3903269
Hexagon Flange Nut
Cummins®

The Hexagon Flange Nut, specifically Part #3903269 by Cummins, is a vital component in the realm of commercial trucks. Cummins, a renowned manufacturer in the industry, produces this nut, which is integral to the secure assembly and maintenance of various truck components. Understanding its role and functionality is key to ensuring the reliability and efficiency of commercial vehicles.

Basic Concepts of Hexagon Flange Nuts

A Hexagon Flange Nut is a type of fastener characterized by its hexagonal shape and a flanged base. The hexagonal shape allows for easy tightening and loosening using standard tools, while the flange provides additional surface area to distribute the load and prevent the nut from rotating during use. In fastening applications, these nuts are used to secure bolts and other threaded components, ensuring stability and integrity in the assembly ¹.

Purpose of the 3903269 Hexagon Flange Nut in Truck Operations

This Cummins part plays a significant role in the assembly and maintenance of commercial trucks. It is commonly used in various truck components, including engine mounts, chassis parts, and other critical assemblies where secure fastening is required. Its design ensures that components remain firmly in place, even under the demanding conditions encountered in truck operations.

Key Features of the 3903269 Hexagon Flange Nut

The 3903269 is distinguished by several key features. Its hexagonal shape allows for efficient use with standard wrenches and sockets, facilitating easy installation and removal. The flange design provides additional stability and load distribution, reducing the risk of the nut rotating during operation. Manufactured by Cummins, this nut is made from high-quality materials, ensuring durability and resistance to wear and corrosion. Cummins employs precise manufacturing processes to ensure consistency and reliability in every nut produced.

Benefits of Using the 3903269 Hexagon Flange Nut

Utilizing this part offers several advantages. The design enhances fastening security, providing a stable and reliable connection between components. Its resistance to vibration makes it suitable for the dynamic environments typical of commercial trucks. Additionally, the durable construction ensures longevity, reducing the need for frequent replacements and maintenance.

Installation Guidelines

Proper installation of this part is crucial for optimal performance. Begin by ensuring the threaded component is clean and free of debris. Place the nut onto the thread and use a wrench or socket to tighten it to the specified torque. It is important to follow the torque specifications provided by Cummins to avoid over-tightening, which can damage the threads, or under-tightening, which can lead to insecure fastening. Regularly check the nut during initial use to ensure it remains securely in place.

Troubleshooting Common Issues

Common issues with Hexagon Flange Nuts include loosening and corrosion. If a nut appears loose, it should be re-tightened to the specified torque. Corrosion can be addressed by cleaning the nut and the threaded component with a suitable cleaner, followed by reapplication of a thread-locking compound if necessary. Regular inspections can help identify and resolve these issues before they lead to more significant problems.

Maintenance Tips

Maintaining the 3903269 involves regular inspection and cleaning. Inspect the nut periodically for signs of wear, corrosion, or loosening. Clean the nut and the threaded component as needed to remove dirt and debris. If significant wear or damage is observed, consider replacing the nut to prevent potential failures. Following these maintenance practices will help ensure the continued reliability of the fastening system.

Cummins: A Brief Overview

Cummins Inc. is a leading manufacturer in the commercial truck industry, known for its commitment to quality and innovation. Founded in 1919, Cummins has a long history of producing reliable and high-performance engine and power generation equipment. The company’s product range includes engines, filtration systems, and aftermarket parts, all designed to meet the rigorous demands of commercial applications. Cummins’ reputation for excellence is built on its dedication to engineering excellence and customer satisfaction ².

Hexagon Flange Nut 3903269 Compatibility with Cummins Engines

The Cummins Hexagon Flange Nut part number 3903269 is a versatile component designed to fit a variety of Cummins engines. This part is essential for securing flanges and ensuring a tight seal, which is crucial for the proper functioning of the engine’s systems. Below is a detailed description of the engines with which this part is compatible.

Small Bore Engines

• 4B3.9
• 6B5.9
• B4.5
• B5.9 G
• G5.9
• QSB3.9 30 CM550
• QSB5.9 30 CM550
• QSB5.9 44 CM550

These engines, primarily used in smaller applications such as generators, pumps, and agricultural equipment, benefit from the precision and reliability of the 3903269.

Medium Bore Engines

• 6C8.3
• 6C8.3 G
• QSC8.3 CM554
• QSC8.3 CM850 (CM2850)

Medium bore engines, often found in construction equipment, marine applications, and industrial machinery, also utilize the 3903269. This part ensures that the flanges are securely fastened, maintaining the integrity of the engine’s systems.

Large Bore Engines

• C GAS PLUS CM556
• QSC9 CM2250 / QSL9 CM2250
• QSL8.9 CM2150 L141
• QSL9 CM2250
• QSL9 CM2350 L102
• QSL9 CM554
• QSL9 CM850 (CM2850)

Large bore engines, typically used in heavy-duty trucks, buses, and large industrial applications, also rely on the 3903269. This part is critical in ensuring that the flanges are properly secured, which is essential for the performance and longevity of these engines.

Industrial and Marine Engines

• ISB CM550
• ISBE CM800
• ISC CM554
• ISL CM554
• ISL9 CM2150 SN
• ISL9.5 CM2880 L138

These engines, often used in industrial and marine applications, also benefit from the use of the 3903269. This part ensures that the flanges are tightly sealed, which is crucial for the operation of these engines in demanding environments.

By ensuring a secure fit, the 3903269 plays a crucial role in the maintenance and performance of these Cummins engines across various applications.

Role of Part 3903269 Hexagon Flange Nut in Engine Systems

This part is integral to the secure assembly and operation of various engine components. Its primary function is to provide a robust fastening solution that ensures components remain firmly in place under operational stress.

In the air compressor system, the Hexagon Flange Nut is used to attach the compressor to its mounting brackets. This secure attachment is vital for maintaining the alignment and stability of the compressor, ensuring efficient air compression and delivery.

Within the air compressor kit, the nut is employed to fasten various sub-components, such as the air compressor top-level assembly. This ensures that all parts of the assembly are held together securely, preventing misalignment that could lead to inefficiencies or failures.

For the compressor, air, and drive, front gear train accessory, the Hexagon Flange Nut plays a significant role in connecting these components to the engine. This secure connection is essential for the smooth transfer of power and the precise operation of the accessory drive system.

In the context of an engine installation, the nut is used to mount various accessories and components to the engine block or frame. This includes securing the manifold to the engine, ensuring a tight seal that prevents leaks and maintains optimal performance.

The lubricating oil access points often utilize the Hexagon Flange Nut to ensure that oil caps and fittings are securely fastened. This is important for maintaining the integrity of the lubrication system, which is vital for the longevity and performance of the engine.

For the mounting, front gear train accessory, the nut ensures that the accessory is firmly attached to the engine, allowing for stable and reliable operation.

In pump, vacuum applications, the Hexagon Flange Nut is used to secure vacuum pump components, ensuring that they remain in place and function correctly under vacuum conditions.

Overall, the part 3903269 is a fundamental component in the assembly and secure operation of various engine systems, contributing to the reliability and efficiency of the entire engine setup.

Conclusion

The 3903269 Hexagon Flange Nut by Cummins is a critical component in the maintenance and operation of commercial trucks and various engine systems. Its design and features ensure secure fastening, durability, and resistance to wear and corrosion. Proper installation, regular maintenance, and troubleshooting common issues are essential for maximizing the performance and longevity of this part in demanding applications.