4993206
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 4993206, is a specialized fastener produced by Cummins, a renowned manufacturer in the commercial vehicle industry. This screw is integral to the assembly and maintenance of various components in commercial trucks, ensuring secure and reliable fastening solutions.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of bolt characterized by its hexagonal head and a flange that sits against the surface of the material being fastened. This design provides additional bearing surface and helps distribute the load more evenly, reducing the risk of damage to the fastened material. Within mechanical systems, these screws play a role in securing components together, ensuring structural integrity and operational reliability ¹.

Purpose and Role in Truck Operation

This Cummins part is utilized in various applications within truck operations. It is commonly employed in the fastening of engine components, chassis parts, and other critical assemblies. By providing a secure and stable connection, this screw helps maintain the structural integrity of the truck, ensuring that components remain firmly in place under varying operational conditions.

Key Features

The 4993206 Hexagon Flange Head Cap Screw boasts several key features that enhance its performance and reliability. Its hexagonal flange head design allows for easy tightening and loosening using standard tools, while the flange provides additional surface area to distribute the load. The screw is typically made from high-strength materials, such as alloy steel, to withstand the rigors of heavy-duty applications. Additionally, it features precise threading specifications to ensure a secure fit and optimal performance ².

Benefits

This part offers several benefits that make it suitable for heavy-duty applications. Its design enhances fastening security, reducing the likelihood of loosening over time. The flange head provides additional bearing surface, which helps prevent damage to the fastened material. Furthermore, the high-strength material composition ensures durability and resistance to wear, making it an ideal choice for commercial trucks.

Installation Considerations

Proper installation of the 4993206 Hexagon Flange Head Cap Screw is vital to ensure optimal performance and longevity. It is important to follow torque specifications provided by the manufacturer to achieve the correct tension without over-tightening, which could lead to damage. Using the appropriate tools and techniques during installation will help maintain the screw’s integrity and ensure a secure connection.

Maintenance and Troubleshooting

Regular maintenance of the 4993206 Hexagon Flange Head Cap Screw is important to identify and address potential issues such as corrosion or loosening. Inspecting the screw periodically and tightening it as necessary can help prevent failures. If corrosion is detected, cleaning the affected area and applying a suitable corrosion-resistant coating can mitigate further damage. Addressing these issues promptly will help maintain the screw’s performance and extend its service life.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a strong reputation in the automotive industry, Cummins is committed to delivering high-quality components for commercial vehicles. The company’s focus on innovation, reliability, and customer satisfaction has established it as a trusted name in the industry, providing solutions that meet the demanding requirements of heavy-duty applications ³.

Hexagon Flange Head Cap Screw Part 4993206 in Cummins Engines

The Hexagon Flange Head Cap Screw part number 4993206 is a critical component in various Cummins engines, ensuring secure fastening and structural integrity. This part is designed to fit seamlessly into the engine architecture, providing a reliable connection between different engine parts.

ISL9 Series Engines

The ISL9 series engines, including the ISL9 CM2150 SN and ISL9.5 CM2880 L138, utilize the 4993206 screw in several key areas. These engines are known for their robust performance and are often used in heavy-duty applications. The screw’s flange head design provides a large bearing surface, which is essential for distributing the load evenly and preventing damage to the engine components.

L8.9 Series Engines

The L8.9 series engines, such as the L8.9 CM2670 L134C and L9 CM2670 L128B, also incorporate the 4993206 screw. These engines are designed for medium-duty applications and benefit from the screw’s ability to maintain tight tolerances under high-stress conditions. The flange head of the screw ensures a secure fit, which is crucial for maintaining the alignment and stability of the engine components.

QSC8.3 and QSL8.9 Series Engines

The QSC8.3 CM2880 C102 and QSL8.9 CM2150 L141 engines are part of Cummins’ Quantum Series, which is known for its efficiency and reliability. The 4993206 screw is used in these engines to secure various parts, including those that require precise alignment and fastening. The screw’s design allows for easy installation and removal, which is beneficial during maintenance and repair operations.

QSL9 Series Engine

The QSL9 CM850 (CM2850) engine, another member of the Quantum Series, also employs the 4993206 screw. This engine is designed for high-performance applications and requires components that can withstand significant stress and pressure. The screw’s hexagonal flange head provides a strong and reliable fastening solution, ensuring that the engine components remain securely in place.

Role of Part 4993206 Hexagon Flange Head Cap Screw in Engine Systems

Alternator Mounting

The 4993206 Hexagon Flange Head Cap Screw is instrumental in securing the alternator to the engine block. This screw ensures a firm and stable connection, which is essential for the alternator’s efficient operation. By maintaining a secure mount, the screw helps in minimizing vibrations that could otherwise affect the alternator’s performance and longevity. Additionally, it plays a part in ensuring proper alignment, which is vital for the alternator’s belt to function correctly without slipping or causing undue wear.

Flywheel Housing

In the context of the flywheel housing, the 4993206 Hexagon Flange Head Cap Screw is used to fasten the housing to the engine block or transmission. This secure attachment is necessary to maintain the integrity of the flywheel system, which is responsible for storing rotational energy and smoothing out the power delivery from the engine. The screw’s design allows for easy installation and removal, facilitating maintenance and repairs. Moreover, its hexagonal flange head provides additional surface area for torque application, ensuring that the flywheel housing remains firmly in place under the dynamic loads experienced during engine operation.

Conclusion

The Hexagon Flange Head Cap Screw part number 4993206 is a versatile and essential component in a range of Cummins engines. Its design ensures secure fastening and alignment, contributing to the overall performance and longevity of the engines. Proper installation, regular maintenance, and prompt troubleshooting are crucial to maximizing the benefits of this part in heavy-duty applications.