3925344
Hexagon Flange Head Cap Screw
Cummins®

Introduction

This article provides an in-depth overview of the Hexagon Flange Head Cap Screw (Part #3925344) manufactured by Cummins. It covers the basic concepts, purpose, key features, benefits, and maintenance suggestions for this component, which is essential in commercial trucks.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by a hexagonal head and a flange that provides additional surface area for torque application. This design allows for secure fastening and resistance to loosening. The screw is commonly used in applications requiring high strength and durability ¹.

Purpose and Function

The 3925344 Hexagon Flange Head Cap Screw by Cummins is designed for use in commercial trucks. It plays a critical role in securing various components and assemblies within the truck’s structure. The screw ensures that parts remain firmly attached, contributing to the overall integrity and safety of the vehicle ².

Key Features

• Hexagonal head for easy tightening and loosening with standard tools.
• Flange provides additional torque application surface, enhancing fastening security.
• High-strength material construction to withstand significant loads and stresses.
• Designed for durability in harsh operating environments typical of commercial trucks.

Benefits

• Enhanced fastening security due to the flange design.
• Resistance to loosening under vibration and dynamic loads.
• High strength and durability, suitable for heavy-duty applications.
• Reliable performance in demanding commercial truck environments.

Troubleshooting and Maintenance

• Regular inspection for signs of wear, corrosion, or damage.
• Ensure proper torque is applied during installation to avoid over-tightening or under-tightening.
• Replace screws showing signs of fatigue or failure to maintain structural integrity.
• Use appropriate lubricants if specified by the manufacturer to facilitate easier maintenance and reduce wear.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. Known for its commitment to quality and innovation, Cummins provides reliable components for a wide range of industries, including commercial trucking ².

Cummins Engine Part 3925344: Hexagon Flange Head Cap Screw

The Cummins part number 3925344, a Hexagon Flange Head Cap Screw, is a critical component in the assembly and maintenance of several Cummins engine models. This part is designed to provide secure fastening in various engine applications, ensuring the integrity and functionality of the engine’s components.

Engine Models Compatible with Part 3925344

15N Series

• 15N CM2380 M104B

4B3.9 Series

• 4B3.9

6B5.9 Series

• 6B5.9

6C8.3 Series

• 6C8.3

A Series

• A1400
• A1700
• A2000
• A2300

B Series

• B3.3
• B4.5
• B4.5 RGT
• B5.9 CM2670 B166C
• B5.9 G
• B5.9 GAS PLUS CM556
• B6.7 CM2350 B135B
• B6.7 CM2670 B153B
• B6.7 CM2670 B164C
• B6.7 G CMOH6.0 B125

C Series

• C GAS PLUS CM556

D4.0 Series

• D4.0 CM2620 D103B

F3.8 Series

• F3.8 CM2350 F120B
• F3.8 CM2620 F137B

F4.5 Series

• F4.5 CM2620 F139B

G8.3 Series

• G8.3

The Hexagon Flange Head Cap Screw (part number 3925344) is integral to the assembly of these engines, providing a reliable fastening solution that ensures the secure attachment of various engine components. Its design allows for easy installation and removal, making it a preferred choice for both original equipment and aftermarket applications.

Role of Part 3925344 Hexagon Flange Head Cap Screw in Various Engine Systems

The 3925344 Hexagon Flange Head Cap Screw is a versatile fastener utilized across multiple engine systems to ensure secure and reliable connections. Its application spans a variety of components, contributing to the overall functionality and efficiency of the engine.

Air Compressor

In the air compressor system, the Hexagon Flange Head Cap Screw is employed to fasten critical components such as the compressor housing and mounting brackets. This ensures that the compressor operates under optimal conditions, maintaining the necessary pressure and airflow for efficient engine performance.

Air Heater Starting Aid

For the air heater starting aid, this screw plays a role in securing the heater elements and housing. Proper fastening is essential to prevent any leaks or malfunctions that could impede the engine’s starting process, especially in colder climates.

Air Transfer Connection

Within the air transfer connection system, the screw is used to secure fittings and hoses. This ensures a tight seal, preventing air leaks that could affect the engine’s air-fuel mixture and overall performance.

