3903293
Regular Hexagon Jam Nut
Cummins®

The 3903293 Regular Hexagon Jam Nut is a specialized fastener produced by Cummins, a renowned manufacturer in the commercial truck industry. This component is designed for use in various fastening applications within commercial trucks, ensuring secure and reliable connections of components and assemblies.

Basic Concepts of Regular Hexagon Jam Nuts

A Regular Hexagon Jam Nut is a type of fastener characterized by its hexagonal shape, which allows for efficient tightening and loosening using standard tools. Its design includes a chamfered edge that, when tightened against another nut or a threaded component, creates a jamming effect. This effect enhances the security of the fastened components by preventing loosening due to vibration or other dynamic forces ¹.

Purpose of the 3903293 Regular Hexagon Jam Nut in Truck Operations

In the context of commercial truck operations, the 3903293 Regular Hexagon Jam Nut plays a role in securing various components and assemblies. It is commonly used in applications where vibration resistance and secure fastening are required, such as in the attachment of brackets, plates, and other structural elements. By providing a reliable fastening solution, it contributes to the overall safety and efficiency of truck operations ².

Key Features of the 3903293 Regular Hexagon Jam Nut

The 3903293 Regular Hexagon Jam Nut features a hexagonal shape that facilitates easy manipulation with standard wrenches. It is constructed from high-quality materials, ensuring durability and resistance to corrosion. The nut’s thread specifications are designed to match specific applications, providing a secure fit and reliable performance. Additionally, its chamfered edge enhances the jamming effect, further securing the fastened components ³.

Benefits of Using the 3903293 Regular Hexagon Jam Nut

The 3903293 Regular Hexagon Jam Nut offers several advantages. Its design ensures reliable and durable fastening, reducing the risk of component loosening during operation. The ease of installation, facilitated by its hexagonal shape, allows for quick and efficient assembly. Furthermore, its resistance to corrosion enhances its longevity, making it a cost-effective solution for commercial truck maintenance ⁴.

Installation Procedures for the 3903293 Regular Hexagon Jam Nut

To install the 3903293 Regular Hexagon Jam Nut, begin by ensuring the threaded component is clean and free of debris. Place the jam nut onto the thread, ensuring it is aligned correctly. Use a wrench to tighten the nut securely against the component or another nut. It is important to follow the specified torque settings to avoid over-tightening, which could damage the threads or the component itself. Regular checks should be performed to ensure the nut remains secure ⁵.

Troubleshooting Common Issues with the 3903293 Regular Hexagon Jam Nut

Common issues with the 3903293 Regular Hexagon Jam Nut may include loosening due to vibration or corrosion. To address loosening, re-tighten the nut to the specified torque settings. If corrosion is present, clean the affected area thoroughly before re-installing the nut. In cases where the threads are damaged, it may be necessary to replace the nut or the threaded component to ensure a secure fit ⁶.

Maintenance Tips for the 3903293 Regular Hexagon Jam Nut

To maintain the 3903293 Regular Hexagon Jam Nut and ensure optimal performance, regular inspections are recommended. Check for signs of loosening, corrosion, or damage. Lubricating the threads with a compatible lubricant can help prevent corrosion and facilitate easier tightening in the future. Additionally, ensuring the nut is tightened to the correct torque specifications during installation will contribute to its longevity and reliability ⁷.

Cummins: Manufacturer Overview

Cummins is a leading manufacturer in the commercial truck industry, known for its commitment to quality and innovation. With a rich history of producing reliable and high-performance components, Cummins has established a strong reputation for excellence. The company’s dedication to research and development ensures that its products, including the 3903293 Regular Hexagon Jam Nut, meet the demanding requirements of commercial truck applications ⁸.

Cummins Engine Compatibility with Regular Hexagon Jam Nut (Part 3903293)

The Regular Hexagon Jam Nut, identified by the part number 3903293, is a critical component used in various Cummins engines. This part is designed to secure and stabilize threaded fasteners, ensuring that they remain tightly fastened under operational stresses.

