3901350
Socket Head Cap Screw
Cummins®

The 3901350 Socket Head Cap Screw is a component manufactured by Cummins, a well-established name in the commercial truck industry. This screw is designed for use in commercial trucks, where it contributes to the secure assembly of various parts and components.

Basic Concepts of Socket Head Cap Screws

A Socket Head Cap Screw is a type of fastener characterized by a hexagonal socket in the head, allowing it to be driven using a hex key. These screws are commonly used in mechanical assemblies to secure components due to their strength and the ease with which they can be installed and removed. The design of the head provides a larger bearing surface compared to traditional hex bolts, which can distribute the load more effectively and reduce the risk of stripping ¹.

Purpose of the 3901350 Socket Head Cap Screw in Truck Operations

In the context of commercial trucks, the 3901350 Socket Head Cap Screw plays a role in securing various components, particularly within the truck’s structure or engine components. Its application ensures that parts remain firmly in place under the dynamic and often strenuous conditions encountered in heavy-duty truck operations.

Key Features

The 3901350 Socket Head Cap Screw is crafted from materials that offer a balance of strength and durability. It features a specific thread type that provides secure fastening, and its head design allows for efficient torque application using a hex key. Additionally, the screw may have special coatings or treatments that enhance its performance, such as corrosion resistance, which is vital for components exposed to the elements ².

Benefits

Using the 3901350 Socket Head Cap Screw offers several advantages. Its material composition and design contribute to improved strength and durability. The screw’s resistance to corrosion ensures longevity, even in harsh environments. The ease of installation with a hex key and the reliability it offers in high-stress applications make it a valuable component in the maintenance and operation of commercial trucks.

Installation Considerations

Proper installation of the 3901350 Socket Head Cap Screw involves adhering to torque specifications to ensure a secure and lasting fastening. The use of recommended tools, such as a torque wrench, is advised to apply the correct amount of force. Best practices include checking for proper alignment and ensuring that the screw is not overtightened, which could lead to damage or failure ³.

Troubleshooting and Maintenance

Common issues with Socket Head Cap Screws, such as loosening or corrosion, can be addressed through regular inspection and maintenance. Ensuring that screws are tightened to the manufacturer’s specifications and applying protective coatings where necessary can prolong the lifespan of the screw and maintain reliable performance.

Cummins: Manufacturer Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions. With a history of innovation and quality, Cummins has established a strong reputation in the commercial truck industry. The company’s commitment to excellence is reflected in its product range, which includes components like the 3901350 Socket Head Cap Screw, designed to meet the demanding requirements of heavy-duty applications.

Cummins Socket Head Cap Screw 3901350 Compatibility

The Cummins Socket Head Cap Screw part number 3901350 is a versatile component designed to fit a variety of Cummins engines. This part is engineered to provide secure fastening in various applications across different engine models. Below is a detailed description of its compatibility with the listed engines:

Cummins 4B3.9 and 6B5.9 Engines

The 3901350 screw is compatible with the 4B3.9 and 6B5.9 engines, ensuring a reliable connection in the engine’s assembly. These engines are known for their robust performance and are often used in heavy-duty applications.

Cummins B3.9 G and B4.5 Engines

This screw fits seamlessly with the B3.9 G and B4.5 engines, providing the necessary strength and durability for these models. These engines are typically used in various industrial and commercial applications.

Cummins G855 and QSB3.9 30 CM550 Engines

The 3901350 screw is also suitable for the G855 and QSB3.9 30 CM550 engines. These engines are designed for high-performance and are often found in agricultural and construction machinery.

Cummins ISC CM554 and ISC CM850 Engines

For the ISC CM554 and ISC CM850 engines, the 3901350 screw offers a precise fit, ensuring that the engine components remain securely fastened. These engines are widely used in heavy-duty trucks and industrial applications.

Cummins ISL CM554 and ISL9 CM2150 SN Engines

The 3901350 screw is compatible with the ISL CM554 and ISL9 CM2150 SN engines, providing the necessary fastening for these high-performance engines. These engines are often used in on-highway and vocational applications.

Cummins ISX CM871 and QSB5.9 CM850 Engines

This screw fits the ISX CM871 and QSB5.9 CM850 engines, ensuring that the engine’s components are held together securely. These engines are known for their durability and are used in various heavy-duty applications.

Cummins ISX15 CM2250 and ISX15 CM2250 SN Engines

The 3901350 screw is also compatible with the ISX15 CM2250 and ISX15 CM2250 SN engines, providing a reliable fastening solution. These engines are designed for high-performance and are often used in heavy-duty trucks.

