3902735
Self Tapping Metal Screw
Cummins®

The Cummins 3902735 Self Tapping Metal Screw is a specialized fastener designed for use in commercial trucks. It is engineered to provide secure and reliable fastening solutions in various applications within the truck’s structure and components. This screw is particularly valued for its ability to tap its own threads into metal surfaces, simplifying the installation process and enhancing the overall efficiency of truck maintenance and assembly ¹.

Basic Concepts of Self Tapping Metal Screws

Self tapping metal screws are designed to create their own mating threads in a material as they are driven in. This eliminates the need for pre-tapping, which can save time and labor during installation. These screws are commonly used across various industries, including automotive, construction, and electronics, for their convenience and reliability ². They are particularly useful in applications where speed and ease of installation are crucial.

Purpose and Application in Commercial Trucks

In commercial trucks, the Cummins 3902735 Self Tapping Metal Screw plays a significant role in both the assembly and maintenance of various components. It is commonly used in applications where secure fastening is required without the need for pre-drilled holes. Specific areas of application include attaching body panels, securing brackets, and fastening interior components. Its use ensures that parts remain firmly in place, contributing to the structural integrity and safety of the vehicle ³.

Key Features

The Cummins 3902735 Self Tapping Metal Screw boasts several key features that enhance its performance. It is typically made from high-strength steel, ensuring durability and resistance to wear. The thread design is optimized for efficient thread cutting and secure fastening. Additionally, the screw may feature a coating or treatment to improve corrosion resistance, making it suitable for use in harsh environments commonly encountered by commercial trucks.

Benefits

Using the Cummins 3902735 Self Tapping Metal Screw offers several advantages. Its design allows for quick and easy installation, reducing labor time and costs. The screw’s durability ensures long-lasting fastening solutions, minimizing the need for frequent replacements. Furthermore, its resistance to corrosion enhances the screw’s longevity, especially in outdoor and industrial settings where exposure to moisture and chemicals is common.

Installation Process

Proper installation of the Cummins 3902735 Self Tapping Metal Screw is crucial for ensuring optimal performance and longevity. The process involves selecting the appropriate drill bit size for the pilot hole, if necessary, to facilitate easier screw insertion. The screw should be driven in using a powered screwdriver or drill at a consistent speed to avoid stripping the threads. It is important to ensure the screw is fully seated to achieve maximum holding power.

Maintenance and Troubleshooting

Regular inspection of the Cummins 3902735 Self Tapping Metal Screw is recommended to ensure it remains secure and functional. Signs of corrosion or loosening should be addressed promptly to prevent failure. In cases where a screw becomes stripped or damaged, replacement is advised to maintain the integrity of the fastening. Proper torque settings should be followed during installation to avoid over-tightening, which can lead to thread damage.

Cummins 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 has established a reputation for innovation, quality, and reliability in the automotive and commercial truck industries. The company’s commitment to excellence is reflected in its wide range of products, including the Cummins 3902735 Self Tapping Metal Screw, which is designed to meet the demanding requirements of commercial truck applications.

Compatibility of Self Tapping Metal Screw (Part 3902735) with Cummins Engines

The Self Tapping Metal Screw (Part 3902735) manufactured by Cummins is designed to fit a variety of Cummins engines, ensuring secure fastening in various applications. Here is a detailed breakdown of its compatibility with the specified engine models:

4B3.9 and 6B5.9 Engines

The Self Tapping Metal Screw is compatible with both the 4B3.9 and 6B5.9 engines. These engines are known for their robust performance and reliability, often used in heavy-duty applications. The screw provides a reliable fastening solution for components within these engines, ensuring longevity and stability.

6C8.3 and ISB5.9G CM2180 Engines

This screw also fits seamlessly with the 6C8.3 and ISB5.9G CM2180 engines. These engines are part of Cummins’ advanced lineup, offering high efficiency and power. The Self Tapping Metal Screw is engineered to meet the stringent requirements of these high-performance engines, providing a secure and durable fastening option.

B3.9 G, B5.9 G, and B5.9 GAS PLUS CM556 Engines

The 3902735 screw is also suitable for the B3.9 G, B5.9 G, and B5.9 GAS PLUS CM556 engines. These engines are designed for versatility and efficiency, often used in a range of applications from industrial to commercial use. The screw’s design ensures it can handle the specific demands of these engines, providing a dependable fastening solution.

C GAS PLUS CM556 and C8.3 G Engines

For the C GAS PLUS CM556 and C8.3 G engines, the Self Tapping Metal Screw is an ideal choice. These engines are known for their reliability and performance in various conditions. The screw’s compatibility with these engines ensures that it can withstand the operational stresses and provide a secure fastening mechanism.

G5.9, G5.9 CM558, and G8.3 Engines

Lastly, the 3902735 screw fits the G5.9, G5.9 CM558, and G8.3 engines. These engines are designed for durability and efficiency, often used in demanding environments. The screw’s design ensures it can provide a strong and reliable fastening solution for these engines, contributing to their overall performance and longevity.

Role of Part 3902735 Self Tapping Metal Screw in Engine Systems

The part 3902735 Self Tapping Metal Screw is instrumental in securing various components within engine systems, ensuring stability and integrity throughout operation.

In the breather system, this screw is used to fasten the breather housing to the engine block, allowing for controlled ventilation of the crankcase. This helps in maintaining optimal pressure levels and preventing the buildup of contaminants.

Within the crankcase, the screw plays a part in attaching the crankcase cover, which encases the crankshaft and connecting rods. This secure attachment is vital for the structural integrity of the crankcase.

For devices such as signal generating units, the screw ensures that these components are firmly mounted to the engine, providing a stable platform for accurate signal transmission.

In the flywheel housing, the screw is employed to secure the housing to the engine block. This is essential for maintaining the alignment and balance of the flywheel, which is critical for smooth engine operation.

The flywheel itself may utilize this screw in its attachment to the crankshaft, ensuring that it remains securely in place during engine rotation.

Multiple housings throughout the engine, including those for the fuel system and plumbing components, rely on this screw for secure attachment. This includes the housing for the Positive Displacement Compressor (PDC) and the muffler, ensuring these parts remain fixed and operate efficiently.

Lastly, in kits that include various engine components, the part 3902735 Self Tapping Metal Screw is often used to assemble and secure these parts, facilitating easier installation and maintenance.

Conclusion

The Cummins 3902735 Self Tapping Metal Screw is a critical component in the assembly and maintenance of commercial trucks and various Cummins engines. Its design and features ensure secure, durable, and efficient fastening solutions, contributing to the overall performance and longevity of the vehicles and engines it is used in.