpose and basic concepts is fundamental for those involved in truck maintenance and assembly.

Basic Concepts

A Hexagon Flange Head Cap Screw is characterized by its hexagonal head and flange feature, which distinguishes it from other types of screws. The hexagonal head allows for efficient torque application using a wrench or socket, facilitating secure fastening. The flange, a flat, circular plate at the base of the screw’s head, provides additional surface area for distribution of the clamping force, reducing the risk of damage to the fastened material. This screw is classified as a cap screw, indicating its role in joining components together under tension ¹.

Role in Truck Operation

This Cummins part plays a significant role in the operation of a truck by securing critical components. Its application ensures that parts remain firmly in place, contributing to the truck’s structural integrity. The design of the screw, with its hexagonal head and flange, allows for easy assembly and disassembly, which is crucial during maintenance procedures. This feature not only saves time but also ensures that components are correctly aligned and securely fastened.

Key Features

The 3910495 boasts several key features that enhance its functionality and reliability. Its material composition is selected for durability and resistance to corrosion, ensuring long-term performance in the demanding environment of a commercial truck. The threading of the screw is designed to provide a strong grip on the fastened material, minimizing the risk of loosening over time. The flange and hexagonal head offer additional advantages by distributing clamping force more evenly and allowing for precise torque application.

Benefits

Utilizing the 3910495 in truck maintenance and assembly offers several benefits. Its durable construction and corrosion resistance contribute to the longevity of the fastening, reducing the need for frequent replacements. The ease of use, facilitated by the hexagonal head and flange, speeds up assembly and disassembly processes. Additionally, the design of the screw helps prevent loosening, ensuring that components remain securely fastened throughout the truck’s operation.

Troubleshooting and Maintenance

To ensure the longevity and proper function of the 3910495, regular maintenance and troubleshooting are recommended. Inspecting the screw for signs of wear or corrosion can help identify potential issues before they lead to failure. Applying the correct torque during installation is crucial to avoid over-tightening, which can damage the screw or the fastened material, and under-tightening, which can lead to loosening. In case of damage or failure, replacing the screw with a new one of the same specification is advised to maintain the integrity of the fastening.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history rooted in diesel engine technology, Cummins has expanded its expertise to include a wide range of power solutions. The company is renowned for its commitment to quality, innovation, and customer satisfaction, making it a trusted name in the commercial truck industry. Cummins’ products, including the 3910495, are designed with precision and reliability in mind, ensuring they meet the high standards required for commercial applications.

Hexagon Flange Head Cap Screw 3910495 in Cummins Engines

The 3910495, manufactured by Cummins, is a critical component in several of their engine models. This part is designed to secure various engine components, ensuring structural integrity and operational efficiency. Below is a detailed look at the engines where this screw is utilized, grouped where applicable for clarity.

4B3.9 and 6B5.9 Engines

The 4B3.9 and 6B5.9 engines both utilize the 3910495 screw in their assembly. This screw is often used to fasten components that require a secure and reliable connection, ensuring the longevity and performance of the engine.

B3.9 G, B4.5, and B4.5 CM2350 B129B Engines

In the B3.9 G, B4.5, and B4.5 CM2350 B129B engines, the 3910495 screw plays a crucial role in securing various engine parts. Its design allows for a tight and stable connection, which is essential for the proper functioning of these engines.

B4.5 RGT and B5.6 CM2670 B152B Engines

The B4.5 RGT and B5.6 CM2670 B152B engines also incorporate the 3910495 screw. This screw is used in areas where high precision and durability are required, ensuring that the engine components remain securely fastened under various operating conditions.

B5.9 CM2670 B166C, B5.9 GAS PLUS CM556, and B5.9 G Engines

The B5.9 CM2670 B166C, B5.9 GAS PLUS CM556, and B5.9 G engines utilize the 3910495 screw in their construction. This screw is essential for maintaining the structural integrity of these engines, particularly in areas subjected to high stress and vibration.

