108604
Hexagon Head Cap Screw
Cummins®

The Cummins 108604 Hexagon Head Cap Screw is a vital component in the fastening systems of commercial trucks. This screw is designed to secure various components and assemblies, contributing to the structural integrity and proper function of the truck’s systems. Understanding its role and significance is essential for maintaining the efficiency and reliability of commercial vehicles.

Basic Concepts of Hexagon Head Cap Screws

A Hexagon Head Cap Screw is a type of fastener characterized by its hexagonal socket head. This design allows for efficient tightening and loosening using a suitable tool, such as a hex key or socket wrench. The hexagonal shape provides a robust interface that resists cam-out, ensuring that the tool remains engaged with the screw head during use. This feature is particularly beneficial in high-torque applications, where consistent and reliable fastening is required ¹.

Role of the 108604 Hexagon Head Cap Screw in Truck Operation

The 108604 Hexagon Head Cap Screw is utilized in various applications within commercial trucks. It is commonly employed to secure engine components, transmission parts, and chassis assemblies. By providing a strong and durable connection, this screw helps maintain the structural integrity of these critical systems. Its role in fastening ensures that components remain securely in place, even under the demanding conditions encountered in commercial truck operations ².

Key Features

The 108604 Hexagon Head Cap Screw boasts several key features that enhance its performance and durability. It is typically made from high-strength materials, such as alloy steel, which provides excellent tensile strength and resistance to wear. The screw features a fine or coarse thread, depending on the application, allowing it to grip securely into various materials. Additionally, it may be coated with a corrosion-resistant finish, such as zinc plating or a specialized coating, to protect against environmental factors that could lead to degradation ³.

Benefits

Using the 108604 Hexagon Head Cap Screw offers several advantages. Its high tensile strength ensures that it can withstand significant loads without failing, making it suitable for heavy-duty applications. The corrosion-resistant coating enhances its longevity, particularly in environments where exposure to moisture and chemicals is common. Furthermore, the hexagonal socket head allows for easy installation and removal, reducing the time and effort required for maintenance tasks.

Troubleshooting and Maintenance

Common issues with Hexagon Head Cap Screws include loosening due to vibration or thermal expansion and corrosion from exposure to harsh environments. Regular inspection and maintenance can help identify these issues early. Tightening screws to the manufacturer’s specified torque settings can prevent loosening, while applying a corrosion-inhibiting compound can protect against environmental damage. Replacing screws that show signs of wear or corrosion ensures continued reliable performance.

About Cummins

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 itself as a trusted name in the commercial vehicle industry. The company is renowned for its expertise in diesel engines and related technologies, consistently delivering innovative solutions that meet the demanding needs of its customers. Cummins’ commitment to quality and innovation is evident in its comprehensive range of products, including the 108604 Hexagon Head Cap Screw.

Hexagon Head Cap Screw 108604 in Cummins Engines

The Cummins Hexagon Head Cap Screw part number 108604 is a critical component in several of Cummins’ engine models. This part is designed to provide robust fastening capabilities, ensuring secure connections in various engine assemblies.

G855 and K19 Engines

In the G855 and K19 engines, the 108604 screw is utilized in applications where high strength and durability are essential. These engines benefit from the screw’s ability to withstand significant stress and maintain a tight, reliable connection.

K38 and K50 Engines

Similarly, the K38 and K50 engines incorporate the 108604 screw in their design. These engines, known for their reliability and performance, use this screw in critical areas to ensure the longevity and efficiency of the engine components.

N14 G Engine

The N14 G engine also relies on the 108604 screw for its structural integrity. This engine, often used in heavy-duty applications, requires a screw that can endure the rigors of continuous operation and heavy loads.

QSK19 CM2350 K105, QSK19 CM500, and QSK19 CM850 MCRS Engines

The QSK19 series engines, including the CM2350 K105, CM500, and CM850 MCRS models, utilize the 108604 screw in various assemblies. These engines are designed for demanding applications, and the screw’s high strength and precision fit are crucial for maintaining performance and reliability.

QSK19G and QSK50 CM2150 MCRS Engines

The QSK19G and QSK50 CM2150 MCRS engines also incorporate the 108604 screw in their construction. These engines are engineered for high-performance applications, and the screw’s ability to provide a secure fastening is essential for their operation.

V28 Engine

Lastly, the V28 engine uses the 108604 screw in its design. This engine, known for its power and efficiency, benefits from the screw’s durability and strength, ensuring that all components remain securely fastened under various operating conditions.

Role of Part 108604 Hexagon Head Cap Screw in Engine Systems

Part 108604 Hexagon Head Cap Screw is integral to the assembly and functionality of various engine components. It is utilized in securing and maintaining the structural integrity of the accessory drive, ensuring smooth operation of auxiliary systems connected to the engine.

In the air cleaner assembly, this screw plays a part in attaching the air cleaner-left side brace, contributing to the stability and alignment of the air filtration system. It is also involved in the mounting of the air cleaner, securing it in place to ensure efficient air flow and filtration.

For the conversion kit, part 108604 is used to fasten components, facilitating the adaptation of the engine to different specifications or requirements. It is similarly employed in the attachment of the crankshaft pulley, a component vital for the drive arrangement of the engine.

In fuel and lubricating systems, this screw is found in the fuel filter and lubricating oil filter assemblies. It secures the lubricating oil filter head, ensuring a tight seal and proper function of the filtration process.

The flywheel housing and heat exchanger housing also benefit from the use of this screw, as it helps in the secure mounting of these components, which are essential for the engine’s operation and thermal management.

In the context of the turbocharger and rocker arm housing, part 108604 is used to ensure these high-performance components are firmly attached, contributing to the engine’s efficiency and power output.

Additionally, this screw is part of the mounting process for the alternator, a key component in the engine’s electrical system, and is used in the installation of the shield for heat protection around various engine parts.

Overall, part 108604 Hexagon Head Cap Screw is a versatile fastener that plays a significant role in the assembly and secure operation of a wide range of engine components.

Conclusion

The Cummins 108604 Hexagon Head Cap Screw is a critical component in the fastening systems of commercial trucks and various Cummins engine models. Its high tensile strength, corrosion-resistant coating, and hexagonal socket head design make it suitable for heavy-duty applications and ensure reliable performance under demanding conditions. Regular maintenance and proper use of this screw are essential for maintaining the efficiency and reliability of commercial vehicles and engine systems.