3901395
Hexagon Head Cap Screw
Cummins®

Introduction

The Cummins 3901395 Hexagon Head Cap Screw is a specialized fastener designed for use in commercial trucks. Manufactured by Cummins Inc., a leader in diesel engine technology, this screw is engineered to meet the demanding requirements of heavy-duty applications. Its design and material composition ensure reliable performance in the harsh environments typical of commercial trucking ¹.

Basic Concepts of Hexagon Head Cap Screws

A Hexagon Head Cap Screw is a type of fastener characterized by its hexagonal head, which allows for efficient tightening and loosening using standard tools such as wrenches or sockets. These screws are widely used in mechanical assemblies to secure components together. Their design provides a balance of strength and ease of use, making them suitable for a variety of applications where secure fastening is required ².

Role in Truck Operation

The 3901395 Hexagon Head Cap Screw plays a significant role in the operation and maintenance of commercial trucks. It is utilized in various truck systems, including engine components, chassis assemblies, and other critical areas where secure fastening is necessary. By providing a reliable connection between parts, this screw helps ensure the structural integrity and performance of the truck ³.

Key Features

The Cummins 3901395 Hexagon Head Cap Screw features a hexagonal head design, which facilitates easy and precise tightening with common tools. It is made from high-quality materials that offer excellent resistance to corrosion and wear, ensuring durability in demanding conditions. Additionally, the screw’s design includes features that enhance its performance, such as a smooth shank for easy insertion and a robust thread profile for secure fastening.

Benefits

Using the 3901395 Hexagon Head Cap Screw offers several benefits. Its design provides improved fastening security, reducing the risk of loosening over time. The screw’s resistance to corrosion ensures long-lasting performance, even in challenging environments. Furthermore, its compatibility with standard tools simplifies installation and maintenance, making it a practical choice for commercial truck applications.

Troubleshooting and Maintenance

Common issues with Hexagon Head Cap Screws, such as corrosion or stripping, can be mitigated through proper maintenance practices. Regular inspection and replacement of screws showing signs of wear or damage are recommended to ensure continued reliability. Additionally, using the correct tools and techniques during installation can help prevent damage to the screw and the components it secures.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes diesel and natural gas engines, as well as related technologies. With a history spanning over a century, Cummins is renowned for its expertise in engine technology and its commitment to quality and innovation. The company’s products are designed to meet the rigorous demands of commercial vehicle applications, ensuring reliable performance and durability.

Cummins Engine Compatibility with Hexagon Head Cap Screw 3901395

The Cummins Hexagon Head Cap Screw part number 3901395 is a versatile component designed to fit various Cummins engines. This screw is essential in securing different parts within the engine assembly, ensuring stability and reliability. Below is a detailed description of how this part fits with the listed Cummins engines.

4B3.9, 6B5.9, 6C8.3, B3.9 G, B4.5, B4.5 RGT, B5.6 CM2670 B152B, B5.9 CM2670 B166C, B5.9 G, B5.9 GAS PLUS CM556, B6.7 CM2350 B135B, C8.3 G, D4.0 CM2620 D103B, G5.9, G5.9 CM558, G8.3, G8.3 CM558, GTA8.3 CM558

These engines, which include both the 4B and 6B series as well as the G series, utilize the 3901395 Hexagon Head Cap Screw in various applications. This screw is commonly used for securing engine covers, brackets, and other structural components that require a robust fastening solution. Its design ensures a tight and secure fit, which is crucial for maintaining engine integrity under high stress conditions.

ISB CM2150, ISB CM550, ISB CM850, ISB/ISD4.5 CM2150 B119, ISB/ISD6.7 CM2150 SN, ISB3.9 CM2220 B107

The ISB series engines, including the CM2150, CM550, and CM850 variants, also benefit from the use of the 3901395 Hexagon Head Cap Screw. These engines are known for their durability and efficiency, and the screw plays a key role in maintaining their structural integrity. The ISB/ISD models, such as the CM2150 B119 and CM2150 SN, use this screw in similar applications, ensuring that all components are securely fastened and aligned.

C GAS PLUS CM556

The C GAS PLUS CM556 engine incorporates the 3901395 Hexagon Head Cap Screw in its assembly. This engine is designed for natural gas applications, and the screw’s reliability is essential for the secure attachment of components that are exposed to the unique stresses of gas-powered engines.

The 3901395 Hexagon Head Cap Screw is a critical component in the Cummins engine ecosystem, providing the necessary strength and stability for a wide range of engine models. Its compatibility with various engine series underscores its versatility and importance in maintaining engine performance and longevity.

Role of Part 3901395 Hexagon Head Cap Screw in Engine Systems

The part 3901395 Hexagon Head Cap Screw is integral to several key components within engine systems, ensuring secure assembly and reliable operation.

In engine mounting, this screw is utilized to fasten the engine securely to the vehicle’s frame, providing stability and reducing vibrations during operation. Its hexagonal head allows for efficient torque application, ensuring a tight and consistent fit.

For the flexplate and flywheel, the screw plays a significant role in attaching these components to the crankshaft. This secure attachment is essential for transmitting power from the engine to the transmission, ensuring smooth and efficient power delivery.

In flywheel mounting applications, the screw helps in attaching the flywheel to the engine block or transmission housing. This attachment is vital for maintaining the alignment and balance of the flywheel, which is critical for the engine’s rotational stability.

During engine installation, the part 3901395 Hexagon Head Cap Screw is often used in various kits to ensure all components are properly secured. Whether it’s a general engine installation kit or a more specific PDC BM assembly kit, these screws provide the necessary fastening power to keep everything in place.

In the context of an overhaul kit, these screws are used to reassemble engine components after maintenance or repair. They ensure that all parts are correctly aligned and tightly fastened, which is essential for the engine’s performance and longevity.

For front engine support and upfit parts, the screw is employed to secure additional components or modifications to the engine. This can include anything from aftermarket performance parts to necessary upfit components for specialized vehicle applications.

Overall, the part 3901395 Hexagon Head Cap Screw is a versatile fastener that contributes to the integrity and functionality of various engine components, playing a significant role in both the initial assembly and ongoing maintenance of engine systems.

Conclusion

The Cummins 3901395 Hexagon Head Cap Screw is a critical component in the maintenance and operation of commercial trucks and Cummins engines. Its robust design, resistance to corrosion, and ease of use make it an essential fastener for securing various engine components. By ensuring secure assembly and reliable operation, this Cummins part plays a vital role in the performance and longevity of heavy-duty applications.