3093898
Hexagon Head Cap Screw
Cummins®

Introduction

The Cummins 3093898 Hexagon Head Cap Screw is a specialized fastener designed for use in commercial trucks. It is engineered to meet the demanding requirements of heavy-duty applications, ensuring reliable performance and durability. This screw is integral to the assembly and maintenance of various truck components, contributing to the overall efficiency and safety of the vehicle.

Basic Concepts of Hexagon Head Cap Screws

A Hexagon Head Cap Screw is a type of fastener characterized by its hexagonal head, which allows for efficient tightening and loosening using a wrench or socket. These screws are commonly used in mechanical assemblies to secure components together. The hexagonal shape of the head provides a stable and secure grip, minimizing the risk of slippage during installation or removal. In commercial trucks, Hexagon Head Cap Screws are utilized in a variety of applications, from engine components to chassis parts, ensuring that critical connections remain intact under significant stress and vibration ¹.

Purpose and Role in Truck Operation

The Cummins 3093898 Hexagon Head Cap Screw plays a significant role in the operation and maintenance of commercial trucks. It is specifically designed to secure components that are subject to high stress and vibration, such as engine mounts, transmission housings, and chassis brackets. By providing a strong and reliable connection, this screw helps maintain the structural integrity of the truck, ensuring that all components function as intended. Its application areas within the truck include but are not limited to engine compartments, drivetrain systems, and suspension assemblies ².

Key Features

The Cummins 3093898 Hexagon Head Cap Screw boasts several key features that enhance its functionality. It is typically made from high-strength steel, ensuring durability and resistance to wear. The screw features a coarse thread, which provides excellent holding power and ease of installation. Additionally, the hexagonal head design allows for efficient torque application, reducing the risk of damage to the screw or surrounding components. Unique design elements may include a chamfered end for easy insertion and a corrosion-resistant coating to extend service life in harsh environments.

Benefits

Using the Cummins 3093898 Hexagon Head Cap Screw offers several advantages. Its high-strength material composition ensures durability, making it suitable for heavy-duty applications. The screw’s design provides excellent resistance to vibration, which is crucial in the dynamic environment of a commercial truck. Additionally, the hexagonal head allows for easy installation and removal, reducing maintenance time and effort. The corrosion-resistant coating further enhances its longevity, ensuring reliable performance over the truck’s lifespan ³.

Installation and Usage Guidelines

Proper installation of the Cummins 3093898 Hexagon Head Cap Screw is vital to ensure its effectiveness and longevity. Begin by cleaning the mating surfaces to remove any debris or contaminants. Use a torque wrench to install the screw, applying the recommended torque specification to avoid over-tightening, which can lead to damage, or under-tightening, which can compromise the connection. It is advisable to use a socket or wrench that fits the hexagonal head precisely to prevent rounding or slipping. For optimal results, follow the manufacturer’s guidelines for torque values and installation procedures.

Troubleshooting and Maintenance

Common issues associated with Hexagon Head Cap Screws include loosening due to vibration, corrosion, and wear. Regular inspection and maintenance can help identify and address these issues promptly. If a screw appears loose, it should be re-tightened to the specified torque. Corrosion can be mitigated by applying a protective coating or lubricant during installation. In cases of significant wear or damage, the screw should be replaced to maintain the integrity of the connection. Adhering to a routine maintenance schedule will help ensure the longevity and proper function of the screws.

Safety Considerations

When working with Hexagon Head Cap Screws, it is important to observe several safety practices. Always wear appropriate personal protective equipment (PPE), including gloves and safety glasses, to protect against injury. Use the correct tools for installation and removal to prevent damage to the screw or surrounding components. Ensure that the work area is clean and free of hazards to avoid accidents. Follow all manufacturer guidelines and safety instructions to maintain a safe working environment.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. Founded in 1919, Cummins has a long-standing reputation for quality and innovation in the commercial truck industry. The company is committed to providing reliable and efficient solutions that meet the needs of its customers, ensuring the performance and durability of their vehicles. Cummins’ dedication to excellence is evident in its comprehensive range of products, including the Cummins 3093898 Hexagon Head Cap Screw, which is designed to deliver superior performance in demanding applications.

