3930249
Hexagon Flange Head Cap Screw
Cummins®

Introduction to Hexagon Flange Head Cap Screws

Hexagon flange head cap screws are specialized fasteners featuring a hexagonal head and a flanged base. These screws are designed to offer a secure and stable connection, commonly used in applications requiring a flush, smooth surface. The flange distributes the load evenly, minimizing the risk of damage to the material being fastened ¹.

Purpose and Role of the Cummins 3930249 Hexagon Flange Head Cap Screw

The Cummins 3930249 Hexagon Flange Head Cap Screw is meticulously engineered for use in commercial truck engines. This screw is vital for securing various engine components, ensuring they remain tightly fastened and properly aligned. Its design facilitates easy installation and removal, which is crucial during maintenance and repair operations ².

How the Cummins 3930249 Hexagon Flange Head Cap Screw Works

The 3930249 Hexagon Flange Head Cap Screw functions by threading into a pre-tapped hole, creating a robust bond between the fastened components. The hexagonal head allows for torque application using a wrench or socket, providing the necessary force to secure the screw. The flange base ensures the screw sits flush with the surface, maintaining a smooth and even finish ³.

Importance in Truck Operations

Reliability and durability are critical in commercial truck operations. The Cummins 3930249 Hexagon Flange Head Cap Screw is built to endure the high stresses and vibrations typical in truck engines. Its use ensures that essential engine components remain securely fastened, contributing to the overall performance and longevity of the truck.

Troubleshooting Common Issues

Engineers and mechanics may encounter several issues when working with the Cummins 3930249 Hexagon Flange Head Cap Screw. Common problems include stripped threads, improper torque settings, and corrosion. To address these issues, it is essential to use the correct tools and adhere to torque specifications. Regularly inspecting the screws for signs of wear or damage can also prevent potential failures.

Maintenance Tips

Proper maintenance of the Cummins 3930249 Hexagon Flange Head Cap Screw is crucial for ensuring its longevity and effectiveness. Here are some maintenance tips:

• Regular Inspections: Periodically check the screws for signs of loosening, corrosion, or damage.
• Cleaning: Keep the screws clean to prevent corrosion and ensure a secure connection.
• Proper Storage: Store the screws in a dry, clean environment to avoid rust and contamination.

About Cummins

Cummins is a global power leader and a pioneer in the design and manufacture of engines, engine components, and related technologies. Renowned for its innovation and quality, Cummins provides products and services to a wide range of industries, including commercial trucks. Their commitment to excellence ensures that their components, such as the 3930249 Hexagon Flange Head Cap Screw, meet the highest standards of performance and reliability.

Expertise and Authority

As an expert in commercial truck parts, it is evident that the Cummins 3930249 Hexagon Flange Head Cap Screw is a critical component in ensuring the smooth operation of truck engines. With decades of experience in the industry, Cummins has established itself as a trusted provider of high-quality, reliable parts. This screw exemplifies their dedication to engineering excellence and their understanding of the unique demands faced by commercial truck operators.

Hexagon Flange Head Cap Screw 3930249 Compatibility with Cummins Engines

The Cummins part number 3930249, a Hexagon Flange Head Cap Screw, is designed to fit a variety of Cummins engines. This screw is integral in securing various components within the engine assembly, ensuring structural integrity and proper functioning. Below is a detailed breakdown of the engines with which this part is compatible:

4B3.9 and QSB3.9 30 CM550

The 3930249 screw is compatible with the 4B3.9 engine and the QSB3.9 30 CM550 engine. These engines are often used in agricultural and construction machinery, where robust and reliable fastening solutions are crucial.

6B5.9 and QSB5.9 30 CM550

This screw also fits the 6B5.9 engine and the QSB5.9 30 CM550 engine. These engines are known for their power and efficiency, making them suitable for heavy-duty applications.

6C8.3 and QSC8.3 CM554, QSC8.3 CM850(CM2850)

The 3930249 screw is compatible with the 6C8.3 engine, as well as the QSC8.3 CM554 and QSC8.3 CM850(CM2850) engines. These engines are typically used in medium to heavy-duty applications, requiring reliable fastening to maintain performance.

B4.5, B5.9 G, B5.9 GAS PLUS CM556, and L GAS PLUS CM556

The screw fits the B4.5, B5.9 G, B5.9 GAS PLUS CM556, and L GAS PLUS CM556 engines. These engines are often used in various industrial and commercial applications, where durability and performance are paramount.

G5.9 and G5.9 CM558

The 3930249 screw is also compatible with the G5.9 and G5.9 CM558 engines. These engines are designed for high-performance applications, requiring reliable fastening solutions to ensure optimal operation.

ISB CM550, ISB5.9G CM2180, ISL CM554, ISL G CM2180, QSL8.9 CM2150 L141, QSL9 CM554, QSL9 CM850(CM2850), and QSM11 CM570

This screw fits the ISB CM550, ISB5.9G CM2180, ISL CM554, ISL G CM2180, QSL8.9 CM2150 L141, QSL9 CM554, QSL9 CM850(CM2850), and QSM11 CM570 engines. These engines are used in a variety of applications, from heavy-duty trucks to industrial machinery, where reliability and performance are critical.

The compatibility of the 3930249 Hexagon Flange Head Cap Screw with these engines ensures that it can be used across a wide range of applications, providing a reliable fastening solution for critical engine components.

Role of Part 3930249 Hexagon Flange Head Cap Screw in Engine Systems

The part 3930249 Hexagon Flange Head Cap Screw is instrumental in securing various components within engine systems, ensuring stability and proper function.

Turbocharger and Exhaust Manifold Integration

In turbocharger arrangements, this screw is utilized to fasten the turbocharger to its mounting location. It ensures that the turbocharger remains securely attached to the exhaust manifold, which is vital for the efficient operation of the turbocharger. The screw’s flange head provides additional surface area for a more robust connection, reducing the risk of loosening under high engine vibrations.

Exhaust Manifold and Manifold Kits

When dealing with exhaust manifold kits, the Hexagon Flange Head Cap Screw plays a significant role in attaching the manifold to the engine block. This secure attachment is essential for maintaining the integrity of the exhaust system, ensuring that exhaust gases are directed efficiently away from the engine. The flange head of the screw also aids in distributing the clamping force more evenly, which is particularly important in high-stress areas of the engine.

Alternator Mounting

In alternator mounting applications, the screw is used to secure the alternator to its designated location on the engine. This is important for maintaining the electrical system’s reliability, as a loose alternator can lead to inconsistent power supply to the engine’s electrical components. The flange head of the screw provides additional stability, which is beneficial given the alternator’s role in generating electrical power under varying engine loads.

General Use in Engine Component Mounting

Across various engine component mountings, the Hexagon Flange Head Cap Screw is a versatile fastener. Its design allows for easy installation and removal using standard hexagonal tools, making it a preferred choice for both initial assembly and maintenance procedures. The screw’s ability to provide a strong, secure connection is essential in environments where components are subject to significant thermal and mechanical stresses.

Conclusion

The Cummins 3930249 Hexagon Flange Head Cap Screw is a critical component in the secure attachment of various engine parts, contributing to the overall reliability and performance of the engine system. Its compatibility with a wide range of Cummins engines ensures that it can be used across various applications, providing a reliable fastening solution for critical engine components.