B6.7 CM2350 B135B, B6.7 CM2670 B153B, B6.7 CM2670 B164C, B6.7 G CMOH6.0 B125, and B6.7S Engines

The B6.7 CM2350 B135B, B6.7 CM2670 B153B, B6.7 CM2670 B164C, B6.7 G CMOH6.0 B125, and B6.7S engines all feature the 3910495 screw. This screw is used in multiple locations throughout these engines, ensuring that all components are securely fastened and properly aligned.

C8.3 G and D4.0 CM2620 D103B Engines

The C8.3 G and D4.0 CM2620 D103B engines incorporate the 3910495 screw in their design. This screw is essential for maintaining the structural integrity and operational efficiency of these engines, particularly in areas that are critical to engine performance.

F3.8 CM2350 F120B, F3.8 CM2350 F128C, F3.8 CM2620 F137B, F3.8 F102, F4.5 CM2620 F139B, and F4.5 CM2620 F141C Engines

The F3.8 CM2350 F120B, F3.8 CM2350 F128C, F3.8 CM2620 F137B, F3.8 F102, F4.5 CM2620 F139B, and F4.5 CM2620 F141C engines all utilize the 3910495 screw. This screw is crucial for securing various engine components, ensuring that the engines operate smoothly and efficiently.

G5.9 Engine

The G5.9 engine also incorporates the 3910495 screw in its construction. This screw is used in key areas of the engine to ensure that all components are securely fastened and properly aligned, contributing to the overall performance and reliability of the engine.

Role of Part 3910495 Hexagon Flange Head Cap Screw in Engine Systems

The Hexagon Flange Head Cap Screw, identified by part number 3910495, is integral in securing and maintaining the integrity of various engine components. Its application spans across multiple systems, ensuring that each part functions optimally and remains securely in place.

Aftercooler and Turbocharger Systems

In the aftercooler and turbocharger systems, the Hexagon Flange Head Cap Screw is used to fasten components such as the turbocharger bracket mounting and the turbocharger guard. This ensures that the turbocharger remains stable and operates efficiently, enhancing the engine’s performance by maintaining optimal airflow and pressure.

Breather and Crankcase Systems

Within the breather and crankcase systems, this screw plays a role in securing the breather connection and the crankcase components. It helps in maintaining the seal and structural integrity, which is essential for managing crankcase ventilation and preventing oil leaks.

Exhaust and Raw Water Systems

For the exhaust outlet connection and the raw water inlet connection, the Hexagon Flange Head Cap Screw is vital. It ensures that these connections are tight and secure, preventing any leaks that could affect the engine’s exhaust efficiency and cooling system performance.

Drive Systems

In drive systems, such as the alternator drive and the front gear train accessory drive, this screw is used to secure the fan drive and the front engine support. This is important for maintaining the alignment and operation of accessories driven by the engine, ensuring they function without undue stress or failure.

Fuel and Lubrication Systems

The Hexagon Flange Head Cap Screw is also employed in the fuel system assembly and the lubricating oil filter mounting. It secures components like the fuel filter and the plumbing within the fuel and power steering assemblies, guaranteeing a consistent and clean supply of fuel and lubricants to the engine.

Cooling and Heat Exchanger Systems

In the engine cooling fan system and the auxiliary cooling system, this screw fastens the shroud and the heat exchanger housing. This is essential for maintaining the efficiency of the cooling process, ensuring that the engine operates within safe temperature ranges.

Structural and Support Systems

Finally, in structural and support systems such as the rock shield support and the rear gear housing, the Hexagon Flange Head Cap Screw provides the necessary strength and stability. This is crucial for withstanding the vibrations and stresses inherent in engine operation, thereby prolonging the lifespan of these components.

Conclusion

The 3910495 Hexagon Flange Head Cap Screw by Cummins is a critical component in the maintenance and assembly of commercial trucks and engines. Its design, featuring a hexagonal head and flange, allows for efficient and secure fastening, contributing to the structural integrity and operational efficiency of the vehicle. Regular maintenance and proper installation techniques are essential to ensure the longevity and reliability of this part, making it a valuable asset in the commercial truck industry.