3899390
Socket Head Cap Screw
Cummins®

The Socket Head Cap Screw 3899390, manufactured by Cummins, is a specialized fastener designed for use in commercial trucks. Cummins, a well-established name in the automotive industry, produces this screw to meet the demanding requirements of heavy-duty applications. This screw is integral to various mechanical assemblies within commercial trucks, ensuring secure and reliable fastening solutions.

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 and secure tightening using a hex key. These screws are commonly used in mechanical assemblies where high strength and resistance to loosening are required. They function by providing a strong, permanent connection between components, distributing load evenly across the joint ¹.

Purpose of the 3899390 Socket Head Cap Screw in Truck Operations

The 3899390 Socket Head Cap Screw plays a specific role in the operation and maintenance of commercial trucks. It is designed to secure critical components within the truck’s engine and chassis, ensuring that parts remain firmly in place under various operating conditions. This screw is particularly important in applications where vibrations and dynamic loads are common, as it helps maintain the integrity of the assembly ².

Key Features of the 3899390 Socket Head Cap Screw

The 3899390 Socket Head Cap Screw is engineered with several design elements and material properties that make it suitable for heavy-duty applications. It is constructed from high-strength alloy steel, providing excellent tensile strength and resistance to wear. The screw features a precision-machined hexagonal socket for reliable torque application and a fully threaded design for versatile use in different applications ³.

Benefits of Using the 3899390 Socket Head Cap Screw

The 3899390 Socket Head Cap Screw offers several advantages for commercial truck applications. Its high-strength material ensures durability under heavy loads, while the precision-machined socket allows for easy and accurate installation. Additionally, the screw’s resistance to wear and corrosion enhances its longevity, reducing the need for frequent replacements and maintenance.

Installation and Usage Guidelines

Proper installation of the 3899390 Socket Head Cap Screw involves several steps to ensure a secure and lasting connection. Begin by selecting the appropriate hex key for the screw size. Insert the hex key into the socket and align the screw with the designated hole. Apply steady, even torque to tighten the screw, ensuring it is snug but not overtightened to avoid damage. Use a torque wrench for precise torque application if available.

Troubleshooting Common Issues

Typical problems with Socket Head Cap Screws may include loosening due to vibrations, corrosion, or improper installation. To address these issues, regularly inspect screws for signs of wear or corrosion. If a screw appears loose, remove it and clean the mating surfaces before reinstallation. Applying a thread locker can help prevent loosening in high-vibration environments. For corroded screws, replacement may be necessary to ensure structural integrity.

Maintenance Tips

Regular inspection and maintenance of the 3899390 Socket Head Cap Screw are vital to ensure its longevity and performance. Inspect screws during routine maintenance checks for signs of wear, corrosion, or loosening. Clean and lubricate screws as needed to prevent seizing and ensure smooth operation. Replace any damaged or worn screws promptly to maintain the integrity of the assembly.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins is committed to quality, innovation, and customer satisfaction. The company’s extensive product range includes engines, powertrains, and related components for various industries, including commercial trucking, construction, and agriculture. Cummins’ dedication to excellence and technological advancement makes it a trusted name in the automotive industry.

Socket Head Cap Screw 3899390 in Cummins Engines

The Socket Head Cap Screw 3899390 is a critical component in several Cummins engine models, ensuring secure fastening and structural integrity. This part is integral to the assembly and maintenance of the following engines:

M11 Series

• M11 CELECT PLUS
• M11 MECHANICAL

In the M11 series, the Socket Head Cap Screw 3899390 is used in various applications to maintain the alignment and stability of engine components. Its design allows for precise torque application, which is essential for the high-performance demands of these engines.

QSK Series

• QSK45 CM500
• QSK60 CM500
• QSK60 CM850 MCRS

The QSK series engines, including the QSK45 CM500, QSK60 CM500, and QSK60 CM850 MCRS, utilize the Socket Head Cap Screw 3899390 in several key areas. These screws are crucial for securing engine mounts, brackets, and other critical components, ensuring that the engine operates smoothly and efficiently under various conditions.

QSM and QST Series

• QSM11 CM570
• QST30 CM2350 T101
• QST30 CM552

In the QSM11 CM570, QST30 CM2350 T101, and QST30 CM552 engines, the Socket Head Cap Screw 3899390 is used to fasten components that require high precision and durability. These engines, known for their robust performance, depend on this screw to maintain the integrity of their assemblies, ensuring longevity and reliability in demanding applications.

Part 3899390 Socket Head Cap Screw Component Usage

The part 3899390 Socket Head Cap Screw is integral in securing various components within engine systems, ensuring stability and proper function.

In the drive system, this screw is utilized to fasten components that require a robust and secure connection, contributing to the overall efficiency and reliability of the drive mechanism.

For the fan and fan top-level assembly clutch, the Socket Head Cap Screw plays a significant role in maintaining the alignment and integrity of these assemblies. It ensures that the fan operates smoothly and efficiently, which is essential for proper engine cooling.

In the context of filters, specifically the fuel filter, full flow oil filter, and lubricating oil filter, this screw is employed to secure filter housings and adapter kits. It ensures that the filters are correctly installed and sealed, which is vital for the filtration process and the protection of engine components.

The filter head adapter kit and lube oil filter head also benefit from the use of this screw. It provides a secure attachment point for these components, ensuring that they remain in place under operating conditions.

Additionally, in the lubricating oil filter head, the Socket Head Cap Screw is used to fasten the filter head to the engine block or filter housing, ensuring a leak-free connection and maintaining the integrity of the lubrication system.

Lastly, in the oil transfer connection, this screw is crucial for securing connections that facilitate the transfer of oil within the engine system. It ensures that these connections are tight and secure, preventing leaks and ensuring efficient oil flow.

Conclusion

The 3899390 Socket Head Cap Screw is a vital component in the maintenance and operation of commercial trucks, particularly in Cummins engines. Its high-strength material, precision-machined design, and resistance to wear and corrosion make it an ideal choice for heavy-duty applications. Proper installation, regular maintenance, and timely replacement of this screw are essential to ensure the longevity and reliability of the truck’s engine and chassis components.