Cummins Engine Part 3093898: Hexagon Head Cap Screw

The Cummins part number 3093898, a Hexagon Head Cap Screw, is a crucial component utilized across a variety of Cummins engines. This screw is integral to the assembly and maintenance of these engines, ensuring secure fastening in various applications.

ISB and QSB Series Engines

The Hexagon Head Cap Screw is employed in several ISB and QSB series engines. Specifically, it is used in:

• ISB CM550
• ISB/ISD 4.5 CM2150 B119
• QSB 4.5 CM850 (CM2850)
• QSB 5.9 44 CM550
• QSB 6.7 CM2250
• QSB 6.7 CM850 (CM2850)
• QSB 7 CM2880 B117

These engines, which span a range of power outputs and configurations, rely on the 3093898 screw for critical fastening tasks. The screw’s design, featuring a hexagonal head, allows for efficient torque application using standard tools, ensuring reliable and secure connections.

QST Series Engines

The Hexagon Head Cap Screw also finds application in the QST series engines, including:

• QST30 CM2350 T101
• QST30 CM552

In these engines, the screw is used in various assemblies where robust and dependable fastening is essential. The use of this screw in the QST series underscores its versatility and importance across different engine types and configurations.

The consistent use of the 3093898 Hexagon Head Cap Screw across these engines highlights its critical role in maintaining structural integrity and operational efficiency. This part’s reliability and performance are key to the overall durability and effectiveness of the engines it supports.

Role of Part 3093898 Hexagon Head Cap Screw in Engine Systems

The Part 3093898 Hexagon Head Cap Screw is integral to the assembly and functionality of several key components within engine systems. Its application ensures secure fastening and reliable operation across various engine subsystems.

Auxiliary Cooling System

In the auxiliary cooling system, the Hexagon Head Cap Screw is used to fasten components that regulate coolant flow and temperature. This includes securing brackets and mounts that hold the auxiliary water pump and associated hoses in place, ensuring efficient heat dissipation from the engine.

Engine Control Module (ECM) Mounting

For the Engine Control Module mounting, this screw plays a role in securing the ECM to its designated location within the engine bay. Proper fastening is essential for maintaining the integrity of the electrical connections and protecting the sensitive electronic components from vibrations and environmental factors.

Product Installation Package

Within the product installation package, the Hexagon Head Cap Screw is often included to facilitate the secure attachment of various engine components during the installation process. This ensures that all parts are correctly positioned and fastened, contributing to the overall stability and performance of the engine.

Refrigerant Compressor

In the refrigerant compressor assembly, the screw is utilized to fasten the compressor housing and mounting brackets. This secure attachment is vital for maintaining the compressor’s alignment and operational efficiency, directly impacting the engine’s cooling performance.

Thermostat (Top Level Assembly) Housing

For the thermostat (top level assembly) housing, the Hexagon Head Cap Screw ensures that the thermostat housing is firmly attached to the engine block. This secure fitting is necessary for maintaining the integrity of the coolant pathway and ensuring consistent engine temperature regulation.

Thermostat Housing

In the thermostat housing, the screw is employed to fasten the housing to the engine, preventing leaks and ensuring that the thermostat operates within its designed parameters. This contributes to the engine’s thermal management system.

Thermostat Housing Arrangement

The thermostat housing arrangement benefits from the use of this screw to secure multiple components together. This includes fastening the housing to the water outlet and ensuring that all connections are tight and leak-free, which is essential for proper coolant circulation.

Water Outlet Connection

For the water outlet connection, the Hexagon Head Cap Screw is used to secure the outlet to the engine block or thermostat housing. This ensures a robust connection that can withstand the pressures and temperatures of the cooling system.

Water Outlet Connection Mounting

Finally, in the water outlet connection mounting, the screw plays a role in securing the mounting brackets and ensuring that the water outlet is correctly positioned. This is important for maintaining the structural integrity of the cooling system and ensuring efficient coolant flow.

Conclusion

The Cummins 3093898 Hexagon Head Cap Screw is a vital component in the assembly and maintenance of commercial trucks and Cummins engines. Its robust design, high-strength material, and corrosion-resistant features make it suitable for heavy-duty applications. Proper installation, regular maintenance, and adherence to safety practices ensure the longevity and reliability of this critical fastener.