3863139
Regular Hexagon Nut
Cummins®

The 3863139 Regular Hexagon Nut, manufactured by Cummins, is a specialized fastener designed for use in commercial trucks. Cummins, a renowned name in the diesel engine manufacturing industry, produces this nut to meet the demanding requirements of heavy-duty truck assemblies. Fasteners like the 3863139 play a significant role in ensuring the structural integrity and operational efficiency of commercial trucks ¹.

Basic Concepts of Regular Hexagon Nuts

A regular hexagon nut is a type of fastener characterized by its six-sided shape. The hexagonal geometry allows for efficient torque application using common hand tools, such as wrenches and sockets, which can grip the sides firmly without slipping. This shape is preferred for nuts due to its balance of strength and ease of use. The threading on these nuts is typically cut to precise specifications to ensure a secure fit with corresponding bolts. Materials commonly used in the manufacturing of such nuts include alloy steel, which offers a combination of strength and resistance to wear and corrosion ².

Purpose and Role in Truck Operation

The 3863139 Regular Hexagon Nut serves a vital function in the assembly and maintenance of commercial trucks. It is used to secure various components, ensuring they remain firmly in place under the dynamic and often harsh conditions encountered in trucking operations. By providing a reliable connection between parts, this nut helps maintain the structural integrity of the truck and contributes to its overall operational efficiency. Its role is particularly important in areas subject to significant stress and vibration, where secure fastening is crucial ³.

Key Features

The 3863139 Regular Hexagon Nut is distinguished by several key features that enhance its performance in heavy-duty applications. Its design incorporates precise threading to ensure a secure fit with bolts, minimizing the risk of loosening over time. The material composition, typically high-grade alloy steel, provides the necessary strength and durability to withstand the rigors of commercial trucking. Additionally, the nut may feature unique attributes such as a corrosion-resistant coating, which further enhances its longevity in challenging environments ⁴.

Benefits

Utilizing the 3863139 Regular Hexagon Nut offers several advantages in commercial truck applications. Its design allows for improved torque application, ensuring components are securely fastened. The nut’s resistance to loosening under vibration and dynamic loads contributes to the reliability of truck assemblies. Furthermore, its durability in harsh operating conditions typical of commercial trucking ensures long-term performance and reduces the need for frequent replacements ¹.

Installation and Usage Guidelines

Correct installation of the 3863139 Regular Hexagon Nut is crucial for optimal performance and safety. It is recommended to use the appropriate tools, such as wrenches or sockets that match the nut’s size, to apply the specified torque. Following torque specifications ensures the nut is tightened to the correct level, avoiding over-tightening, which can lead to damage, or under-tightening, which may result in loosening. Proper installation procedures, including cleaning the mating surfaces and inspecting for damage, are essential to ensure the nut functions as intended ².

Troubleshooting and Maintenance

Common issues with regular hexagon nuts include loosening due to vibration or dynamic loads and corrosion in harsh environments. Troubleshooting steps may involve re-tightening the nut to the specified torque or replacing it if damage is detected. Regular maintenance, such as inspecting for signs of wear or corrosion and ensuring proper torque, can help prolong the life of the nut and ensure continued reliable performance. In environments where corrosion is a concern, applying a protective coating or using nuts with inherent corrosion resistance can be beneficial ³.

Cummins: Manufacturer Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established itself as a leader in diesel engine manufacturing, known for its commitment to quality, innovation, and customer satisfaction. The company’s expertise in engine technology and components extends to the production of fasteners like the 3863139 Regular Hexagon Nut, ensuring they meet the high standards required for commercial truck applications ⁴.

Cummins Engine Compatibility with Part 3863139

The Regular Hexagon Nut, part number 3863139, manufactured by Cummins, is a critical component in the assembly and maintenance of several Cummins engine models. This part is integral to the structural integrity and operational efficiency of the engines it fits. Here is a detailed look at the compatibility of this part with various Cummins engines:

4B3.9 and 6B5.9 Engines

The Regular Hexagon Nut 3863139 is compatible with the 4B3.9 and 6B5.9 engines. These engines are known for their robust design and are often used in heavy-duty applications. The nut’s precision and strength ensure reliable fastening in these demanding environments.

6C8.3 and QSC8.3 Engines

This nut also fits the 6C8.3 and QSC8.3 engines. These engines are part of Cummins’ mid-range power offerings, providing a balance of power and efficiency. The Regular Hexagon Nut 3863139 is used in various applications within these engines, ensuring secure connections and maintaining operational integrity.

ISC CM2150 and ISL CM2150 Engines

The ISC CM2150 and ISL CM2150 engines benefit from the use of the Regular Hexagon Nut 3863139. These engines are designed for on-highway applications, and the nut’s durability and precision are essential for their performance and longevity.