Cummins ISX15 CM2350 X101 and QSK19 CM2350 K105 Engines

This screw fits the ISX15 CM2350 X101 and QSK19 CM2350 K105 engines, ensuring secure fastening in these high-performance engines. These engines are known for their power and are used in various heavy-duty applications.

Cummins QSK60 CM850 MCRS and QSL9 G CM558 Engines

The 3901350 screw is compatible with the QSK60 CM850 MCRS and QSL9 G CM558 engines, providing the necessary strength and durability for these models. These engines are often used in marine and power generation applications.

Cummins QSX15 CM2250, QSX15 CM2250 ECF, and QSX15 CM2350 X105 Engines

This screw fits the QSX15 CM2250, QSX15 CM2250 ECF, and QSX15 CM2350 X105 engines, ensuring that the engine components remain securely fastened. These engines are designed for high-performance and are often used in heavy-duty trucks.

Cummins X15 CM2350 X116B, X15 CM2350 X123B, and X15 CM2450 X134B Engines

The 3901350 screw is compatible with the X15 CM2350 X116B, X15 CM2350 X123B, and X15 CM2450 X134B engines, providing a reliable fastening solution for these high-performance engines. These engines are often used in heavy-duty applications.

Role of Part 3901350 Socket Head Cap Screw in Engine Systems

The part 3901350 Socket Head Cap Screw is integral to the assembly and securement of various components within engine systems. Its application spans across multiple critical areas, ensuring the structural integrity and operational efficiency of the engine.

Aftercooler and Aftercooler Conversion Kit

In the aftercooler system, the Socket Head Cap Screw is used to fasten the aftercooler to its mounting brackets. This securement is vital for maintaining the alignment and stability of the aftercooler, which is responsible for cooling the compressed air from the turbocharger before it enters the engine cylinders. In the aftercooler conversion kit, these screws ensure that all new components are firmly attached, facilitating efficient heat exchange and contributing to the overall performance of the engine.

Crankcase Breather Arrangement

For the crankcase breather arrangement, the Socket Head Cap Screw plays a role in attaching the breather housing to the engine block. This connection is essential for managing crankcase pressure and ensuring that any blow-by gases are effectively vented, preventing oil contamination and maintaining engine health.

Engine Balancer

In the engine balancer system, these screws are employed to secure the balancer to the crankshaft or engine block. Proper attachment is necessary to ensure the balancer operates correctly, reducing vibrations and enhancing the smoothness of engine operation.

Engine Control Module (ECM) and Engine Monitoring System

When installing the Engine Control Module and Engine Monitoring System, the Socket Head Cap Screw is used to mount these electronic components securely. This ensures that the modules remain stable and are not affected by vibrations, which could lead to malfunctions in engine control and monitoring.

Exhaust Outlet Connection

For the exhaust outlet connection, these screws are utilized to fasten the exhaust manifold to the engine block or cylinder head. This securement is crucial for maintaining a sealed connection, preventing exhaust leaks, and ensuring efficient exhaust flow.

Fan Drive and Fuel Pump

In the fan drive system, the Socket Head Cap Screw is used to attach the fan to the drive mechanism, ensuring efficient cooling of the engine. Similarly, in the fuel pump and fuel pump body, these screws secure the pump to its housing, guaranteeing a stable and leak-free connection essential for consistent fuel delivery.

Raw Water Pump and Refrigerant Compressor

For the raw water pump and refrigerant compressor, the screws are used to fasten these components to their respective mounting points. This securement is vital for the operational stability of these pumps, ensuring efficient cooling and refrigeration processes.

Turbocharger Arrangement and Location

In the turbocharger arrangement, the Socket Head Cap Screw is used to attach the turbocharger to the engine and exhaust system. This securement is essential for maintaining the turbocharger’s position and ensuring it operates within specified parameters for optimal performance.

Valve Spring Compressor

The valve spring compressor utilizes these screws to secure the compressor to the cylinder head, allowing for the safe compression and release of valve springs during maintenance procedures.

XPI JV Components and System

In the XPI JV system, particularly for Cummins HD engines, the Socket Head Cap Screw is used to fasten various components, ensuring the integrity of the fuel injection system. This securement is critical for maintaining precise fuel delivery and engine performance.

Conclusion

Overall, the part 3901350 Socket Head Cap Screw is a versatile fastener that plays a significant role in the securement and operational efficiency of numerous engine components. Its robust design, ease of installation, and compatibility with a wide range of Cummins engines make it an essential component in the maintenance and operation of commercial trucks.