3503347
Flat Head Cap Screw
Cummins®

The 3503347 Flat Head Cap Screw is a specialized fastener produced by Cummins, a leading manufacturer in the commercial truck industry. This screw is designed for use in various applications within commercial trucks, providing reliable fastening solutions that contribute to the overall performance and durability of the vehicle.

Basic Concepts of Flat Head Cap Screws

Flat head cap screws are a type of fastener characterized by a flat, countersunk head that sits flush with or below the surface of the material being fastened. These screws are commonly used in mechanical assemblies where a smooth surface finish is required, or where the screw head needs to be concealed. They function by securely joining components together, distributing load and resisting movement ¹.

Purpose of the 3503347 Flat Head Cap Screw in Truck Operation

The 3503347 Flat Head Cap Screw plays a role in the operation and maintenance of commercial trucks by securing various components. It is utilized in applications where a low-profile fastener is needed, such as in the attachment of panels, brackets, and other structural elements. Its design ensures that it remains unobtrusive while providing a strong and stable connection ².

Key Features

The 3503347 Flat Head Cap Screw is crafted from high-quality materials, ensuring durability and resistance to wear. It features a specific thread type that allows for secure fastening, and its flat head design enables it to sit flush with the surface of the material. Additionally, the screw may possess unique attributes such as corrosion resistance or enhanced tensile strength, which contribute to its performance in demanding environments.

Benefits

Using the 3503347 Flat Head Cap Screw offers several advantages. It provides improved fastening security, ensuring that components remain firmly in place even under vibration or stress. Its design also contributes to a smooth surface finish, which can be important in certain applications. Furthermore, the screw’s durability allows it to withstand harsh operating conditions, reducing the need for frequent replacements.

Installation Guidelines

To install the 3503347 Flat Head Cap Screw, begin by ensuring that the mating surfaces are clean and free of debris. Use the appropriate drill bit to create a pilot hole, if necessary, to guide the screw and prevent splitting of the material. Insert the screw using a suitable tool, such as a screwdriver or wrench, and tighten to the recommended torque specification to ensure a secure fit without over-tightening, which could damage the screw or the material.

Troubleshooting and Maintenance

Common issues with flat head cap screws include loosening due to vibration or corrosion over time. To address these issues, regularly inspect the screws for signs of wear or damage. If corrosion is present, consider using a corrosion-resistant coating or replacing the screw. To prevent loosening, ensure that the screw is properly torqued during installation and consider using a locking compound if additional security is required ².

Cummins: Manufacturer Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins is renowned for its commitment to quality and innovation. The company offers a wide range of products for the commercial truck industry, including engines, powertrain components, and aftermarket parts, all designed to meet the demanding requirements of professional drivers and fleet operators.

Cummins Flat Head Cap Screw 3503347 Compatibility

The Cummins Flat Head Cap Screw, part number 3503347, is a versatile component designed to fit a variety of Cummins engines. This screw is engineered to provide a secure fastening solution in various engine applications. Below is a detailed breakdown of its compatibility across different Cummins engine models:

Cummins 4B3.9 and 6B5.9 Engines

The 4B3.9 and 6B5.9 engines are part of Cummins’ range of medium-duty diesel engines. The Flat Head Cap Screw 3503347 is suitable for use in these engines, providing reliable fastening in areas that require precision and durability.

Cummins 6C8.3 and G5.9 Engines

The 6C8.3 and G5.9 engines are also medium-duty diesel engines, and the 3503347 screw is compatible with these models. Its design ensures a tight and secure fit, which is crucial for maintaining engine integrity and performance.

Cummins ISB CM550 and QSM11 CM570 Engines

The ISB CM550 and QSM11 CM570 engines are high-performance diesel engines used in various heavy-duty applications. The Flat Head Cap Screw 3503347 is engineered to meet the stringent requirements of these engines, providing a robust fastening solution that can withstand high stress and vibrations.

Cummins L10 Series Engines

The L10 series, which includes the L10 CELECT, L10 GAS, and L10 MECHANICAL engines, represents Cummins’ line of large diesel engines. The 3503347 screw is compatible with all variants of the L10 series, ensuring a secure fit in critical engine components.

Each of these engines benefits from the use of the 3503347 Flat Head Cap Screw, which is designed to provide a reliable fastening solution across a wide range of engine types and applications.

Role of Part 3503347 Flat Head Cap Screw in Engine Systems

The 3503347 Flat Head Cap Screw is integral to the assembly and maintenance of various engine components, ensuring secure fastening and reliable performance. Here’s how it fits into the provided components:

Turbocharger Systems

In aftermarket turbochargers and turbocharger housing repair kits, the flat head cap screw is used to fasten the turbocharger housing to the engine block or manifold. This secure attachment is vital for maintaining the integrity of the turbocharger system, which relies on precise alignment and sealing to function efficiently.

For turbocharger and connection assemblies, the screw ensures that all connections are tight, preventing leaks and ensuring that the turbocharger operates within its designed parameters. In turbocharger repair kits, it is often used to reassemble components after maintenance, guaranteeing that all parts are correctly aligned and secured.

Core Assemblies

In core assemblies such as H1C, H1E, H2A, H2C, H2D, H2S, WH2D, and WHIE, the flat head cap screw plays a role in attaching the core to the housing. This is essential for the structural stability of the turbocharger, as the core is a critical component responsible for compressing air to enhance engine performance.

Overhaul and Performance Kits

Within overhaul kits and performance parts (both AFC and non-AFC), the flat head cap screw is utilized to secure various components during the rebuild process. This includes fastening brackets, sensors, and other attachments that are crucial for the turbocharger’s operation.

Engine Oil Cooler

In the engine oil cooler, the flat head cap screw is employed to secure the cooler to the engine block or mounting bracket. This ensures that the cooler remains in place under operating conditions, allowing for effective heat dissipation from the engine oil.

Super Core Assembly

For the super core assembly - H2A, the screw is used to fasten the super core to its housing, ensuring that the high-performance core remains securely in place. This is particularly important in high-stress environments where the turbocharger is subjected to extreme conditions.

Turbocharger Kits

In turbocharger kits such as H1E Auto and H1E Indicator, the flat head cap screw is essential for assembling the turbocharger to the engine. It ensures that all components are correctly installed and that the turbocharger can operate efficiently without risk of detachment or misalignment.

Overall, the 3503347 Flat Head Cap Screw is a fundamental fastening component across various engine systems, contributing to the secure and efficient operation of turbochargers and related assemblies.

Conclusion

The 3503347 Flat Head Cap Screw is a critical component in the maintenance and operation of Cummins engines, providing reliable fastening solutions across a variety of applications. Its design and features ensure durability, resistance to wear, and a secure fit in demanding environments. Proper installation and maintenance of this Cummins part are essential to ensure the continued performance and longevity of engine components.