QSB4.5 and QSB6.7 Engines

The Regular Hexagon Nut 3863139 is compatible with the QSB4.5 and QSB6.7 engines, which are known for their versatility and power. These engines are used in a wide range of applications, from agricultural to industrial uses. The nut’s fit and function are crucial in maintaining the engines’ structural integrity and performance.

QSB4.5 CM2250 EC and QSB4.5 CM850 (CM2850)

The QSB4.5 CM2250 EC and QSB4.5 CM850 (CM2850) engines also utilize the Regular Hexagon Nut 3863139. These engines are part of Cummins’ lineup of high-performance engines, and the nut’s precision ensures reliable fastening in these high-demand applications.

QSB6.7 CM2250, QSB6.7 CM2350 B105, QSB6.7 CM850 (CM2850), and QSB6.7 CM2350 B105

The QSB6.7 CM2250, QSB6.7 CM2350 B105, QSB6.7 CM850 (CM2850), and QSB6.7 CM2350 B105 engines are also compatible with the Regular Hexagon Nut 3863139. These engines are known for their power and efficiency, and the nut’s precision is essential for maintaining their performance and reliability.

QSB7 CM2880 B117 and QSC9 CM2250/QSL9 CM2250

The Regular Hexagon Nut 3863139 fits the QSB7 CM2880 B117 and QSC9 CM2250/QSL9 CM2250 engines. These engines are part of Cummins’ high-performance lineup, and the nut’s durability and precision are critical for their operation in demanding environments.

QSL9 CM554 and QSL9 CM850 (CM2850)

The QSL9 CM554 and QSL9 CM850 (CM2850) engines also use the Regular Hexagon Nut 3863139. These engines are designed for heavy-duty applications, and the nut’s fit and function are essential for maintaining their structural integrity and performance.

By ensuring a precise fit and reliable fastening, the Regular Hexagon Nut 3863139 plays a crucial role in the operation and longevity of these Cummins engines.

Understanding the Role of Part 3863139 Regular Hexagon Nut in Engine Systems

Part 3863139, a Regular Hexagon Nut, is integral to the secure assembly and operation of various engine components. Its application spans across multiple systems, ensuring the stability and efficiency of the engine.

Alternator Mounting

In alternator mounting, the Regular Hexagon Nut is used to fasten the alternator to the engine block or bracket. This secure attachment is essential for the alternator to function correctly, generating electricity to power the vehicle’s electrical systems and recharge the battery.

Arrangement and Mounting

The Regular Hexagon Nut plays a significant role in the arrangement and mounting of various engine components. It is used to secure brackets, mounts, and other structural elements that hold components in place. This ensures that all parts are correctly aligned and supported, which is vital for the engine’s balance and performance.

Oil Fill and Oil Filler Tube

In the oil fill system, the Regular Hexagon Nut is employed to secure the oil filler tube to the engine block. This connection is crucial for maintaining the integrity of the oil fill system, ensuring that oil can be added to the engine without leaks. Proper sealing is essential for maintaining the correct oil level, which is necessary for engine lubrication and cooling.

Compressor and Refrigerant System

For engines equipped with air conditioning systems, the Regular Hexagon Nut is used in the mounting of the compressor. This component is responsible for pressurizing the refrigerant, which is then used to cool the air inside the vehicle. Secure mounting of the compressor ensures efficient operation of the refrigerant system.

Drive and Fan Systems

In drive systems, particularly those involving auxiliary components like the water pump or power steering pump, the Regular Hexagon Nut is used to secure drive belts to pulleys. This ensures that power is efficiently transferred from the engine to these components. Similarly, in fan systems, the nut is used to attach the fan to the engine, ensuring proper airflow for cooling.

Idler Pulley

The Regular Hexagon Nut is also utilized in the attachment of idler pulleys. These pulleys help maintain tension in the drive belts, ensuring they run smoothly and do not slip. Proper tension is essential for the reliable operation of all belt-driven components.

In summary, Part 3863139 Regular Hexagon Nut is a versatile component that ensures the secure and efficient operation of various engine systems. Its role in mounting, arrangement, and securing critical components underscores its importance in maintaining engine performance and reliability.

Conclusion

The 3863139 Regular Hexagon Nut is a critical component in the assembly and maintenance of commercial trucks and Cummins engines. Its design, featuring precise threading and high-grade alloy steel, ensures reliable fastening and durability in demanding environments. Proper installation and maintenance are essential to maximize its performance and longevity. Cummins’ commitment to quality and innovation is reflected in the production of this part, ensuring it meets the high standards required for commercial truck applications.