3963450
Hexagon Flange Head Cap Screw
Cummins®

Introduction

The Hexagon Flange Head Cap Screw, identified by part number 3963450, is a component manufactured by Cummins, a well-established name in the automotive and heavy-duty truck industry. This screw is significant in commercial trucks due to its robust design and reliable performance, contributing to the overall efficiency and durability of truck components.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener 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 distribution of clamping force. Within a truck’s mechanical system, this screw serves to securely fasten various components, ensuring they remain in place under operational stress ¹.

Purpose and Role in Truck Operation

This Cummins part plays a role in the operation of a truck by providing secure fastening for critical components. Its applications range from engine mounts to chassis assemblies, where it helps maintain structural integrity and operational stability. The screw’s design ensures that components remain firmly attached, even under the dynamic conditions experienced by commercial trucks.

Key Features

The 3963450 features a hexagonal head that facilitates easy and precise tightening with common tools. Its flange design enhances the distribution of clamping force, reducing the risk of component damage. Additionally, the screw is crafted from high-quality materials, offering excellent resistance to corrosion and wear, which contributes to its performance and durability in demanding truck environments ².

Benefits

This screw offers several benefits, including enhanced fastening security due to its flanged design, which prevents loosening under vibration. Its material properties provide resistance to environmental factors such as moisture and chemicals, ensuring long-term reliability. Furthermore, its compatibility with various truck components makes it a versatile choice for maintenance and repair tasks.

Installation Process

Proper installation of the 3963450 involves several steps to ensure optimal performance. Begin by selecting the appropriate screw size for the application. Use a torque wrench to apply the recommended torque specification, ensuring the screw is tightened to the manufacturer’s guidelines. It is important to avoid over-tightening, which can lead to damage, and under-tightening, which may result in insufficient clamping force.

Troubleshooting and Maintenance

Common issues with the 3963450, such as loosening or corrosion, can often be addressed through regular inspection and maintenance. If loosening is detected, re-tighten the screw to the specified torque. In cases of corrosion, cleaning the affected area and applying a suitable anti-corrosion treatment can help restore the screw’s performance. Regular maintenance checks can prevent issues and ensure the longevity of the screw.

Cummins Overview

Cummins is a reputable manufacturer in the automotive and heavy-duty truck industry, known for its commitment to producing high-quality components. With a history of innovation and excellence, Cummins has established itself as a trusted provider of automotive solutions, offering products that meet the demanding requirements of commercial truck operations. Their focus on quality and performance is evident in the design and manufacturing of components like the 3963450.

Hexagon Flange Head Cap Screw 3963450 in Cummins Engines

The Hexagon Flange Head Cap Screw part number 3963450, manufactured by Cummins, is a critical component in several of their engine models. This screw is designed to provide secure fastening in applications where a strong, reliable connection is essential.

QSF2.8 Series

The QSF2.8 series engines, specifically the QSF2.8 CM2880 F104, QSF2.8 CM2880 F105, QSF2.8 CM2880 F108, and QSF2.8 CM2880 F114, utilize the 3963450 screw in several key areas. These engines are known for their robust design and are often used in heavy-duty applications. The screw is typically employed in securing various engine components, ensuring that they remain tightly fastened under operational stresses.

QSK50 Series

In the QSK50 series, the QSK50 CM2350 K108 engine incorporates the 3963450 screw in its assembly. This engine is designed for high-performance applications, and the screw plays a vital role in maintaining the integrity of the engine’s structure. It is used in areas where a strong, reliable fastening is necessary to withstand the rigors of continuous operation.

QST30 Series

The QST30 CM2350 T101 engine also employs the 3963450 screw. This engine is known for its efficiency and reliability, and the screw is used in various critical applications within the engine. Its design ensures that the engine components remain securely fastened, contributing to the overall performance and longevity of the engine.

Role of Part 3963450 Hexagon Flange Head Cap Screw in Engine Systems

The part 3963450 is integral in securing and maintaining the structural integrity of various engine components. Its robust design ensures a firm and reliable connection, which is essential for the efficient operation of the engine system.

Exhaust Brake Kit

In the exhaust brake kit, the Hexagon Flange Head Cap Screw is used to fasten components that regulate the flow of exhaust gases. This helps in enhancing the braking efficiency of the vehicle by utilizing engine compression.

Flywheel

When installed in the flywheel assembly, this screw plays a role in securing the flywheel to the crankshaft. This connection is vital for the smooth transfer of power from the engine to the transmission.

Fuel Control Module

Within the fuel control module, the screw is employed to secure the module housing. This ensures that the module remains stable and functions correctly, contributing to precise fuel delivery and engine performance.

Manifold

In the manifold, the Hexagon Flange Head Cap Screw is used to attach the manifold to the engine block. This secure attachment is necessary for maintaining the integrity of the air and fuel mixture delivery system.

Air Intake

For the air intake system, the screw helps in fastening the air intake components. This ensures a stable and leak-free connection, which is important for optimal air flow into the engine.

Engine Control Module (ECM) and Fuel Control Module

In both the ECM and fuel control module, the screw is utilized to secure the module casings. This ensures that the modules are firmly in place, allowing for reliable operation and communication with other engine components.

Vacuum Pump Kit

In the vacuum pump kit, the screw is used to attach the pump to the engine or other components. This secure attachment is essential for the efficient operation of the vacuum system, which is often used for various engine functions such as brake boost and emissions control.

Conclusion

The Hexagon Flange Head Cap Screw part number 3963450 by Cummins is a vital component in the assembly and operation of various Cummins engine models. Its robust design and reliable performance ensure the secure fastening of critical engine components, contributing to the overall efficiency and durability of the engine system. Regular maintenance and proper installation are key to maximizing the longevity and performance of this essential screw.