Cummins 4B3.9 and 6B5.9 Engines

The 4B3.9 and 6B5.9 engines are part of Cummins’ lineup of medium-duty diesel engines. These engines are known for their durability and efficiency, often used in various commercial applications. The Regular Hexagon Jam Nut is compatible with these engines, providing a reliable method to secure bolts and screws, which is essential for maintaining engine integrity ⁹.

Cummins 6C8.3 and B4.5 Engines

The 6C8.3 and B4.5 engines are also medium-duty diesel engines from Cummins. These engines are designed for applications that require robust performance and reliability. The Regular Hexagon Jam Nut fits seamlessly into these engines, ensuring that all threaded connections are secure and stable ¹⁰.

Cummins L8.9 and L8.9 L121 Engines

The L8.9 and L8.9 L121 engines are high-performance diesel engines used in heavy-duty applications. These engines are known for their power and efficiency. The Regular Hexagon Jam Nut is an essential component in these engines, providing the necessary security for threaded fasteners ¹¹.

Cummins L9.3 L105 and L9.5 L117 Engines

The L9.3 L105 and L9.5 L117 engines are part of Cummins’ range of medium-duty diesel engines. These engines are designed for applications that require a balance of power and efficiency. The Regular Hexagon Jam Nut is compatible with these engines, ensuring that all threaded connections are secure and stable ¹².

Cummins QSB3.9 30 CM550 and QSB5.9 30 CM550 Engines

The QSB3.9 30 CM550 and QSB5.9 30 CM550 engines are part of Cummins’ QSB series, known for their versatility and performance. These engines are used in a variety of applications, from agricultural to industrial. The Regular Hexagon Jam Nut is a critical component in these engines, providing the necessary security for threaded fasteners to ensure reliable operation ¹³.

Role of Part 3903293 Regular Hexagon Jam Nut in Engine Systems

The Part 3903293 Regular Hexagon Jam Nut is integral to the secure assembly and maintenance of various components within engine systems. Its primary function is to ensure that connections remain tight and leak-free, which is essential for the efficient operation of the engine.

Fuel System Integration

In the fuel system, the Regular Hexagon Jam Nut is often used to connect the fuel filter to the fuel lines. This connection is vital for maintaining the integrity of the fuel delivery system. By securing the fuel filter housing, it prevents fuel leaks and ensures that the filtration process is effective, which is important for clean fuel delivery to the engine ¹⁴.

Fuel Pump Conversion Kits

When installing fuel pump conversion kits, the Regular Hexagon Jam Nut plays a significant role in attaching the new fuel pump to the fuel lines. This ensures a secure fit that can withstand the pressure variations within the fuel system. Proper sealing at this junction is necessary to maintain consistent fuel pressure, which is essential for optimal engine performance ¹⁵.

Plumbing and Fuel Lines

In the context of engine plumbing, the Regular Hexagon Jam Nut is used to connect various fuel lines. Whether it’s connecting the fuel lines to the fuel tank, the fuel pump, or the injectors, this nut ensures that all connections are tight and secure. This is particularly important in high-pressure fuel systems where any leak can lead to performance issues or safety hazards ¹⁶.

Filter Housings

For filter housings, especially in applications where the filter is subject to vibration or movement, the Regular Hexagon Jam Nut provides the necessary clamping force to keep the filter securely in place. This is important for maintaining the efficiency of the filtration process and preventing contaminants from entering the fuel system ¹⁷.

Location-Specific Applications

In specific locations within the engine bay, such as near the fuel filter location, the Regular Hexagon Jam Nut ensures that all connections are robust and reliable. This is particularly important in areas exposed to engine heat or mechanical stress, where standard nuts might fail over time ¹⁸.

Conclusion

Overall, the Part 3903293 Regular Hexagon Jam Nut is a fundamental component in ensuring the reliability and efficiency of engine systems by providing secure and leak-proof connections across various critical points. Its role in securing components and assemblies within commercial trucks and engines is indispensable, contributing to the overall safety and performance of these vehicles.