3967128
Regular Hexagon Nut
Cummins®

The 3967128 Regular Hex Nut is a component manufactured by Cummins, a well-established name in the automotive and heavy-duty truck industry. This hex nut serves a specific purpose within the complex systems of heavy-duty trucks, contributing to the secure fastening of various components. Understanding its role and significance is key to maintaining the integrity and performance of truck mechanics.

Basic Concepts of Regular Hex Nuts

A regular hex nut is a type of fastener characterized by its hexagonal shape, which allows for efficient tightening and loosening using a wrench. In mechanical applications, hex nuts are used to secure bolts and other threaded components, ensuring that parts remain firmly in place under various operational conditions ¹.

Purpose of the 3967128 Regular Hex Nut in Truck Operations

The 3967128 Regular Hex Nut plays a role in the operation and maintenance of heavy-duty trucks by providing a secure fastening solution for components that are subject to significant stress and vibration. Secure fastening is important in truck mechanics to ensure the reliability and safety of the vehicle, especially under demanding conditions ².

Key Features of the 3967128 Regular Hex Nut

The 3967128 Regular Hex Nut is designed with specific characteristics that make it suitable for heavy-duty applications. Its construction materials and design contribute to its durability and strength, ensuring it can withstand the rigors of truck operations. Additionally, its compatibility with other components is a key feature that enhances its functionality in various truck systems.

Benefits of Using the 3967128 Regular Hex Nut

Utilizing the 3967128 Regular Hex Nut offers several advantages. It provides enhanced security for fasteners, resists vibration which can lead to loosening over time, and offers long-term reliability. These benefits contribute to the overall performance and safety of heavy-duty trucks.

Installation and Usage Guidelines

Proper installation of the 3967128 Regular Hex Nut involves following specific torque specifications to ensure a secure fit. Best practices include using the correct tools and techniques to avoid over-tightening or under-tightening, which can affect the nut’s performance and the integrity of the fastened components ³.

Troubleshooting Common Issues

Common issues with hex nuts, such as loosening or corrosion, can be addressed through regular inspection and maintenance. Solutions may include re-tightening the nut to the specified torque or applying a corrosion-resistant coating to extend its lifespan.

Maintenance Tips for Longevity

To ensure the continued performance of the 3967128 Regular Hex Nut, regular inspection and maintenance are recommended. This includes checking for signs of wear or damage, ensuring proper torque is maintained, and addressing any issues promptly to prevent failure.

Cummins: A Brief Overview

Cummins Inc. is a leading manufacturer in the automotive and heavy-duty truck industry, known for its wide range of products and strong reputation for quality and reliability. The company’s history and commitment to innovation have established it as a trusted provider of components for heavy-duty applications.

Cummins Engine Part 3967128: Regular Hex Nut Compatibility

The Regular Hex Nut part number 3967128, manufactured by Cummins, is a critical component in various engine assemblies. This part is designed to fit seamlessly within the engine systems of several Cummins engines, ensuring secure fastening and reliable performance. Below is a detailed overview of the engines with which this part is compatible:

Compatible Engines

• 6B5.9
• 6C8.3
• B5.9 GAS PLUS CM556
• B6.7 CM2670 B153B
• C GAS PLUS CM556
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISBE CM2150
• ISBE4 CM850
• ISL9 CM2150 SN
• ISL9.5 CM2880 L138
• L8.9
• L8.9G CMOH2.0 L125B

Grouping of Compatible Engines

6 Series Engines

• 6B5.9
• 6C8.3

B Series Engines

• B5.9 GAS PLUS CM556
• B6.7 CM2670 B153B
• C GAS PLUS CM556

ISB/ISD Series Engines

• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN

ISBE Series Engines

• ISBE CM2150
• ISBE4 CM850

ISL Series Engines

• ISL9 CM2150 SN
• ISL9.5 CM2880 L138

L Series Engines

• L8.9
• L8.9G CMOH2.0 L125B

The Regular Hex Nut part number 3967128 is integral to the assembly and maintenance of these engines, ensuring that all components are securely fastened and operating as intended. Its compatibility across a wide range of Cummins engines underscores its versatility and importance in maintaining engine integrity.

Role of Part 3967128 Regular Hex Nut in Various Engine Systems

The Part 3967128 Regular Hex Nut is a versatile fastener utilized across multiple components within engine systems to ensure secure and reliable connections. Its application spans various critical areas, contributing to the overall functionality and safety of the engine.

Accessory Support

In the accessory support system, the Regular Hex Nut is employed to fasten brackets and mounts that hold accessories such as alternators, power steering pumps, and air conditioning compressors. This ensures that these components remain firmly in place, reducing the risk of vibration-induced damage and ensuring consistent performance.

Clutch and Rear Connections

For the clutch system, the Regular Hex Nut is used in the rear connection points to secure the clutch housing to the engine block or transmission. This connection is vital for transmitting power efficiently from the engine to the transmission, ensuring smooth operation of the vehicle.

Water Inlet and Outlet Connections

In the cooling system, the Regular Hex Nut plays a significant role in securing the water inlet and outlet connections to the engine block and radiator. These connections are essential for maintaining the flow of coolant, which is critical for regulating engine temperature and preventing overheating.

Air Cleaner and Radiator Mounting

The Regular Hex Nut is also utilized in mounting the air cleaner to the engine compartment and securing the radiator to its frame. Proper mounting of the air cleaner ensures efficient airflow to the engine, while secure radiator mounting maintains the structural integrity of the cooling system.

Radiator Plumbing and Tube Bracing

In radiator plumbing, the Regular Hex Nut is used to connect various tubes and hoses, ensuring a leak-free system that maintains the integrity of the coolant flow. Additionally, in tube bracing applications, it reinforces the structural stability of the engine monitoring system, providing a robust framework for sensors and monitoring equipment.

Rail and Base System

Finally, the Regular Hex Nut is integral in the rail and base system, where it secures various components to the engine’s structural framework. This ensures that all parts remain aligned and function correctly, contributing to the engine’s overall reliability and performance.

Conclusion

The 3967128 Regular Hex Nut is a critical component in the maintenance and operation of heavy-duty trucks and Cummins engines. Its role in securing various components ensures the reliability, safety, and performance of these machines. Proper installation, maintenance, and understanding of its applications are essential for maximizing the benefits of this Cummins part.