3925393
Hexagon Flange Head Cap Screw
Cummins®

The Cummins Hexagon Flange Head Cap Screw, part number 3925393, is a critical component in commercial trucks. This screw is engineered to withstand the demanding conditions of heavy-duty applications, ensuring reliable performance and durability. Its primary function is to securely fasten various components within the truck, contributing to the overall structural integrity and operational efficiency of the vehicle.

Basic Concepts and Functionality

The 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 the distribution of clamping force. This design ensures that the screw can effectively fasten components together, maintaining structural integrity under significant stress and vibration, which are common in truck mechanics ¹.

Purpose and Role in Truck Operation

This Cummins part plays a specific role in the operation of a truck by securing critical components and supporting various systems. It is commonly used to fasten engine components, chassis parts, and other structural elements that require robust and reliable fastening solutions. By ensuring these components remain securely in place, the screw contributes to the safe and efficient operation of the truck ².

Key Features

The 3925393 boasts several key features that enhance its effectiveness and durability. Its hexagonal head design allows for easy and precise torque application, reducing the risk of stripping or rounding during installation. The flange characteristic provides additional bearing surface, which helps in distributing the clamping force more evenly. Additionally, the screw is made from high-quality materials that offer excellent resistance to corrosion and wear, ensuring long-lasting performance in demanding environments.

Benefits

Using the 3925393 offers several benefits. Its design provides enhanced fastening strength, making it capable of withstanding high levels of stress and vibration commonly encountered in truck operations. The screw’s resistance to corrosion ensures longevity, even in harsh environments. Furthermore, the ease of installation and removal, thanks to its hexagonal head, allows for efficient maintenance and repair processes.

Installation and Usage Guidelines

Proper installation of the 3925393 is crucial for ensuring its effectiveness. Begin by aligning the screw with the designated hole and insert it until the flange contacts the surface. Use a torque wrench to apply the recommended torque setting, ensuring the screw is tightened to the manufacturer’s specifications. It is important to verify that the screw is properly seated and aligned to avoid any potential issues during operation.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws include loosening due to vibration, corrosion, and wear. To troubleshoot these issues, regularly inspect the screws for signs of loosening or damage. If corrosion is present, consider replacing the screw to prevent further degradation. Maintenance tips include applying a thread locker to prevent loosening and ensuring that all screws are torqued to the correct specifications during installation. Regular inspections will help identify any screws that need replacement, ensuring the continued reliability of the truck.

Cummins: Manufacturer Overview

Cummins Inc. is a renowned manufacturer in the commercial truck industry, with a rich history of innovation and quality. Established in 1919, Cummins has built a reputation for producing reliable and high-performance engine and power generation equipment. The company’s commitment to quality is evident in its rigorous testing and manufacturing processes, ensuring that all components, including the 3925393, meet the highest standards of durability and performance.

Applications and Use Cases

The 3925393 is employed in various truck models and systems. It is commonly used in fastening engine components, such as cylinder heads and valve covers, as well as in securing chassis parts and other structural elements. This screw is particularly valuable in applications where high clamping force and resistance to vibration are required, making it a versatile component in the maintenance and repair of commercial trucks.

Cummins Engine Compatibility with Hexagon Flange Head Cap Screw 3925393

This Cummins part is designed to fit a variety of Cummins engines. This screw is integral for securing various components within the engine assembly, ensuring structural integrity and proper function. Below is a detailed breakdown of the compatibility of this screw with the listed engines:

Cummins 6-Cylinder Engines

• 6B5.9
• 6C8.3
• ISBE CM800
• ISBE4 CM850
• ISC CM554
• ISC CM850
• ISC CM850
• ISL CM554
• ISL9 CM2150 SN
• ISX15 CM2250
• QSC8.3 CM554
• QSC8.3 CM850 (CM2850)
• QSC9 CM2250/QSL9 CM2250
• QSL8.9 CM2150 L141
• QSL9 CM2250
• QSL9 CM2350 L102
• QSL9 CM850 (CM2850)

Cummins 4-Cylinder Engines

• 4B3.9
• ISB/ISD6.7 CM2150 SN
• L8.9
• QSB6.7 CM2250

Application Context

The Hexagon Flange Head Cap Screw 3925393 is typically used in applications where a secure and reliable fastening method is required. This screw is often employed in engine assemblies to fasten components such as covers, housings, and brackets, ensuring that these parts remain firmly in place under operational stresses. The screw’s design, featuring a hexagonal head and flange, provides a larger surface area for torque application, enhancing its effectiveness in high-stress environments.

Grouping by Engine Series

ISB/ISD Series

• ISB/ISD6.7 CM2150 SN

QSB Series

• QSB6.7 CM2250

L Series

• L8.9

QSC Series

• QSC8.3 CM554
• QSC8.3 CM850 (CM2850)
• QSC9 CM2250/QSL9 CM2250

QSL Series

• QSL8.9 CM2150 L141
• QSL9 CM2250
• QSL9 CM2350 L102
• QSL9 CM850 (CM2850)

ISC/ISL Series

• ISC CM554
• ISC CM850
• ISC CM850
• ISL CM554
• ISL9 CM2150 SN

ISBE Series

• ISBE CM800
• ISBE4 CM850

ISX Series

• ISX15 CM2250

Conclusion

The Cummins Hexagon Flange Head Cap Screw 3925393 is a versatile component suitable for a wide range of Cummins engines. Its application spans across various engine series, ensuring compatibility and reliability in securing critical engine components.

Hexagon Flange Head Cap Screw (Part 3925393) Usage in Engine Systems

The Hexagon Flange Head Cap Screw (Part 3925393) is a versatile fastener utilized across various components within engine systems to ensure secure and reliable connections. Its application spans multiple areas, contributing to the overall functionality and performance of the engine.

Air Systems

In the Air Heater Starting system, this screw is employed to attach the heater to the engine block, ensuring a stable and heat-resistant connection. Similarly, within the Air Intake Heater and Air Intake Manifold, it secures components that are essential for optimal air-fuel mixture and engine performance.

Electrical and Fuel Systems

For the Electrical Mounting of various sensors and components, the Hexagon Flange Head Cap Screw provides a robust attachment point. In the Fuel Line Bracket Kit and Fuel Valve Mounting, it ensures that fuel lines and valves are firmly in place, preventing leaks and ensuring consistent fuel delivery.

Injection and Control Systems

The screw plays a significant role in the Injector system by securing injectors to the engine block or manifold, which is vital for precise fuel injection. In the Engine Control Module (ECM), it is used to mount the module securely, ensuring it remains in place and functions correctly under various engine conditions.

Performance and Plumbing

In Performance Parts, such as the Charge Air Bypass and Plumbing Components, the screw ensures that all connections are tight and secure, which is essential for maintaining the integrity of the air and fuel systems. It is also used in the Solenoid Kit to attach solenoids, which control various engine functions.

Starting and Throttle Systems

Within the Starting Aid Kit and Throttle Kit, the screw secures components that are critical for engine start-up and throttle control. It ensures that these components remain in place and function correctly during engine operation.

Valve and Vent Systems

For the Fuel Shutoff Valve and Engine Coolant Vent, the screw provides a secure attachment, ensuring that these components operate efficiently and safely. This is particularly important for maintaining the engine’s cooling system and fuel management.

Overall, the Hexagon Flange Head Cap Screw (Part 3925393) is an essential component in various engine systems, providing the necessary secure connections that contribute to the engine’s reliability and performance.