3930250
Studded Flange Cap Screw
Cummins®

The Studded Flange Cap Screw, identified by Part #3930250, is a component manufactured by Cummins, a renowned name in the automotive and heavy-duty truck industry. This part plays a role in the mechanical systems of heavy-duty trucks, ensuring the secure attachment of various components. Cummins, with its reputation for quality and innovation, provides this part as a reliable solution for the demanding environments in which heavy-duty trucks operate ¹.

Basic Concepts

A Studded Flange Cap Screw is a type of fastener that consists of a threaded stud with a flange at one end and a cap screw at the other. The flange provides a broad surface area for distribution of clamping force, while the threaded stud allows for secure attachment into a corresponding threaded hole. Within a truck’s mechanical system, this screw is used to join components that require a strong, vibration-resistant connection ².

Role and Function

The 3930250 Studded Flange Cap Screw serves a function in the operation of a truck by securely fastening components that are subject to significant stress and vibration. It is commonly used in applications where a standard bolt might not provide sufficient strength or resistance to loosening. The screw supports various systems within the truck, including engine components, exhaust systems, and chassis parts, ensuring they remain firmly in place under operating conditions ³.

Key Features

The 3930250 Studded Flange Cap Screw is characterized by several key features that enhance its performance. It is typically made from high-strength steel, which provides durability and resistance to wear. The design includes a flange that distributes clamping force over a larger area, reducing the risk of damage to the fastened components. Additionally, the screw may feature a unique thread profile or coating to improve resistance to corrosion and ease of installation ⁴.

Benefits

Utilizing the 3930250 Studded Flange Cap Screw offers several advantages in truck maintenance and operation. Its robust construction and design contribute to increased durability, ensuring long-term reliability even in harsh operating conditions. The screw’s ability to resist loosening under vibration enhances the efficiency and safety of the truck’s mechanical systems. Furthermore, its ease of installation and maintenance simplifies repair and replacement processes.

Installation Process

Proper installation of the Studded Flange Cap Screw involves several steps to ensure a secure and lasting connection. Begin by cleaning the mating surfaces to remove any debris or corrosion. Insert the screw into the corresponding threaded hole, ensuring it is aligned correctly. Use a torque wrench to tighten the screw to the manufacturer’s specified torque setting, avoiding over-tightening which could damage the screw or the fastened components. Finally, inspect the installation for proper seating and security.

Troubleshooting and Maintenance

Common issues with the 3930250 Studded Flange Cap Screw may include loosening due to vibration or corrosion. Regular inspection and maintenance can help identify and resolve these problems. If loosening is detected, re-tighten the screw to the specified torque setting. In cases of corrosion, cleaning the affected areas and applying a corrosion-resistant coating may be necessary. Routine maintenance should include checking for signs of wear or damage and replacing the screw if necessary to ensure continued reliability.

Safety Considerations

When working with the Studded Flange Cap Screw, it is important to observe several safety guidelines. Use appropriate personal protective equipment, such as gloves and safety glasses, to protect against injury. Ensure the truck is securely supported and the engine is off before beginning any work. Follow the manufacturer’s torque specifications to avoid over-tightening, which could lead to damage or failure. Store the screws in a dry, corrosion-resistant environment to maintain their integrity.

Cummins Overview

Cummins is a leading manufacturer in the automotive and heavy-duty truck industry, known for its commitment to quality, innovation, and customer satisfaction. With a history spanning over a century, Cummins has established a reputation for producing reliable and high-performance components. Their dedication to research and development ensures that their products, including the 3930250 Studded Flange Cap Screw, meet the rigorous demands of modern heavy-duty applications.

Compatibility with Cummins Engines

The Studded Flange Cap Screw 3930250, manufactured by Cummins, is a component that ensures secure fastening in various engine applications. This part is designed to fit seamlessly with a range of Cummins engines, providing robust and reliable performance.

Compatibility with Specific Engine Models

• 4B3.9
• 6B5.9
• 6C8.3
• B4.5
• B5.9 G
• B5.9 GAS PLUS CM556
• ISB5.9G CM2180
• ISL G CM2180
• L GAS PLUS CM556
• QSB3.9 30 CM550
• QSB5.9 30 CM550
• QSB5.9 CM550

This compatibility ensures that the 3930250 screw can be used across multiple engine models, providing a consistent and reliable fastening solution.

Role of Part 3930250 Studded Flange Cap Screw in Engine Systems

The 3930250 studded flange cap screw is integral to the assembly and functionality of various engine components. Its primary role is to secure and maintain the integrity of connections within the engine system.

In the turbocharger arrangement, the 3930250 screw is used to fasten the turbocharger to its mounting points. This ensures that the turbocharger remains securely in place, allowing it to operate efficiently without the risk of displacement or damage due to vibrations.

Within the exhaust manifold, the screw plays a key role in attaching the manifold to the engine block. This connection is vital for directing exhaust gases away from the engine, contributing to the overall performance and efficiency of the engine.

In the campaign kit, which often includes various engine components designed to address specific performance or reliability issues, the 3930250 screw is used to assemble and secure parts, ensuring that the kit functions as intended.

The heat shield attachment also benefits from the use of this screw. By securing the shield in place, it ensures that heat is effectively managed around critical engine components, preventing damage and enhancing engine longevity.

Conclusion

In summary, the 3930250 studded flange cap screw is a fundamental component in the secure assembly of turbochargers, exhaust manifolds, campaign kits, and heat shields, contributing to the reliable operation and performance of engine systems.