3925883
Hexagon Flange Head Cap Screw
Cummins®

This article provides an overview of the Hexagon Flange Head Cap Screw, part number 3925883, manufactured by Cummins. It covers the basic concepts, purpose, key features, benefits, and maintenance suggestions for this component, which is used in commercial trucks.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by a hexagonal head and a flanged base. The hexagonal head allows for easy tightening and loosening using a wrench or socket, while the flange provides additional surface area for distribution of clamping force. These screws are commonly used in applications requiring secure and durable fastening ¹.

Purpose and Function

The 3925883 Hexagon Flange Head Cap Screw by Cummins is designed for use in commercial trucks. It plays a role in securing various components and assemblies within the truck’s structure. By providing a strong and reliable fastening solution, it helps ensure the integrity and safety of the truck’s construction ².

Key Features

• Hexagonal head for easy tool engagement.
• Flanged base for enhanced clamping force distribution.
• High-strength material construction for durability.
• Corrosion-resistant coating to prevent rust and extend service life.
• Designed to meet or exceed industry standards for commercial truck applications.

Benefits

• Reliable fastening solution for critical truck components.
• Enhanced durability and resistance to wear and tear.
• Improved safety through secure component attachment.
• Easy installation and removal using standard tools.
• Long-lasting performance in demanding commercial truck environments.

Troubleshooting and Maintenance

Regular inspection of Hexagon Flange Head Cap Screws is recommended to ensure they remain tight and free of corrosion. If signs of wear, loosening, or corrosion are detected, the screws should be tightened or replaced as necessary. Using the correct torque specifications during installation helps prevent over-tightening or under-tightening, which can lead to failure ¹.

Cummins Engine Part 3925883: Hexagon Flange Head Cap Screw

The Cummins part number 3925883, a Hexagon Flange Head Cap Screw, is a critical component used across a variety of Cummins engines. This part is integral to the assembly and maintenance of several engine models, ensuring secure fastening and structural integrity.

Engine Models Utilizing Part 3925883

15N CM2380 M104B, 4B3.9, 6B5.9, 6C8.3, A1400, A1700, A2000, A2300

These engines, which include the 15N CM2380 M104B and the 4B3.9, benefit from the use of the Hexagon Flange Head Cap Screw in various applications. The screw’s design allows for a tight and reliable connection, which is essential for maintaining the structural integrity of engine components.

B3.3, B3.9 G, B4.5, B4.5 CM2350 B129B, B4.5 RGT, B5.9 CM2670 B166C, B5.9 G, B5.9 GAS PLUS CM556

The engines in this group, such as the B3.3 and B4.5, rely on the Hexagon Flange Head Cap Screw for fastening various parts. The screw’s flange head provides a large bearing surface, which is crucial for distributing the load evenly and preventing damage to the engine components.

B6.7 CM2350 B135B, B6.7 CM2670 B153B, B6.7 CM2670 B164C, B6.7 G CMOH6.0 B125, B6.7S, C GAS PLUS CM556

Engines like the B6.7 CM2350 B135B and B6.7 CM2670 B164C utilize the Hexagon Flange Head Cap Screw in several critical applications. The screw’s design ensures that components are held firmly in place, which is vital for the engine’s performance and longevity.

D4.0 CM2620 D103B, F3.8 CM2350 F120B

The D4.0 CM2620 D103B and F3.8 CM2350 F120B engines also incorporate the Hexagon Flange Head Cap Screw in their design. The screw’s ability to provide a secure fastening is essential for these engines, ensuring that all parts remain properly aligned and secured during operation.

The Hexagon Flange Head Cap Screw is a versatile and essential component in the maintenance and assembly of Cummins engines. Its design and functionality make it suitable for a wide range of engine models, ensuring that each engine operates efficiently and reliably ².

Hexagon Flange Head Cap Screw (Part 3925883) Component Usage

The Hexagon Flange Head Cap Screw, part 3925883, is integral to the assembly and securement of various engine components. Its robust design ensures reliable fastening in high-stress environments.

Air Intake and Transfer Connections

In the air intake connection, the Hexagon Flange Head Cap Screw secures the intake manifold to the engine block, ensuring a tight seal that prevents air leaks. Similarly, in the air transfer connection, it fastens components that route air between different parts of the engine, maintaining efficient airflow.

Alternator Drive and Auxiliary Systems

For the alternator drive, this screw is used to attach the alternator to the engine, ensuring stable operation and consistent power output. In the auxiliary cooling system and auxiliary pump plumbing, it secures components that manage coolant flow, contributing to effective thermal management.

Corrosion Resistor and Cooling Systems

The corrosion resistor, often part of the cooling system, relies on the Hexagon Flange Head Cap Screw to maintain its position and functionality. In the engine oil cooler, marine gear oil cooler, and torque converter cooler, these screws ensure that the cooling components are firmly attached, promoting optimal heat dissipation.

Gear Covers and Housings

In the front gear cover and front gear housing, the screw plays a role in securing these components, which protect internal gears and maintain alignment. This is vital for the smooth operation of the engine’s gear system.

Fuel System Components

For the fuel pump coupling and injector, the Hexagon Flange Head Cap Screw ensures these components are securely fastened, which is essential for precise fuel delivery and combustion efficiency. The lift pump also benefits from secure fastening to maintain consistent fuel pressure.

Oil Management and Heat Shields

In the oil fill arrangement and oil suction connection, these screws help in maintaining the integrity of the oil system, ensuring no leaks occur. The heat shield, which protects nearby components from excessive heat, is also secured using these screws, enhancing the durability and safety of the engine.

Power Takeoff and Pressure Regulation

The power takeoff flange and rear power take-off replacer use these screws to ensure a solid connection, which is necessary for transmitting power efficiently. The pressure regulator valve, critical for maintaining consistent pressure within the engine, is also secured using these screws.

Turbocharger and Water Inlet

Lastly, in the turbocharger and water inlet connection, the Hexagon Flange Head Cap Screw ensures these components are tightly secured. This is important for the turbocharger’s efficient operation and for maintaining a sealed water inlet, which is essential for coolant system integrity.

Conclusion

The Hexagon Flange Head Cap Screw, part number 3925883, is a critical component in the assembly and maintenance of Cummins engines. Its robust design and versatile applications ensure reliable fastening and structural integrity across various engine models. Regular maintenance and proper installation are essential to maximize the performance and longevity of this part.