3907049
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3907049, is a specialized fastener produced by Cummins. This screw is integral to the assembly and maintenance of commercial trucks, providing secure fastening in various applications. Cummins, a renowned manufacturer in the automotive industry, ensures that this component meets high standards of quality and performance ¹.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of bolt characterized by its hexagonal head and flanged base. The hexagonal head allows for efficient torque application using standard tools, while the flange provides additional surface area to distribute load and prevent the screw from sinking into soft materials. In fastening applications, this screw plays a role by securely joining components together, ensuring structural integrity and functionality ².

Purpose and Role in Truck Operation

The 3907049 Hexagon Flange Head Cap Screw serves specific purposes in commercial trucks. It is commonly used in applications where high tensile strength and resistance to loosening are required. This screw helps maintain the structural integrity of truck components by providing a secure and stable connection. Its applications range from fastening engine components to securing chassis parts, contributing to the overall reliability and performance of the vehicle ³.

Key Features

The 3907049 Hexagon Flange Head Cap Screw boasts several key features that enhance its performance and reliability. Its hexagonal head design allows for easy and precise torque application, while the flange provides additional stability and load distribution. The screw is typically made from high-strength materials, ensuring durability and resistance to wear. Additionally, its design includes features that prevent loosening, such as a flange that resists rotation and a threaded shank that provides a strong grip.

Benefits

The 3907049 Hexagon Flange Head Cap Screw offers several benefits in commercial truck applications. Its design contributes to improved fastening strength, making it suitable for high-stress environments. The screw’s resistance to loosening ensures that connections remain secure over time, reducing the need for frequent maintenance. Enhanced durability is another advantage, as the screw is built to withstand the rigors of truck operation. Additionally, its compatibility with various truck components makes it a versatile choice for different fastening needs.

Installation Guidelines

Proper installation of the 3907049 Hexagon Flange Head Cap Screw is vital to ensure secure and reliable fastening. Begin by selecting the appropriate tool, such as a torque wrench, to apply the correct amount of torque. Clean the fastening area to remove any debris or contaminants that could affect the screw’s performance. Insert the screw into the designated hole and use the torque wrench to tighten it to the specified torque value. It is important to follow the manufacturer’s guidelines for torque specifications to avoid over-tightening or under-tightening, which could compromise the fastening integrity.

Troubleshooting and Maintenance

Common issues with the 3907049 Hexagon Flange Head Cap Screw may include loosening, corrosion, or damage. To address these issues, regularly inspect the screw and its surrounding area for signs of wear or damage. If loosening is detected, re-tighten the screw to the specified torque value. In cases of corrosion, clean the affected area and apply a corrosion-resistant coating to prevent further degradation. If the screw is damaged, replace it with a new one to maintain the integrity of the fastening.

Safety Considerations

When working with the 3907049 Hexagon Flange Head Cap Screw, it is important to follow safety precautions to mitigate risks and ensure workplace safety. Use appropriate personal protective equipment, such as gloves and safety glasses, to protect against injuries. Handle the screw carefully to avoid damage and store it in a dry, secure location to prevent corrosion. Dispose of any damaged or unused screws according to local regulations to ensure environmental safety.

Cummins Overview

Cummins is a well-established manufacturer with a strong reputation in the automotive industry. The company has a history of producing high-quality components for commercial trucks, including the 3907049 Hexagon Flange Head Cap Screw. Cummins is committed to delivering reliable and durable parts that contribute to the performance and longevity of commercial vehicles. Their focus on quality and innovation ensures that their products meet the demanding requirements of the trucking industry.

Cummins Engine Compatibility with Part 3907049

The Hexagon Flange Head Cap Screw, part number 3907049, manufactured by Cummins, is designed to fit a variety of Cummins engines. This part is integral to the assembly and maintenance of these engines, ensuring secure fastening in various applications. Below is a detailed breakdown of the engines compatible with this part:

Small Bore Engines

• 4B3.9
• B3.9 G
• QSB3.9 30 CM550
• ISB3.9 CM2220 B107

These engines, categorized under small bore, utilize the 3907049 screw in their assembly and maintenance processes. The screw’s design ensures a tight and reliable connection, critical for the engine’s performance and longevity.

Medium Bore Engines

• 6B5.9
• B5.9
• B5.9 CM2670 B166C
• B5.9 G
• B5.9 GAS PLUS CM556
• ISB5.9 CM2880 B127
• ISB5.9G CM2180
• QSB5.9 30 CM550
• QSB5.9 CM2880 B139
• QSB5.9 CM550
• QSB5.9G

The medium bore engines also incorporate the 3907049 screw. This part is essential for maintaining the structural integrity of these engines, which are typically used in applications requiring higher power output and durability.

Large Bore Engines

• B6.7S
• G5.9
• G5.9 CM558

The large bore engines, known for their substantial power and torque, also rely on the 3907049 screw. This part’s robust design ensures it can withstand the higher stresses associated with these larger engines, contributing to their overall reliability and performance.

Each of these engines, whether small, medium, or large bore, benefits from the use of the 3907049 Hexagon Flange Head Cap Screw in their assembly and maintenance. This part’s compatibility across various engine models underscores its versatility and importance in the Cummins engine ecosystem.

Understanding the Role of Part 3907049 Hexagon Flange Head Cap Screw in Engine Systems

In the intricate world of engine systems, the part 3907049 Hexagon Flange Head Cap Screw plays a significant role in ensuring the structural integrity and functionality of various components. This screw is instrumental in the assembly and maintenance of several key parts within an engine.

Valve Cover Arrangement

The valve cover arrangement is a critical component in any engine system, serving to protect the valve train components from contaminants and to contain oil within the engine. The 3907049 Hexagon Flange Head Cap Screw is often used to secure the valve cover to the engine block. This ensures a tight seal, preventing oil leaks and maintaining the cleanliness of the valve components.

Cam Follower and Valve Mechanisms

In engines equipped with overhead valve (OHV) or overhead cam (OHC) designs, the cam follower plays a pivotal role in transferring motion from the camshaft to the valves. The 3907049 screw is frequently employed to fasten the cam follower to its respective mounting points. This secure attachment is essential for the precise operation of the valve timing, which is fundamental to the engine’s performance and efficiency.

General Cover Attachments

Beyond the valve cover and cam follower, the 3907049 Hexagon Flange Head Cap Screw is also utilized in attaching various other covers within the engine. These covers protect sensitive components and pathways, such as the timing belt or chain cover, and the oil pan. The screw’s design allows for easy installation and removal, facilitating maintenance and repair processes.

Valve and Cover Integration

The integration of valves within the engine requires precise alignment and secure fastening. The 3907049 screw is often used in conjunction with valve covers to ensure that the valves are properly seated and sealed. This not only enhances the engine’s operational efficiency but also contributes to its longevity by preventing wear and tear on the valve components.

Conclusion

In summary, the 3907049 Hexagon Flange Head Cap Screw is a versatile and essential component in the assembly and maintenance of engine systems. Its application across various covers, followers, and valve mechanisms underscores its importance in ensuring the engine’s structural integrity, operational efficiency, and longevity.

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