3279054
Hexagon Head Cap Screw
Cummins®

The Cummins Hexagon Head Cap Screw, part number 3279054, is a specialized fastener designed for commercial truck applications. Cummins, a prominent name in the commercial truck industry, manufactures this component to meet the demanding requirements of heavy-duty truck operations. This screw is crucial for ensuring the reliability and efficiency of truck assemblies.

Basic Concepts of Hexagon Head Cap Screws

A Hexagon Head Cap Screw is characterized by its hexagonal head, which facilitates efficient tightening and loosening using a wrench or socket. The screw features a threaded shank that engages with internal threads in the mating part, providing a secure fastening solution. Cap screws are widely used across various industries for their strength and reliability in joining components ¹.

Purpose of the 3279054 Hexagon Head Cap Screw in Truck Operations

The 3279054 Hexagon Head Cap Screw is integral to the operation and maintenance of commercial trucks. It is commonly used in applications requiring high strength and durability, such as securing engine components, chassis parts, and other critical assemblies. Its role in these applications ensures that components remain firmly attached, contributing to the overall safety and performance of the truck.

Key Features

The 3279054 Hexagon Head Cap Screw boasts several key features that enhance its functionality and durability. It is composed of high-strength materials, typically alloy steel, which provides excellent resistance to wear and corrosion. The screw features a coarse thread type, which allows for quick and secure fastening. Its hexagonal head design facilitates easy installation and removal using standard tools, ensuring efficient maintenance procedures ².

Benefits

Using the 3279054 Hexagon Head Cap Screw offers several benefits. Its high-strength material composition ensures enhanced durability and resistance to loosening under vibration, a common issue in truck operations. The design of the screw also allows for ease of installation and removal, reducing maintenance time and effort. Additionally, its resistance to corrosion ensures long-term reliability in various operating conditions.

Installation Guidelines

Proper installation of the 3279054 Hexagon Head Cap Screw is crucial for ensuring its effectiveness and longevity. It is recommended to use a torque wrench to achieve the specified torque settings, which vary depending on the application and material being fastened. The use of the correct tools, such as a socket or wrench that fits the hexagonal head, ensures that the screw is tightened to the appropriate level without damage ³.

Troubleshooting and Maintenance

Common issues with Hexagon Head Cap Screws include loosening due to vibration and corrosion. Regular inspection and maintenance can help identify and address these issues early. If a screw shows signs of loosening, it should be re-tightened to the specified torque. In cases of corrosion, the affected screw may need to be replaced to ensure the integrity of the fastening. Proper lubrication during installation can also help prevent corrosion and ease future removal.

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 a strong reputation for quality and reliability in the commercial truck industry. The company’s extensive product range and commitment to innovation make it a trusted source for truck components, including the 3279054 Hexagon Head Cap Screw.

Applications and Use Cases

The 3279054 Hexagon Head Cap Screw is utilized in various applications within commercial trucks. It is commonly found in engine components, where it secures critical parts that are subject to high stress and vibration. Additionally, it is used in chassis assemblies and other structural components, ensuring the truck’s integrity and safety. Its versatility and strength make it suitable for a wide range of fastening applications in the truck industry.

Safety Considerations

When working with Hexagon Head Cap Screws, it is important to follow safety practices to avoid accidents and ensure compliance with industry standards. Proper handling and installation techniques should be employed to prevent injury and damage to the components being fastened. Additionally, regular maintenance and inspection of screws can help identify potential issues before they lead to failure, ensuring the continued safe operation of the truck.

Cummins Hexagon Head Cap Screw 3279054 in Engine Applications

The Cummins Hexagon Head Cap Screw part number 3279054 is a critical component used in various Cummins engine models. This part is designed to provide secure fastening in applications where high strength and durability are required. Below are the engines where this screw is utilized, grouped where applicable:

Cummins 4B3.9 and 6B5.9 Engines

The 4B3.9 and 6B5.9 engines, both part of the B series, utilize the 3279054 screw in several key areas. These engines are known for their robust design and are often used in heavy-duty applications. The screw ensures that components are tightly secured, maintaining the integrity of the engine under high stress conditions.