Alternator Mounting

The Hexagon Flange Head Cap Screw is crucial in the alternator mounting system, where it secures the alternator to the engine block. This ensures stable operation of the alternator, which is vital for maintaining the electrical system of the engine.

Auxiliary Cooling System

In the auxiliary cooling system, this screw is used to fasten radiator components and cooling fans. Secure mounting is necessary to ensure efficient heat dissipation, preventing engine overheating.

Cam Follower Cover

For the cam follower cover, the screw ensures that the cover is tightly secured, protecting the camshaft and followers from debris and ensuring smooth operation of the valve train.

Engine Control Module

In the engine control module (ECM) assembly, the screw is used to mount the ECM securely to its bracket. This is important for maintaining the integrity of the electrical connections and ensuring accurate engine control.

Engine Lubricating Primer

The screw is utilized in the engine lubricating primer system to secure the primer pump and its associated components. This ensures that the lubrication system functions correctly, providing essential oil flow to engine parts.

Engine Stand Mounting Kit

In the engine stand mounting kit, the screw is used to secure the engine to the stand. This is important for stability during maintenance or testing procedures.

Front Gear Train Accessory Mounting

For the front gear train accessory mounting, the screw ensures that accessories are firmly attached to the gear train. This is vital for the proper functioning of accessories like the alternator and power steering pump.

Fuel Filter

In the fuel filter system, the screw is used to secure the filter housing. This ensures that the filter remains in place and functions correctly, providing clean fuel to the engine.

Fuel Pump Drive

The screw is employed in the fuel pump drive system to secure the drive mechanism. This ensures that the fuel pump operates efficiently, delivering the necessary fuel pressure to the engine.

Gear Replacer

In the gear replacer system, the screw is used to secure the tool and its components. This ensures that the gear replacement process is carried out smoothly and accurately.

Kit, 50DN Service

For the 50DN service kit, the screw is used to secure various components within the kit. This ensures that all parts are correctly installed and function as intended during maintenance procedures.

Leak Test Kit

In the leak test kit, the screw is used to secure testing equipment and fittings. This ensures accurate and reliable leak detection, crucial for maintaining engine integrity.

Lubricating Oil Supply Tube

The screw is utilized in the lubricating oil supply tube system to secure connections and fittings. This ensures a consistent oil supply to critical engine components.

Oil Level Gauge

In the oil level gauge system, the screw is used to secure the gauge to its mounting point. This ensures accurate oil level readings, vital for engine health.

Radiator

For the radiator, the screw is used to secure the radiator to its mounting brackets. This ensures proper alignment and function, essential for effective cooling.

Rocker Lever

In the rocker lever system, the screw is used to secure the levers to the engine block. This ensures precise valve operation, contributing to engine efficiency.

Turbocharger

The screw is employed in the turbocharger system to secure the turbocharger to the engine. This ensures stable operation and optimal turbo performance.

Turbocharger Arrangement

In the turbocharger arrangement, the screw is used to secure various components of the turbocharger system. This ensures that all parts work in harmony, enhancing engine performance.

Turbocharger Plumbing

For the turbocharger plumbing, the screw is used to secure hoses and fittings. This ensures a leak-free system, maintaining the integrity of the turbocharger’s air supply.

Water Inlet Connection

In the water inlet connection system, the screw is used to secure the inlet to the engine block. This ensures a tight seal, preventing leaks and ensuring efficient coolant flow.

Water Pump

The screw is utilized in the water pump system to secure the pump to the engine. This ensures stable operation and effective coolant circulation.

Water Pump Drive

In the water pump drive system, the screw is used to secure the drive mechanism. This ensures that the water pump operates efficiently, maintaining the engine’s cooling system.

Conclusion

The 3925344 Hexagon Flange Head Cap Screw by Cummins is a vital component in the assembly and maintenance of commercial trucks and various Cummins engine models. Its robust design, high strength, and durability make it suitable for heavy-duty applications, ensuring secure fastening and reliable performance in demanding environments. Regular maintenance and proper installation are essential to maximize the lifespan and effectiveness of this critical fastener.