3928309
Socket Head Cap Screw
Cummins®

The Socket Head Cap Screw, Part #3928309, manufactured by Cummins, is a specialized fastener designed for use in commercial truck applications. Cummins, a well-established name in the commercial truck industry, produces this screw to meet the rigorous demands of heavy-duty truck operations. This part is integral to ensuring the structural integrity and operational efficiency of various truck components.

Basic Concepts of Socket Head Cap Screws

Socket Head Cap Screws are a type of fastener characterized by a hexagonal socket in the head, allowing for efficient tightening and loosening with a hex key. These screws are widely used in the automotive industry due to their strength, precision fit, and ease of use. Mechanically, they function by converting torque applied to the socket into clamping force, securing components together firmly ¹.

Purpose of the 3928309 Socket Head Cap Screw in Truck Operations

This Cummins part plays a specific role in the operation and maintenance of commercial trucks. It is utilized in areas where high strength and precision are required, such as in the assembly of engine components, transmission systems, and chassis parts. Its design ensures a secure fit that can withstand the vibrations and stresses encountered in truck operations.

Key Features

This part is crafted from high-quality materials, typically alloy steel, which provides excellent strength and durability. Its design includes a fully threaded shank and a countersunk head that allows for flush mounting. These attributes contribute to its performance and longevity in demanding truck applications.

Benefits

Using the 3928309 Socket Head Cap Screw in truck assemblies offers several advantages. Its robust material composition and precise design enhance reliability and reduce the likelihood of failure. The screw’s ease of installation, facilitated by its hexagonal socket, allows for quick and efficient assembly. Additionally, its resistance to wear and corrosion ensures longevity, even in harsh operating conditions.

Installation and Usage

Proper installation of the 3928309 Socket Head Cap Screw is crucial for optimal performance. It should be installed using the correct torque specifications to ensure the appropriate clamping force without over-tightening, which could damage the screw or the components being fastened. Best practices include using a torque wrench for accurate application and periodically checking the screw’s tightness during maintenance intervals ².

Troubleshooting and Maintenance

Common issues with Socket Head Cap Screws, such as loosening or corrosion, can be addressed through regular inspection and maintenance. If a screw shows signs of wear or loosening, it should be tightened or replaced as necessary. Applying a corrosion-resistant coating can help protect the screw from environmental factors, prolonging its lifespan.

Cummins: Manufacturer Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and quality, Cummins has established a strong reputation in the commercial truck industry. The company’s extensive product range and commitment to excellence make it a preferred manufacturer for critical truck components, including the 3928309 Socket Head Cap Screw.

Socket Head Cap Screw 3928309 in Cummins Engines

The Socket Head Cap Screw 3928309, manufactured by Cummins, is a critical component in several of their engine models. This part is integral to the assembly and maintenance of the engines, ensuring secure fastening of various parts. Here is how it fits into the specified Cummins engines:

15N CM2380 M104B, C GAS PLUS CM556

In the 15N CM2380 M104B, C GAS PLUS CM556 engine, the Socket Head Cap Screw 3928309 is used to secure several key components. It plays a vital role in maintaining the integrity of the engine’s structure by fastening parts that are subject to high stress and vibration.

C8.3 G, ISB5.9G CM2180, ISB6.7 G CM2180 B118, ISL G CM2180, ISX12 G CM2180 EJ, L GAS PLUS CM556

For the C8.3 G, ISB5.9G CM2180, ISB6.7 G CM2180 B118, ISL G CM2180, ISX12 G CM2180 EJ, and L GAS PLUS CM556 engines, the Socket Head Cap Screw 3928309 is employed in a variety of applications. These engines, known for their robust performance, require reliable fastening solutions to ensure longevity and efficiency. The screw is used to secure components such as the cylinder head, engine block, and other critical assemblies.

QSK19G

In the QSK19G engine, the Socket Head Cap Screw 3928309 is utilized to fasten parts that are integral to the engine’s operation. This includes securing the engine block and other heavy-duty components, ensuring that the engine maintains its structural integrity under high-load conditions.

Each of these engines benefits from the use of the Socket Head Cap Screw 3928309, which provides the necessary strength and reliability to withstand the demanding conditions these engines operate under.

Role of Part 3928309 Socket Head Cap Screw in Engine Systems

The part 3928309 Socket Head Cap Screw is integral in securing various components within engine systems, ensuring optimal performance and safety.

Air Fuel Mixer

In the air fuel mixer, the Socket Head Cap Screw is used to fasten the mixer housing to the engine block. This secure attachment ensures that the mixer operates within precise tolerances, allowing for accurate air-fuel ratio management. Proper fastening prevents vibrations that could lead to misalignment and inefficient combustion.

Fuel Control

For the fuel control unit, the Socket Head Cap Screw plays a role in mounting the control unit to the engine frame. This secure attachment is vital for maintaining the unit’s position relative to the fuel lines and injectors, ensuring consistent fuel delivery and pressure regulation.

Fuel Control Module

Within the fuel control module, the Socket Head Cap Screw is employed to attach the module’s casing. This ensures that the electronic components inside are protected from environmental factors and mechanical stress, contributing to the module’s reliability and longevity.

Fuel Valve Control Module

In the fuel valve control module, the Socket Head Cap Screw is used to secure the valve housing. This attachment is essential for maintaining the integrity of the fuel valve’s operation, ensuring that it opens and closes as required without leakage or malfunction.

Mass Flow Sensor

The mass flow sensor relies on the Socket Head Cap Screw to attach the sensor housing to the intake tract. This secure fit is necessary for accurate air mass measurement, which is critical for the engine control unit (ECU) to make precise fuel injection adjustments.

Spark Plug Cup Installer

During the installation of spark plugs, the Socket Head Cap Screw is used in the spark plug cup installer tool to ensure that the cups are tightly secured in place. This prevents any potential gas leaks around the spark plugs and ensures that the plugs are correctly positioned for optimal ignition performance.

Conclusion

The 3928309 Socket Head Cap Screw by Cummins is a critical component in the assembly and maintenance of commercial truck engines. Its robust design, ease of installation, and resistance to wear and corrosion make it an essential part for ensuring the structural integrity and operational efficiency of various engine components. Proper installation and maintenance of this part are crucial for the longevity and performance of truck engines.