3329549
Hexagon Flange Head Cap Screw
Cummins®

The Hexagonal Flange Head Cap Screw, identified by part number 3329549, is a component manufactured by Cummins. This screw is significant in heavy-duty truck applications due to its robust design and reliable performance. Cummins, a well-established name in the automotive industry, ensures that this part meets the stringent demands of heavy-duty truck operations ¹.

Basic Concepts

A Hexagonal Flange Head Cap Screw is a type of fastener characterized by its hexagonal head and flanged base. The hexagonal head allows for efficient torque application using standard tools, while the flange provides additional surface area for distribution of clamping force. This design ensures secure fastening and reduces the risk of the screw head stripping or rounding off during installation or removal ². Within mechanical systems, these screws play a role in joining components securely, contributing to the overall structural integrity of the assembly.

Purpose and Role in Truck Operation

This Cummins part serves a specific purpose in heavy-duty trucks by securing critical components. Its role is to provide a strong, reliable fastening solution that can withstand the vibrations and stresses encountered in truck operations. By ensuring that components remain firmly attached, this screw contributes to the structural integrity and safety of the vehicle. It is often used in applications where high clamping force and resistance to loosening are required ³.

Key Features

The 3329549 features a hexagonal flange head design, which facilitates easy and secure tightening. It is composed of high-strength materials, typically alloy steel, which enhances its durability and resistance to wear. The flange at the base of the screw provides additional surface area, which helps in distributing the clamping force more evenly across the fastened components. This design reduces the likelihood of damage to the fastened surfaces and improves the overall performance of the screw.

Benefits

This part offers several benefits. Its design allows for improved fastening strength, making it suitable for applications where high clamping force is necessary. The hexagonal head ensures that torque can be applied efficiently, reducing the risk of stripping or rounding off the screw head. Additionally, the flange provides resistance to loosening, which is crucial in dynamic environments such as those found in heavy-duty trucks. The screw’s compatibility with various applications further enhances its versatility and utility.

Installation and Usage

Proper installation of this Cummins part is vital for achieving optimal performance. It is recommended to use the appropriate torque specifications provided by the manufacturer to ensure that the screw is tightened to the correct level without over-tightening, which could lead to damage. Standard tools such as socket wrenches are suitable for installation. Following best practices, such as cleaning the fastening surfaces and inspecting the screw for any defects before use, will help in achieving a secure and lasting fastening solution.

Troubleshooting and Maintenance

Common issues with the 3329549 may include loosening or corrosion. Regular inspection and maintenance can help identify and address these issues promptly. If loosening is detected, re-tightening the screw to the specified torque is recommended. In cases of corrosion, cleaning the affected areas and applying a suitable anti-corrosion treatment can prevent further degradation. Adhering to these maintenance practices will ensure the longevity and reliability of the screw.

Cummins Overview

Cummins is a renowned manufacturer in the automotive industry, with a history of producing high-quality components. The company is known for its commitment to innovation and excellence in manufacturing. Cummins’ reputation is built on a foundation of delivering reliable and durable products that meet the demanding requirements of heavy-duty applications. Their focus on quality and continuous improvement ensures that components like the 3329549 are designed to perform reliably in challenging environments.

Hexagonal Flange Head Cap Screw 3329549 in Cummins Engines

The 3329549, manufactured by Cummins, is a critical component in several of their engine models. This screw is designed to provide a secure fastening mechanism, ensuring that various parts of the engine remain tightly connected under operational conditions.

G8.3 and G855 CM558

In the G8.3 and G855 CM558 engines, the 3329549 is often used to secure the cylinder head to the engine block. This application is crucial for maintaining the integrity of the combustion chamber and ensuring that there are no leaks in the system.

GTA38 G CMEICS G116C and GTA855 CM558 (CM2358) G101

For the GTA38 G CMEICS G116C and GTA855 CM558 (CM2358) G101 engines, the 3329549 is typically employed in the assembly of the turbocharger housing. This ensures that the turbocharger is securely attached to the engine, which is vital for maintaining optimal performance and efficiency.

