3048906
Hexagon Head Cap Screw
Cummins®

Introduction

The Cummins 3048906 Hexagon Head Cap Screw is a specialized fastener designed for use in commercial trucks. It secures various components within the truck’s structure, ensuring stability and durability. Valued in the trucking industry for its robust design and reliable performance under demanding conditions, this part is essential for maintaining the structural integrity of commercial vehicles ¹.

Basic Concepts of Hexagon Head Cap Screws

A Hexagon Head Cap Screw is characterized by its hexagonal head, which allows for efficient tightening and loosening using a wrench or socket. These screws are commonly used in mechanical assemblies to secure components together. They function by threading into a pre-drilled hole, creating a strong and secure connection that can withstand significant stress and vibration ².

Purpose and Role in Truck Operation

The Cummins 3048906 Hexagon Head Cap Screw secures critical components, such as engine mounts, chassis parts, and other structural elements. Its design ensures that these components remain firmly in place, contributing to the overall structural integrity of the truck. This is particularly important in heavy-duty applications where vibrations and loads are substantial ³.

Key Features

This Cummins part features a high-strength material composition, typically alloy steel, which provides excellent durability and resistance to wear. It has a coarse thread type that allows for quick and secure fastening. The hexagonal head design facilitates easy installation and removal using standard tools, ensuring convenience during maintenance procedures.

Benefits

This screw offers several benefits, including enhanced durability due to its material and design. It resists loosening under vibration, which is common in truck operations, ensuring long-term reliability. Additionally, its ease of installation and removal simplifies maintenance tasks, reducing downtime for commercial trucks.

Installation Considerations

Proper installation of the Cummins 3048906 Hexagon Head Cap Screw involves adhering to specific torque specifications to ensure secure fastening without over-tightening, which could damage the screw or the component it is securing. Best practices include using the correct wrench or socket size and ensuring the screw is aligned properly with the hole to prevent cross-threading.

Maintenance and Troubleshooting

Regular maintenance of the Cummins 3048906 Hexagon Head Cap Screw involves inspecting it for signs of wear or damage, such as corrosion or thread damage. Troubleshooting common issues, such as loosening or corrosion, may involve re-tightening the screw to the specified torque or applying a corrosion-resistant coating to prevent further degradation.

Manufacturer Information - Cummins

Cummins Inc. is a leading manufacturer in the commercial truck industry, known for its commitment to quality and innovation. With a broad product range that includes engines, filtration systems, and aftermarket parts, Cummins has established a reputation for reliability and performance. The company’s history of excellence underscores its dedication to providing solutions that meet the demanding needs of the trucking industry.

Applications in Cummins Engines

K19 and K50 Engines

The K19 and K50 engines utilize the Hexagon Head Cap Screw in various applications. This screw is often employed in securing engine components, ensuring that parts remain tightly fastened under the high stress and vibration conditions typical of engine operation. The precision engineering of the screw is crucial for maintaining the alignment and stability of engine parts, contributing to the overall performance and longevity of the engines.

NH/NT 855 Engines

In the NH/NT 855 engines, the Hexagon Head Cap Screw is used in similar applications. These engines, designed for heavy-duty applications, require components that can withstand significant mechanical stress. The screw’s role in these engines is to provide a reliable fastening solution that ensures the integrity of the engine’s structure, particularly in areas where high torque and pressure are common.

QST30 CM552 Engines

The QST30 CM552 engines also benefit from the use of the Hexagon Head Cap Screw. This engine model, known for its versatility and efficiency, incorporates the screw in its assembly to secure various components. The screw’s design allows for easy installation and removal, which is essential during maintenance and repair processes. Its use in these engines helps maintain the precision and alignment necessary for optimal engine performance.

V28 Engines

The V28 engines, another model in the Cummins lineup, utilize the Hexagon Head Cap Screw in their construction. This engine, designed for a range of applications, relies on the screw to ensure that engine parts are securely fastened. The screw’s role in these engines is to provide a dependable fastening solution that supports the engine’s structural integrity and operational efficiency.

Role of Part 3048906 Hexagon Head Cap Screw in Engine Systems

The Cummins 3048906 Hexagon Head Cap Screw is instrumental in securing and maintaining the integrity of various engine components. Its application spans across multiple systems, ensuring that each part functions as intended under operational conditions.

Fan and Pulley System

In the fan and pulley mounting system, the Hexagon Head Cap Screw plays a significant role in attaching the fan hub to the pulley. This secure attachment is essential for the efficient transfer of rotational force from the engine to the fan, ensuring optimal airflow for engine cooling.

Exhaust System

Within the exhaust mounting, this screw is used to fasten the exhaust manifold to the engine block. This secure connection is vital for maintaining the structural integrity of the exhaust system, preventing leaks, and ensuring that exhaust gases are directed away from the engine compartment efficiently.

Fan Drive Arrangement

The fan drive arrangement relies on the Hexagon Head Cap Screw to attach the fan drive to the engine. This connection is crucial for the synchronized operation of the fan with the engine’s rotational speed, contributing to effective engine cooling.

Manifold and Exhaust Mounting

For manifold and exhaust mounting, the screw is employed to secure the manifold to the engine and the exhaust system to the manifold. This ensures a tight seal, preventing exhaust leaks and maintaining the efficiency of the exhaust system.

Radiator and Cooling System

In the radiator and cooling system, the Hexagon Head Cap Screw is used to attach the radiator to its mounting brackets and to secure the radiator cooling system components. This ensures that the radiator remains firmly in place, allowing for efficient heat dissipation from the engine coolant.

Turbocharger

The turbocharger system also benefits from the use of this screw in securing the turbocharger to the engine and exhaust system. This secure attachment is essential for the turbocharger’s operation, ensuring that it can effectively compress the air entering the engine, enhancing performance and efficiency.

Conclusion

The Cummins 3048906 Hexagon Head Cap Screw is a versatile component that plays a significant role in the secure and efficient operation of various engine systems. Its application across different components underscores its importance in maintaining the structural integrity and functional efficiency of the engine.