4903138
Hexagon Flange Nut
Cummins®

The Cummins Hexagon Flange Nut (Part #4903138) is a critical component in commercial truck maintenance, contributing to the structural integrity of various truck components by providing secure fastening solutions. This part ensures that critical components remain securely fastened under demanding conditions, playing a vital role in the maintenance and operation of commercial trucks.

Basic Concepts of Hexagon Flange Nuts

A Hexagon Flange Nut is a type of fastener characterized by its hexagonal shape and a flange—a flat, circular plate—attached to one end. This design allows for easy tightening and loosening using a wrench or socket, while the flange distributes the load and prevents the nut from embedding into softer materials. In the automotive industry, flange nuts are commonly used to secure components that require a high degree of stability and resistance to vibration ¹.

Purpose of the 4903138 Hexagon Flange Nut in Truck Operations

The 4903138 Hexagon Flange Nut is integral to the operation and maintenance of commercial trucks. It is commonly used in applications where secure fastening is required, such as attaching brackets, securing engine components, and fastening chassis parts. Its design ensures that these components remain firmly in place, even under the stress of heavy loads and rough road conditions ².

Key Features of the 4903138 Hexagon Flange Nut

This Cummins part is distinguished by several key features. Its hexagonal shape allows for efficient tightening and loosening, while the flange provides additional surface area to distribute the load and prevent damage to the fastened material. The nut is made from high-quality materials, ensuring durability and resistance to corrosion. It may also feature special coatings or treatments to enhance its performance in harsh operating conditions.

Benefits of Using the 4903138 Hexagon Flange Nut

Using the 4903138 Hexagon Flange Nut offers several advantages. Its design provides improved fastening security, making it less likely to loosen over time due to vibration. The flange helps distribute the load more evenly, reducing the risk of damage to the fastened material. Additionally, the nut’s durable construction ensures long-lasting performance in demanding environments ³.

Installation and Usage Guidelines

Proper installation of the 4903138 Hexagon Flange Nut is crucial for ensuring its effectiveness. It should be installed using the appropriate wrench or socket, with torque specifications provided by the manufacturer to be followed closely. Special considerations may be necessary for different applications, such as ensuring the flange is properly aligned and that the fastened material is not damaged during installation.

Troubleshooting Common Issues

Common problems associated with Hexagon Flange Nuts include stripping, corrosion, and loosening. Stripping can occur if the wrong tool is used or if excessive force is applied during installation. Corrosion may be a concern in environments where the nut is exposed to moisture or chemicals. Loosening can happen due to vibration or insufficient torque. Troubleshooting methods include using the correct tools and techniques for installation, applying protective coatings to prevent corrosion, and regularly checking and re-torquing the nut to ensure it remains secure.

Maintenance Tips

Regular maintenance of Hexagon Flange Nuts is important for ensuring longevity and reliable performance. This includes periodic inspection for signs of wear, corrosion, or damage. Re-torque intervals should be followed to ensure the nut remains securely fastened. If any issues are detected, the nut should be addressed promptly to prevent further complications.

Cummins: A Brief Overview

Cummins Inc. is a leading manufacturer in the commercial vehicle industry, known for its history of innovation and commitment to quality. The company offers a wide range of products, including engines, filtration systems, and aftermarket parts. Cummins’ reputation for reliability and performance makes its components, like the 4903138 Hexagon Flange Nut, a preferred choice for commercial truck maintenance and operation.

Hexagon Flange Nut 4903138 Compatibility with Cummins Engines

The Hexagon Flange Nut part number 4903138, manufactured by Cummins, is a critical component that fits several of their engine models. This part is essential for the assembly and maintenance of these engines, ensuring proper connection and secure fastening of various components.

Compatible Engines

1. ISX12 CM2350 X102
2. ISX12/ISX11.9 CM2250
3. ISX15 CM2250
4. ISZ13 CM2150 Z105
5. QSK19 CM2350 K144G
6. QSX11.9 CM2250 ECF
7. QSX15 CM2250 ECF
8. QSZ13 CM2150 Z101
9. QSZ13 CM2150 Z102
10. X15 CM2350 X116B
11. X15 CM2350 X123B
12. X15 CM2450 X134B

Grouping by Engine Series

• ISX Series

  • ISX12 CM2350 X102
  • ISX12/ISX11.9 CM2250
  • ISX15 CM2250

• ISZ Series

  • ISZ13 CM2150 Z105

• QSK Series

  • QSK19 CM2350 K144G

• QSX Series

  • QSX11.9 CM2250 ECF
  • QSX15 CM2250 ECF

• QSZ Series

  • QSZ13 CM2150 Z101
  • QSZ13 CM2150 Z102

• X15 Series

  • X15 CM2350 X116B
  • X15 CM2350 X123B
  • X15 CM2450 X134B

Each of these engines relies on the Hexagon Flange Nut 4903138 for various applications, ensuring that the components are securely fastened and the engine operates efficiently. This part is integral to the maintenance and longevity of these engines, providing a reliable connection point in numerous engine configurations.

Role of Part 4903138 Hexagon Flange Nut in Engine Systems

The part 4903138 Hexagon Flange Nut is instrumental in securing various components within the engine systems, ensuring stability and integrity throughout operation. In the Fuel Pump assembly, this nut is employed to fasten the pump housing to the engine block, providing a secure mounting point that withstands the vibrations and pressures generated during fuel delivery.

Within the Fuel Systems HD XPI, the Hexagon Flange Nut is utilized to attach critical fuel lines and connectors. Its design ensures a tight seal, preventing fuel leaks and maintaining the system’s efficiency. This is particularly important in high-pressure environments where even minor leaks can lead to significant performance issues.

For the XPI JV Components, the nut plays a role in assembling and securing the various modules and sensors. It ensures that these components remain firmly in place, allowing for accurate readings and reliable operation. The stability provided by the nut is essential for the precise functioning of the XPI JV System.

In the XPI JV System Cummins HD, the Hexagon Flange Nut is used to secure the high-pressure fuel lines and injectors. This application is vital for maintaining the system’s high-pressure integrity, which is necessary for optimal fuel atomization and combustion efficiency.

Similarly, in the XPI JV System Scania HD, the nut is employed to fasten the fuel rail and injectors. Its robust design ensures that these components can withstand the extreme conditions of high-pressure fuel delivery, contributing to the system’s overall reliability and performance.

Conclusion

The 4903138 Hexagon Flange Nut is a vital component in the maintenance and operation of commercial trucks and Cummins engines. Its design and features ensure secure fastening, stability, and durability under demanding conditions. Proper installation, regular maintenance, and addressing common issues promptly are essential for maximizing the performance and longevity of this part.