3043649
Hexagon Flange Head Cap Screw
Cummins®

The Cummins Hexagon Flange Head Cap Screw, part number 3043649, is a critical component in the automotive and heavy-duty truck industry. This screw is essential for the assembly and maintenance of various truck components due to its robust design and reliable performance.

Basic Concepts of Hexagon Flange Head Cap Screws

A Hexagon Flange Head Cap Screw is characterized by its hexagonal head and a flange beneath the head. This design facilitates efficient torque application and provides a larger bearing surface, which helps distribute the load more evenly. Flange head screws are widely used across industries for their resistance to loosening and durability in demanding applications ¹.

Purpose and Role in Truck Operation

The 3043649 Hexagon Flange Head Cap Screw is designed to secure components in commercial trucks. It ensures the assembly and maintenance of truck parts by providing a strong and reliable fastening solution. This screw is particularly effective in applications where vibrations and dynamic loads are common, ensuring that components remain securely fastened over time ².

Key Features

The 3043649 features a hexagonal head design, allowing for easy and efficient torque application using standard tools. The flange beneath the head provides additional surface area, enhancing the screw’s ability to distribute loads and resist loosening. The material properties of this screw, typically a high-strength alloy, contribute to its durability and reliability in harsh environments.

Benefits

The 3043649 offers several benefits, including improved torque application due to its hexagonal head, enhanced resistance to loosening thanks to the flange design, and superior durability in demanding conditions. When compared to standard cap screws, this flange head screw provides a more secure fastening solution, particularly in applications where vibrations and dynamic loads are present.

Installation Guidelines

Proper installation of the 3043649 involves several steps to ensure secure and effective fastening. Begin by aligning the screw with the designated hole. Use a torque wrench to apply the recommended torque specification, ensuring that the screw is tightened to the manufacturer’s guidelines. It is important to check the alignment and ensure that the flange is seated properly against the surface to maximize the screw’s performance.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws may include loosening or damage due to excessive torque or environmental factors. To troubleshoot loose screws, re-tighten them to the specified torque and inspect for any signs of damage. If a screw is damaged, it should be replaced to maintain the integrity of the fastening. Regular maintenance, such as periodic inspection and re-tightening, can help prolong the lifespan of the fastener.

Cummins: Manufacturer Overview

Cummins Inc. is a leading manufacturer in the automotive and heavy-duty truck industry, known for its commitment to quality and innovation. The company has a long history of producing reliable and high-performance components, including the 3043649. Cummins’ reputation is built on its dedication to excellence in manufacturing, ensuring that its products meet the demanding requirements of commercial truck applications.

Cummins Hexagon Flange Head Cap Screw 3043649 in Engine Applications

The Cummins Hexagon Flange Head Cap Screw, part number 3043649, is a critical component in various engine assemblies. This part is designed to secure and hold different engine parts together, ensuring the integrity and functionality of the engine. Here’s how it fits into the listed engines:

K38 and K50 Engines

In the K38 and K50 engines, the 3043649 is often used to fasten components that require a robust and reliable connection. These engines, known for their durability and performance, benefit from the precision and strength of this screw, ensuring that parts remain securely fastened under high operational stresses.

N14 MECHANICAL, NH/NT 855, QSN14 CM876 N103, and QSNT14 CM876 N102 Engines

For the N14 MECHANICAL, NH/NT 855, QSN14 CM876 N103, and QSNT14 CM876 N102 engines, the 3043649 plays a pivotal role in maintaining the structural integrity of the engine. These engines, which are part of the Cummins portfolio, are utilized in heavy-duty applications and demand high-quality fasteners to withstand the rigors of their operational environment. The screw’s design ensures that it can handle the torque and pressure typical in these engines, providing a secure fastening solution that is essential for the engine’s longevity and performance.

The use of the 3043649 across these engines highlights its versatility and reliability in various engine configurations. Its application in these engines underscores the importance of using high-quality fasteners to ensure the engines operate efficiently and reliably.

Role of Part 3043649 Hexagon Flange Head Cap Screw in Engine Systems

The 3043649 is integral to the secure assembly and operation of various engine components. It is utilized in fastening the air compressor mounting bracket, ensuring the air compressor is firmly attached and operates efficiently. In the compressor coolant plumbing, this screw helps in maintaining the integrity of the coolant system by securing fittings and connections, which is essential for thermal management of the compressor.

Within the corrosion resistor and corrosion resistor bracket assemblies, the screw plays a role in securing these components, which are vital for protecting the engine from corrosive elements. Similarly, in the exhaust expansion adapter and exhaust manifold, it ensures that these components are tightly fastened, which is important for the efficient expulsion of exhaust gases and reduction of emissions.

The exhaust manifold mounting and exhaust mounting systems also benefit from the use of this screw, as it provides the necessary tension to keep these components in place under the high temperatures and pressures of the exhaust system. The front gear cover of the engine relies on this screw for a secure fit, which is essential for maintaining the alignment and protection of internal engine components.

In fuel system components such as the fuel filter and fuel filter mounting, the screw ensures that the filter is correctly installed, allowing for effective filtration of the fuel before it reaches the engine. The full flow oil filter assembly also uses this screw to secure the filter housing, which is critical for maintaining clean oil circulation within the engine.

For the manifold exhaust mounting and related components, the screw is used to maintain the structural integrity of the exhaust system, ensuring that all connections are secure and leak-free. In the oil bypass filter system, it secures the filter housing, allowing for the bypass of oil when the main filter becomes clogged.

The screw is also found in the turbocharger arrangement, where it is used in the turbocharger location and turbocharger mounting to ensure that the turbocharger is securely attached to the engine, allowing for efficient forced induction.

Lastly, in the water filter system, the screw is employed to secure the filter housing, ensuring that the water filtration process is effective in removing contaminants from the engine’s cooling system.

Conclusion

The Cummins Hexagon Flange Head Cap Screw, part number 3043649, is a versatile and reliable component essential for the secure assembly and operation of various engine and truck components. Its robust design, efficient torque application, and resistance to loosening make it a critical fastener in demanding automotive and heavy-duty truck applications.