Cummins 6C8.3 and 6C8.3 G Engines

The 6C8.3 and 6C8.3 G engines also incorporate the 3279054 screw. These engines are part of the C series and are recognized for their versatility and efficiency. The screw is used in various mounting and fastening applications, ensuring that all parts are held firmly in place.

Cummins C GAS PLUS CM556 and ISB CM550 Engines

The C GAS PLUS CM556 and ISB CM550 engines are equipped with the 3279054 screw in several critical areas. These engines are designed for high performance and reliability, and the screw plays a vital role in maintaining the structural integrity of the engine components.

Cummins K38 and K50 Engines

The K38 and K50 engines, part of the K series, also use the 3279054 screw. These engines are known for their durability and are often used in demanding environments. The screw ensures that all components are securely fastened, providing the necessary stability and reliability.

Cummins QSK38 and QSK50 Engines

The QSK38 and QSK50 engines, which include models such as QSK38 CM2150 MCRS, QSK38 CM850 MCRS, QSK50 CM2150 K107, QSK50 CM2150 MCRS, and QSK50 CM2350 K108, utilize the 3279054 screw in various applications. These engines are designed for heavy-duty use and require components that can withstand significant stress. The screw is used in several key areas to ensure that all parts are securely fastened, providing the necessary strength and durability.

Role of Part 3279054 Hexagon Head Cap Screw in Engine Systems

In the intricate assembly of engine systems, the part 3279054 Hexagon Head Cap Screw serves as a fundamental fastening component, ensuring the secure attachment and alignment of various critical components.

Alternator and Its Mounting

The alternator, a vital component responsible for generating electrical power to charge the battery and power the electrical systems of the vehicle, relies on secure mounting to function effectively. The Hexagon Head Cap Screw is utilized to fasten the alternator to its designated location on the engine. This secure attachment ensures that the alternator remains stable during operation, minimizing vibrations that could otherwise lead to electrical issues or mechanical failure.

Drive and Fan Assembly

In the drive and fan assembly, the Hexagon Head Cap Screw plays a significant role in maintaining the integrity of the system. It is used to secure the fan to the drive mechanism, ensuring that the fan operates smoothly and efficiently to cool the engine. Proper fastening is essential to prevent any wobbling or misalignment that could reduce the effectiveness of the cooling system or cause damage to surrounding components.

Flywheel Housing and Mounting

The flywheel housing, which encases the flywheel and provides a mounting point for various engine components, requires robust fastening solutions. The Hexagon Head Cap Screw is employed to secure the flywheel housing to the engine block. This ensures that the housing remains firmly in place, allowing for precise alignment of the flywheel and smooth operation of the engine’s rotational components.

Front Power Take-Off Mounting Housing

In systems equipped with a front power take-off (PTO), the Hexagon Head Cap Screw is instrumental in securing the PTO mounting housing. This housing is critical for transferring power from the engine to auxiliary equipment. Secure fastening ensures that the PTO operates efficiently and reliably, without the risk of detachment or misalignment that could lead to operational failures.

General Housing and Support Structures

Across various engine components, including different types of housings and support structures, the Hexagon Head Cap Screw provides the necessary stability and alignment. Whether it’s securing a housing to the engine block or supporting an alternator in its designated location, this screw ensures that all components remain in their intended positions, contributing to the overall reliability and performance of the engine system.

Conclusion

The Cummins 3279054 Hexagon Head Cap Screw is a critical component in the assembly and maintenance of commercial truck engines. Its high-strength material composition, durable design, and ease of installation make it an essential part for ensuring the reliability and efficiency of truck operations. Proper installation, regular maintenance, and adherence to safety practices are crucial for maximizing the performance and longevity of this Cummins part.