N14 G

In the N14 G engine, the 3329549 is used to fasten various components of the engine’s valve train. This includes securing the rocker arms and other related parts, ensuring that the engine’s valve operation is smooth and reliable.

QSK19 CM850 MCRS, QSK50 CM2150 K107, QSK50 CM2150 MCRS, QSK50 CM2350 K108

For the QSK19 CM850 MCRS, QSK50 CM2150 K107, QSK50 CM2150 MCRS, and QSK50 CM2350 K108 engines, the 3329549 is utilized in the assembly of the engine’s fuel injection system. This includes securing the fuel injectors and related components, which is essential for precise fuel delivery and engine performance.

QSL8.9 CM2150 L141 and QSL9 CM850 (CM2850)

In the QSL8.9 CM2150 L141 and QSL9 CM850 (CM2850) engines, the 3329549 is used to fasten the engine’s exhaust manifold. This ensures that the exhaust gases are properly directed and that there are no leaks in the exhaust system, which is important for both performance and emissions control.

Role of Part 3329549 Hexagonal Flange Head Cap Screw in Engine Systems

The 3329549 is integral to the assembly and functionality of various engine components. Its design allows for secure fastening, ensuring that components remain firmly in place under operational stress.

Aftercooler

In the aftercooler system, this screw is used to secure the mounting brackets and connections, ensuring efficient cooling of compressed air before it enters the engine.

Aftertreatment Mounting

For aftertreatment systems, the screw plays a role in attaching components such as catalytic converters and diesel particulate filters, maintaining the structural integrity of the system.

Air Cleaner

Within the air cleaner assembly, it secures the housing to the engine, ensuring a tight seal that prevents unfiltered air from entering the engine.

Air Compressor

In air compressor systems, the screw is employed to fasten various components, including the compressor housing and mounting brackets, ensuring reliable operation.

Air Crossover Connection

For air crossover connections, this screw ensures that the connection points between different air passages are secure, maintaining consistent airflow.

Base Rail

On the base rail of fuel systems, the screw is used to attach the rail to the engine block, providing a stable foundation for fuel injectors.

Electronic Governor

In electronic governor assemblies, it secures the governor to the engine, ensuring precise control over engine speed and performance.

Engine Cooling System

Within the engine cooling system, the screw is utilized to fasten components such as the thermostat housing and water pump, ensuring efficient coolant flow.

Fuel Control Module

For fuel control modules, the screw is essential in attaching the module to the engine, ensuring accurate fuel delivery.

Fuel Filter

In fuel filter assemblies, it secures the filter housing to the engine, maintaining a leak-free connection.

Fuel Governor

The screw is used in fuel governor systems to attach the governor to the engine, ensuring consistent fuel pressure.

Muffler

In exhaust systems, the screw secures the muffler to the exhaust pipe, ensuring a tight seal and reducing noise emissions.

Raw Water Pump

For raw water pumps, the screw is employed to fasten the pump housing to the engine, ensuring reliable coolant circulation.

Rear Drive Adapter

In rear drive systems, the screw secures the adapter to the engine, ensuring a stable connection for power transmission.

Thermostat Housing

The screw is crucial in attaching the thermostat housing to the engine, ensuring proper coolant flow and temperature regulation.

Turbocharger Arrangement

In turbocharger systems, the screw secures various components, including the turbocharger housing and mounting brackets, ensuring efficient air compression and engine performance.

Conclusion

The 3329549 Hexagonal Flange Head Cap Screw is a vital component in heavy-duty truck and engine applications. Its robust design, reliable performance, and secure fastening capabilities make it essential for maintaining the structural integrity and safety of various engine systems. Proper installation, regular maintenance, and adherence to manufacturer specifications ensure the longevity and effectiveness of this critical part.

References