3093973
Hexagon Flange Head Cap Screw
Cummins®

Introduction

The Cummins 3093973 Hexagon Flange Head Cap Screw is a specialized fastener designed for commercial truck applications. This screw ensures the secure assembly of various truck components, contributing to the vehicle’s reliability and performance. Its design and material properties are tailored to meet the demanding requirements of heavy-duty truck operations ¹.

Basic Concepts

A Hexagon Flange Head Cap Screw is characterized by its hexagonal head and flanged base. The hexagonal head allows for efficient torque application using standard tools, while the flange provides additional surface area for load distribution and prevents the screw from being driven into the material. This screw type is commonly used in applications requiring high strength and resistance to loosening ².

Purpose and Role in Truck Operation

This Cummins part plays a significant role in the operation and maintenance of commercial trucks. It is utilized in various components such as engine mounts, transmission housings, and chassis assemblies. By securely fastening these critical parts, the screw helps maintain the structural integrity and alignment of the truck, ensuring optimal performance and safety ³.

Key Features

The 3093973 boasts several key features that enhance its performance and durability. Its hexagonal head design allows for precise and efficient torque application, reducing the risk of stripping or rounding. The flange characteristic provides additional load-bearing surface, distributing the clamping force more evenly and minimizing the risk of the screw sinking into the material. Additionally, the screw is crafted from high-strength materials, offering excellent resistance to corrosion and wear, which is vital in the harsh environments often encountered by commercial trucks.

Benefits

The benefits of using this part include improved torque application due to its hexagonal head, which allows for better grip and reduced slippage during tightening. The flange design enhances load distribution, providing a more secure fastening solution. Furthermore, the screw’s material properties contribute to its resistance to loosening over time, even under dynamic loads and vibrations commonly experienced in truck operations.

Installation and Usage Guidelines

To ensure optimal performance and longevity, the 3093973 should be installed following specific guidelines. Begin by ensuring the mating surfaces are clean and free of debris. Use a torque wrench to apply the recommended torque specification, avoiding over-tightening which can lead to thread damage or material deformation. It is also advisable to apply a thread locker compound to prevent loosening due to vibrations.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws include loosening over time and corrosion. To address these, regular inspections should be conducted to check for any signs of wear or damage. If loosening is detected, re-torque the screw to the specified value and consider applying a thread locker. In cases of corrosion, the affected screw should be replaced to prevent further degradation and ensure the integrity of the fastening.

Compatibility and Applications

The 3093973 is designed to be compatible with a wide range of truck models and applications. Its versatility allows it to be used in various truck components and systems, ensuring reliable performance across different makes and models.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a rich history of innovation and quality, Cummins has established a strong reputation in the commercial truck industry. The company’s commitment to excellence is evident in its comprehensive product range, which includes a variety of components designed to enhance the performance, reliability, and efficiency of commercial vehicles.

Cummins Engine Compatibility with Part 3093973

The Hexagon Flange Head Cap Screw, part number 3093973, manufactured by Cummins, is designed to fit a variety of Cummins engines. This part is integral in securing various components within the engine assembly, ensuring structural integrity and operational efficiency.

ISB CM550 and ISB CM850

The ISB CM550 and ISB CM850 engines are part of Cummins’ ISB series, known for their robust performance and reliability. The Hexagon Flange Head Cap Screw is used in these engines to fasten critical components, providing a secure connection that can withstand the operational stresses of these power units.

QSK60 CM850 MCRS and QSK60G

The QSK60 CM850 MCRS and QSK60G engines are part of Cummins’ QSK60 series, which is designed for heavy-duty applications. The Hexagon Flange Head Cap Screw is utilized in these engines to secure various parts, ensuring that the engine can operate under high loads and demanding conditions without compromising on safety or performance.

QST30 CM2350 T101 and QST30 CM552

The QST30 CM2350 T101 and QST30 CM552 engines are part of Cummins’ QST30 series, which is engineered for both on-highway and off-highway applications. The Hexagon Flange Head Cap Screw is integral in these engines, providing the necessary fastening for components that are subject to significant mechanical stresses. This ensures that the engines maintain their structural integrity and operational efficiency across diverse usage scenarios.

Hexagon Flange Head Cap Screw (Part 3093973) Component Usage

The Hexagon Flange Head Cap Screw, identified by part number 3093973, is integral to the assembly and maintenance of various engine components. Its robust design ensures secure fastening and reliable performance under demanding conditions.

Aftercooler and Aftercooler Assembly

In the aftercooler and its assemblies, whether for the left or right bank, the Hexagon Flange Head Cap Screw is used to fasten critical components. It secures the aftercooler to the engine framework, ensuring efficient cooling of the compressed air before it enters the engine cylinders. This screw’s flange head provides additional surface area for torque application, reducing the risk of stripping and ensuring a tight seal.

Air Intake Manifold

Within the air intake manifold, this screw plays a role in attaching the manifold to the engine block. The secure fastening is essential for maintaining the integrity of the air pathway, ensuring that air flows smoothly into the combustion chambers. The flange head design allows for easy access during maintenance, facilitating quick removal and reinstallation.

Turbocharger Arrangement

In turbocharger setups, the Hexagon Flange Head Cap Screw is employed to attach the turbocharger housing to the engine. This connection is vital for withstanding the high pressures and temperatures generated during operation. The screw’s design ensures a strong, vibration-resistant hold, which is crucial for the turbocharger’s efficient performance and longevity.

Breather and Crankcase Connection

For the breather and crankcase connection, this screw secures the breather system to the crankcase. Proper sealing is necessary to manage crankcase ventilation, preventing the buildup of pressure and contaminants. The flange head allows for precise torque application, ensuring a leak-free connection.

Water Outlet and Engine Mounting Plate

At the water outlet and engine mounting plate, the Hexagon Flange Head Cap Screw ensures that these components are firmly attached to the engine block. This is important for maintaining the structural integrity of the engine and ensuring that coolant flows efficiently through the system. The screw’s design helps in distributing the load evenly, reducing stress on the fastening points.

Thermostat Housing and Air Intake Manifold

In the thermostat housing and air intake manifold, this screw secures these components to the engine, ensuring they function correctly. The thermostat housing relies on a secure attachment to maintain proper coolant flow, while the air intake manifold requires a tight seal to prevent air leaks. The flange head provides the necessary surface area for reliable fastening.

Alternator and Water Outlet Connection Mounting

Finally, in the alternator and water outlet connection mounting, the Hexagon Flange Head Cap Screw ensures these components are securely fastened to the engine. This is essential for the alternator’s stable operation and the efficient management of coolant flow. The screw’s design allows for easy maintenance access, ensuring that these components can be serviced without complications.

Conclusion

Overall, the Hexagon Flange Head Cap Screw (part 3093973) is a versatile and reliable fastening solution across various engine components, contributing to the overall performance and durability of the engine system.