3927949
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3927949 and manufactured by Cummins, is a specialized fastener designed for use in commercial trucks. This screw is integral to the assembly and maintenance of various truck components, ensuring secure and reliable connections. Cummins, a renowned name in the automotive industry, is known for its commitment to quality and innovation, which is reflected in the design and performance of this screw ¹.

Basic Concepts

Hexagon Flange Head Cap Screws are characterized by their hexagonal head and flange, which provide additional surface area for torque application and prevent the screw from sinking into the material. These screws are commonly used in the automotive industry for their ability to provide strong, secure fastening in a variety of applications. The design of the flange head allows for easier installation and removal using standard tools, making it a preferred choice for both manufacturers and maintenance professionals ².

Purpose and Role in Truck Operation

The 3927949 Hexagon Flange Head Cap Screw plays a specific role in the operation of commercial trucks by securing critical components that are subject to significant stress and vibration. Its design ensures that connections remain tight and secure, which is vital for the safe and efficient operation of the vehicle. By maintaining these connections, the screw contributes to the overall functionality and performance of the truck, ensuring that all parts work together seamlessly ¹.

Key Features

The 3927949 Hexagon Flange Head Cap Screw features a hexagonal flange head, which provides a larger surface area for torque application and helps to distribute force more evenly. The screw is made from high-quality materials, typically a grade of steel that offers excellent strength and durability. Its thread specifications are designed to ensure a secure fit, reducing the risk of loosening over time. These features enhance the screw’s performance and reliability in truck applications, making it a robust solution for fastening critical components ².

Benefits

Using the 3927949 Hexagon Flange Head Cap Screw in commercial trucks offers several benefits. The screw provides improved fastening strength, ensuring that connections remain secure under various operating conditions. Its material composition offers corrosion resistance, which is particularly important in environments where trucks are exposed to moisture and other corrosive elements. Additionally, the design of the screw allows for ease of installation, reducing maintenance time and effort. The longevity of the screw ensures that it can withstand the rigors of commercial truck operation, providing reliable performance over an extended period ¹.

Troubleshooting and Maintenance

Common issues with the 3927949 Hexagon Flange Head Cap Screw may include loosening, corrosion, or damage. To address these issues, regular inspections should be conducted to ensure that all screws are tight and free from corrosion. If corrosion is detected, the affected area should be cleaned, and the screw may need to be replaced to maintain secure fastening. Proper maintenance, including the use of the correct torque settings during installation, will help ensure optimal performance and longevity of the screw ².

Cummins Overview

Cummins is a well-established company with a strong reputation in the automotive industry. Founded in 1919, Cummins has a long history of innovation and quality, particularly in the design and manufacture of diesel engines and related components. The company’s commitment to excellence is evident in its products, including the 3927949 Hexagon Flange Head Cap Screw. Cummins’ expertise in engineering and manufacturing ensures that this screw meets the high standards required for use in commercial trucks, contributing to the reliability and performance of the vehicle ¹.

Cummins Engine Compatibility with Part 3927949

The Hexagon Flange Head Cap Screw, part number 3927949, manufactured by Cummins, is designed to integrate seamlessly with a variety of Cummins engines. This part is essential for securing components and ensuring the structural integrity of the engine assembly. Below is a detailed overview of its compatibility with specific Cummins engines:

Cummins 4B3.9 and B3.9 G Engines

The 4B3.9 and B3.9 G engines benefit from the use of the 3927949 screw in several critical applications. These engines, known for their reliability and performance, often require precise fastening solutions to maintain operational efficiency. The screw’s robust design ensures that it can withstand the operational stresses and environmental conditions these engines encounter.

Cummins B4.5 Engine

The B4.5 engine, another member of the Cummins lineup, also utilizes the 3927949 screw in various assembly processes. This engine is designed for durability and efficiency, and the screw’s compatibility with its components is crucial for maintaining the engine’s structural integrity and performance.

Cummins QSB3.9 30 CM550 Engine

The QSB3.9 30 CM550 engine, a high-performance model, incorporates the 3927949 screw in its design. This engine is engineered for demanding applications, and the screw’s ability to provide secure fastening is vital for its operation. The screw’s design ensures that it can handle the specific stresses and conditions encountered by this engine.

Cummins QSK95 CM2350 K111 and QSK95 CM2350 K113 Engines

The QSK95 CM2350 K111 and QSK95 CM2350 K113 engines, both part of Cummins’ advanced engine series, also rely on the 3927949 screw. These engines are known for their power and efficiency, and the screw’s compatibility with their components is essential for maintaining their operational integrity. The screw’s design ensures that it can provide the necessary fastening strength and durability in these high-performance engines.

Each of these engines, while distinct in their specifications and applications, shares a common requirement for reliable and durable fastening solutions. The 3927949 Hexagon Flange Head Cap Screw, with its robust design and compatibility with Cummins engines, meets this requirement effectively ¹.

Role of Part 3927949 Hexagon Flange Head Cap Screw in Engine Systems

In the intricate assembly of engine systems, the part 3927949 Hexagon Flange Head Cap Screw plays a significant role in ensuring the secure fastening of various components. This screw is integral in maintaining the structural integrity and operational efficiency of the engine.

Balancer

The balancer, a component designed to reduce vibrations caused by the engine’s operation, relies on precise fastening to function effectively. The Hexagon Flange Head Cap Screw ensures that the balancer is securely attached to the engine block, minimizing the risk of misalignment or detachment during operation. This secure attachment is vital for maintaining smooth engine performance and reducing wear on other components.

Engine

Within the engine itself, the Hexagon Flange Head Cap Screw is used to fasten various sub-components, such as cylinder heads, valve covers, and intake manifolds. These fastenings are essential for maintaining the engine’s structural integrity and ensuring that all parts operate in unison. The screw’s design allows for easy installation and removal, facilitating maintenance and repair processes.

Filter

In the filtration system, the Hexagon Flange Head Cap Screw is employed to secure oil and fuel filters. Proper fastening of these filters is necessary to prevent leaks and ensure that contaminants are effectively removed from the engine’s lubricants and fuel. This contributes to the longevity of the engine by maintaining clean operating fluids.

Lubricating Oil System

The lubricating oil system, which is paramount for reducing friction and wear within the engine, also benefits from the use of the Hexagon Flange Head Cap Screw. This screw is used to secure oil pans, sumps, and various housings within the lubrication system. Secure fastenings prevent oil leaks and ensure that the system maintains consistent oil pressure, which is essential for the engine’s health and performance ².

Conclusion

The 3927949 Hexagon Flange Head Cap Screw is a critical component in the assembly and maintenance of commercial trucks and Cummins engines. Its robust design, compatibility with various engine models, and the benefits it offers in terms of secure fastening and corrosion resistance make it an essential part for ensuring the reliability and performance of these vehicles. Regular maintenance and proper installation practices are key to maximizing the longevity and effectiveness of this Cummins part.