3925379
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3925379, is a component manufactured by Cummins. This screw is significant in the realm of commercial truck maintenance due to its robust design and reliable performance. Cummins, a well-established name in the industry, ensures that this part meets the high standards required for heavy-duty applications ¹.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by its hexagonal head and a flange that sits against the surface being fastened. This design allows for secure and efficient tightening using a wrench or socket. Within mechanical systems, these screws play a role in joining components securely, ensuring structural integrity and reliable operation ².

Purpose and Role in Truck Operation

The 3925379 Hexagon Flange Head Cap Screw is utilized in various applications within commercial trucks. It is often employed in areas where high tensile strength and resistance to loosening are required. This includes fastening engine components, securing chassis parts, and attaching body panels. Its role is to provide a strong, durable connection that can withstand the rigors of heavy-duty use ³.

Key Features

The 3925379 Hexagon Flange Head Cap Screw features a hexagonal flange head, which allows for easy and precise tightening. It is typically made from high-strength materials such as alloy steel, which enhances its durability and resistance to wear. The flange design provides additional surface area for load distribution, reducing the risk of the screw pulling through the material. Additionally, the screw may have a zinc-plated finish to protect against corrosion, extending its service life in various environments ⁴.

Benefits

Using the 3925379 Hexagon Flange Head Cap Screw offers several advantages. Its design provides improved fastening security, making it less likely to loosen over time compared to standard cap screws. The flange head distributes clamping force more effectively, reducing the risk of damage to the fastened material. Furthermore, the screw is easy to install and remove, facilitating maintenance and repair processes ⁵.

Installation and Usage

Proper installation of the 3925379 Hexagon Flange Head Cap Screw is vital for ensuring optimal performance. It should be tightened to the manufacturer’s specified torque settings to achieve the correct clamping force without over-tightening, which could damage the screw or the fastened components. Using the appropriate tools, such as a torque wrench, ensures accuracy. It is also important to ensure that the surfaces being fastened are clean and free of debris to prevent corrosion and ensure a secure connection ⁶.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws include loosening due to vibration and corrosion. Regular inspection and maintenance can help identify and address these problems early. If a screw shows signs of corrosion, it should be replaced to prevent failure. Additionally, ensuring that all screws are tightened to the correct torque specifications during routine maintenance can help prevent loosening ⁷.

Safety Considerations

When working with Hexagon Flange Head Cap Screws, it is important to follow safety practices to prevent injury and ensure the longevity of the components. This includes wearing appropriate personal protective equipment, such as gloves and safety glasses, to protect against sharp edges and flying debris. Proper storage in a dry, corrosion-resistant environment is also important to maintain the screws’ integrity ⁸.

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 built a reputation for quality and innovation in the commercial truck industry. The company’s commitment to excellence is evident in its wide range of products, which are designed to meet the demanding requirements of heavy-duty applications. Cummins’ focus on research and development ensures that its components, including the 3925379 Hexagon Flange Head Cap Screw, continue to evolve and provide reliable performance ⁹.

Cummins Engine Part 3925379: Hexagon Flange Head Cap Screw

The Cummins part number 3925379, a Hexagon Flange Head Cap Screw, is designed to be a versatile component that fits seamlessly into various Cummins engine models. This part is integral to the assembly and maintenance of several engine types, ensuring secure fastening and reliable performance.

Engine Compatibility

ISC8.3 CM2250 and ISL9 CM2250

The Hexagon Flange Head Cap Screw is compatible with the ISC8.3 CM2250 and ISL9 CM2250 engines. These engines are known for their robust performance and are often used in heavy-duty applications. The part ensures that critical components remain securely fastened, maintaining engine integrity and operational efficiency.

ISG12 CM2880 G107 and ISG12 G CMOH6.0 G111

For the ISG12 CM2880 G107 and ISG12 G CMOH6.0 G111 engines, the 3925379 part plays a role in securing various engine parts. These engines are designed for high-performance applications, and the screw’s design helps in maintaining the structural integrity of the engine under demanding conditions.

QSG12/X12 CM2350 G110 and QSK50 CM2350 K108

The part is also suitable for the QSG12/X12 CM2350 G110 and QSK50 CM2350 K108 engines. These engines are engineered for durability and efficiency, and the Hexagon Flange Head Cap Screw ensures that all components are tightly secured, contributing to the overall reliability of the engine.

X12 CM2350 X119B, X12 CM2670 X121B, X13 CM2670 X122B, and Z14 CM2670 Z103B

The 3925379 part is also compatible with the X12 CM2350 X119B, X12 CM2670 X121B, X13 CM2670 X122B, and Z14 CM2670 Z103B engines. These engines are designed for various applications, from industrial to marine, and the screw’s design ensures that all parts are securely fastened, enhancing the engine’s performance and longevity.

The Hexagon Flange Head Cap Screw is a critical component in the assembly and maintenance of these Cummins engines, ensuring that all parts are securely fastened and the engine operates efficiently.

Hexagon Flange Head Cap Screw in Engine Systems

The part 3925379 Hexagon Flange Head Cap Screw is integral to the assembly and functionality of various engine components. Its robust design ensures secure fastening, which is essential for maintaining the integrity and performance of the engine system.

Throttle Position Sensor (TPS) Module

In the TPS module, the Hexagon Flange Head Cap Screw is used to fasten the sensor housing to the throttle body. This secure attachment ensures accurate readings of the throttle position, which is vital for the Engine Control Unit (ECU) to adjust fuel delivery and ignition timing appropriately.

Fuel Control System

Within the fuel control system, these screws are employed to mount fuel injectors and pressure regulators. Proper fastening is necessary to prevent leaks and ensure consistent fuel delivery, which directly impacts engine performance and efficiency.

Nitrogen Oxide (NOx) Sensor

The Hexagon Flange Head Cap Screw plays a role in securing the NOx sensor to the exhaust system. Accurate mounting of this sensor is important for monitoring emissions and ensuring the engine operates within environmental regulations.

Ignition System

In the ignition system, these screws are used to attach ignition coils and spark plug wires. Secure fastening ensures reliable electrical connections, which are essential for consistent spark delivery and optimal combustion.

Gear Shift Control Valve

For the gear shift control valve, the Hexagon Flange Head Cap Screw is utilized to mount the valve housing. This ensures precise control over gear changes, contributing to smooth transmission operation and overall driving experience.

Pressure Regulator

Finally, in the pressure regulator assembly, these screws help in securing the regulator to the fuel rail. This attachment is vital for maintaining consistent fuel pressure, which is crucial for engine performance under various operating conditions.

Overall, the part 3925379 Hexagon Flange Head Cap Screw is a fundamental component in ensuring the secure and reliable operation of various engine systems.

Conclusion

The 3925379 Hexagon Flange Head Cap Screw is a vital component in the maintenance and operation of commercial trucks and Cummins engines. Its robust design, high-strength materials, and flange head provide secure fastening, improved load distribution, and resistance to corrosion. Proper installation, regular maintenance, and adherence to safety practices ensure the longevity and reliability of this part in heavy-duty applications.