3073008
Hexagon Head Cap Screw
Cummins®

The Hexagon Head Cap Screw is a common fastening component used extensively in the assembly and maintenance of commercial trucks. This screw is characterized by its hexagonal head, which allows for efficient torque application using standard tools. Cummins Inc., a leading manufacturer in the commercial truck industry, offers the Hexagon Head Cap Screw under part number 3073008. This part is designed to meet the demanding requirements of truck operations, ensuring reliable performance and durability.

Basic Concepts of Hexagon Head Cap Screws

A Hexagon Head Cap Screw is a type of fastener that features a hexagonal head, which provides a larger surface area for tool engagement compared to other screw head types. This design allows for more effective torque application, reducing the risk of cam-out and ensuring secure fastening. The hexagonal shape is particularly advantageous in high-torque applications, as it allows for greater force to be applied without damaging the screw head ¹.

Purpose of the 3073008 Hexagon Head Cap Screw in Truck Operations

The 3073008 Hexagon Head Cap Screw by Cummins plays a significant role in the operation and maintenance of commercial trucks. It is commonly used in various truck assemblies, including engine components, chassis parts, and body attachments. This screw ensures that critical components remain securely fastened, contributing to the overall structural integrity and safety of the vehicle. Examples of its application include securing engine mounts, attaching body panels, and fastening chassis components ².

Key Features

The 3073008 Hexagon Head Cap Screw is engineered with 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 coarse thread, which allows for quick and secure fastening. Additionally, it may include unique design elements such as a countersunk head for flush mounting or a corrosion-resistant coating to extend its lifespan in harsh operating conditions ³.

Benefits

Using the 3073008 Hexagon Head Cap Screw offers several benefits. Its high-strength material composition and coarse thread design contribute to improved fastening strength, ensuring that components remain securely attached. The hexagonal head allows for efficient torque application, reducing the likelihood of loosening over time. Furthermore, the screw’s durability and resistance to corrosion make it suitable for use in the demanding environments typical of commercial truck operations ⁴.

Installation Guidelines

Proper installation of the 3073008 Hexagon Head Cap Screw is crucial for ensuring secure fastening and longevity. To install the screw, use a torque wrench to apply the specified torque, which can be found in the manufacturer’s guidelines. It is important to use the correct tool to engage the hexagonal head, ensuring that the screw is tightened to the appropriate level without over-torquing. Following these best practices will help maintain the integrity of the fastening and prevent damage to the screw or the components being joined.

Troubleshooting and Maintenance

Common issues associated with Hexagon Head Cap Screws include loosening, corrosion, and damage to the screw head. To troubleshoot these problems, regularly inspect the screws for signs of wear or corrosion. If a screw appears loose, re-tighten it to the specified torque. In cases of severe corrosion or damage, replace the screw to ensure continued reliable performance. Maintenance tips include applying a thread locker to prevent loosening and using corrosion-resistant coatings to protect the screw in harsh environments.

Cummins: A Brief Overview

Cummins Inc. is a globally recognized leader in the design, manufacture, and distribution of diesel and natural gas engines, as well as related technologies. With a history spanning over a century, Cummins has established a strong reputation for quality and innovation in the commercial truck industry. The company offers a comprehensive range of products, including engines, filtration systems, and aftermarket parts, all designed to meet the rigorous demands of truck operations. Cummins’ commitment to excellence and customer satisfaction makes it a trusted source for truck components, including the 3073008 Hexagon Head Cap Screw.

Hexagon Head Cap Screw 3073008 in Cummins Engines

The Cummins Hexagon Head Cap Screw part number 3073008 is a versatile component used across various Cummins engine models. This screw is designed to secure different parts within the engine, ensuring that components remain tightly fastened and properly aligned. Here’s how this part fits into the broader range of Cummins engines:

C Series Engines

• 6C8.3
• C8.3 G
• C GAS PLUS CM556
• G855 CM558

The Hexagon Head Cap Screw 3073008 is integral in securing various components in the C Series engines. Its robust design ensures that parts such as engine covers, brackets, and other structural elements are held firmly in place, contributing to the engine’s overall stability and performance.

ISL and ISM Series Engines

• ISL G CM2180
• ISM CM570
• ISM CM570/870
• ISM CM876

In the ISL and ISM series, the 3073008 screw is used to fasten critical components, including those related to the fuel injection system, turbocharger, and other high-stress areas. Its precision and strength are crucial in maintaining the integrity of these complex systems.

L Series Engines

• L GAS PLUS CM556
• L10 CELECT
• L10 GAS
• L10 MECHANICAL

The Hexagon Head Cap Screw 3073008 plays a significant role in the L Series engines by securing parts such as the engine block, cylinder heads, and various auxiliary components. Its application ensures that these parts are held securely, which is vital for the engine’s operational efficiency.

M Series Engines

• M11 CELECT
• M11 CELECT PLUS
• M11 MECHANICAL

In the M Series engines, the 3073008 screw is used to fasten components related to the engine’s internal mechanisms, including those associated with the fuel system and other critical assemblies. Its design ensures that these parts remain tightly fastened, contributing to the engine’s reliability and performance.

QSB Series Engines

• QSB4.5 CM850(CM2850)
• QSB6.7 CM850(CM2850)
• QSB7 CM2880 B117

The Hexagon Head Cap Screw 3073008 is used in the QSB Series engines to secure various components, including those related to the engine block, fuel system, and other structural elements. Its application is critical in maintaining the engine’s structural integrity.

QSC and QSK Series Engines

• QSC8.3 CM850(CM2850)
• QSK50 CM2150 MCRS
• QSK60 G CM2358 K110
• QSK60G
• QSL8.9 CM2150 L141
• QSL9 CM850(CM2850)
• QSM11 CM570

In the QSC and QSK Series engines, the 3073008 screw is used to fasten components such as the engine block, fuel system, and other critical parts. Its precision and strength are essential in ensuring that these parts remain securely fastened, contributing to the engine’s overall performance and durability.

Role of Part 3073008 Hexagon Head Cap Screw in Engine Systems

The 3073008 Hexagon Head Cap Screw is integral to the assembly and securement of various components within engine systems. Its application spans across multiple subsystems, ensuring the stability and functionality of each part.

Air Cleaner and Fuel Filter Assembly

In the air cleaner system, the 3073008 screw is used to fasten the air cleaner housing to the engine compartment. This securement is vital for maintaining the integrity of the air filtration process, ensuring that clean air enters the engine. Similarly, in the fuel filter assembly, these screws help in mounting the filter securely, which is essential for the consistent flow of fuel to the engine.

Alternator and Drive Systems

For the alternator drive and alternator location, the 3073008 screws play a significant role in attaching the alternator to its designated spot on the engine. This secure attachment is necessary for the efficient operation of the alternator, which charges the battery and powers the electrical systems of the vehicle. Additionally, these screws are used in the mounting guard for the alternator, providing additional stability and protection.

Engine Cooling System

Within the engine cooling system, the 3073008 screws are employed in the thermostat housing and the base rail system. They ensure that the thermostat is firmly in place, allowing for precise temperature regulation of the engine. The screws also secure the base rail, which is part of the coolant distribution network, ensuring efficient heat dissipation from the engine.

Fuel System Accessory Mounting

In the fuel system accessory mounting, these screws are used to attach various components such as the fuel control module and other accessories. This secure attachment ensures that the fuel system operates smoothly, providing the engine with a consistent fuel supply.

Belt Tensioner and Marine Gear

The 3073008 screws are also found in the belt tensioner bracket and kit, where they help in maintaining the correct tension of the belts that drive various engine components. In marine gear applications, these screws ensure that the gear housing is securely fastened, which is essential for the reliable operation of marine engines.

Ignition System

Lastly, in the ignition system, these screws are used to mount various ignition components, ensuring that they are securely in place and function correctly. This is vital for the engine’s starting process and overall performance.

Overall, the 3073008 Hexagon Head Cap Screw is a versatile fastener that contributes to the secure and efficient operation of numerous engine components.

Conclusion

The 3073008 Hexagon Head Cap Screw by Cummins is a critical component in the assembly and maintenance of commercial trucks and various Cummins engine models. Its robust design, high-strength material, and efficient torque application make it an essential fastener for securing critical components across multiple subsystems. Proper installation and maintenance of this part ensure the reliability and performance of truck and engine operations.