3944087
Studded Flange Cap Screw
Cummins®

The 3944087 Studded Flange Cap Screw is a specialized fastener produced by Cummins, a renowned manufacturer in the commercial truck industry. This screw is designed for use in heavy-duty applications, where reliability and durability are paramount. Its primary application is in commercial trucks, where it contributes to the secure assembly of various components.

Basic Concepts of Studded Flange Cap Screws

Studded flange cap screws are a type of fastener characterized by a threaded shank and a flanged head. The flange provides additional surface area for distribution of clamping force, which enhances the screw’s ability to hold components together securely ¹. In mechanical applications, these screws are often used to join metal parts, providing a robust and reliable connection. They function by converting torque applied to the screw head into axial force, which clamps the joined parts together.

Role and Function in Truck Operation

In the operation of commercial trucks, the Studded Flange Cap Screw plays a significant role in ensuring the structural integrity and performance of various assemblies. It is commonly used in applications where components are subjected to high stress and vibration, such as in engine mounts, transmission housings, and chassis components. The screw helps maintain the alignment and stability of these parts, which is vital for the overall performance and safety of the truck ².

Key Features

The 3944087 Studded Flange Cap Screw is distinguished by several key features that enhance its functionality and durability. It is made from high-strength materials, typically alloy steel, which provides excellent resistance to wear and fatigue. The screw features a coarse thread, which allows for quick assembly and disassembly. The flanged head design distributes clamping force more evenly, reducing the risk of damage to the joined parts. Additionally, the screw may have a zinc-plated finish to protect against corrosion, extending its service life in harsh operating conditions ³.

Benefits

Using the 3944087 Studded Flange Cap Screw offers several benefits. Its design provides improved fastening security, ensuring that components remain firmly in place even under significant stress and vibration. The screw’s resistance to corrosion enhances its longevity, making it suitable for use in demanding environments. Furthermore, the ease of installation and removal facilitated by the coarse thread contributes to efficient maintenance and repair processes.

Installation Considerations

Proper installation of the 3944087 Studded Flange Cap Screw is crucial for optimal performance and safety. It is recommended to use a torque wrench to apply the specified torque, ensuring that the screw is tightened to the manufacturer’s recommendations. This helps prevent over-tightening, which can lead to damage, and under-tightening, which can result in insufficient clamping force. Using the appropriate tools and following best practices, such as lubricating the threads to reduce friction, can further enhance the installation process.

Troubleshooting Common Issues

Common problems associated with studded flange cap screws include loosening, corrosion, and damage. If a screw appears loose, it should be re-tightened to the specified torque. Corrosion can be addressed by cleaning the affected area and applying a corrosion-resistant coating. Damaged screws should be replaced to maintain the integrity of the assembly. Regular inspections can help identify issues early, allowing for timely intervention.

Maintenance Tips

To prolong the service life of the 3944087 Studded Flange Cap Screw, regular maintenance is recommended. This includes periodic inspections to check for signs of wear, corrosion, or damage. Cleaning the screw and surrounding area can prevent the buildup of dirt and debris, which can contribute to corrosion. If significant wear or damage is detected, the screw should be replaced to ensure continued reliable performance.

Cummins: Manufacturer 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 has established a reputation for quality and reliability in the commercial truck industry. The company’s extensive product range includes engines, powertrain components, and aftermarket parts, all of which are designed to meet the demanding requirements of heavy-duty applications. The 3944087 Studded Flange Cap Screw is a testament to Cummins’ commitment to providing high-quality, durable components for the commercial truck market.

Studded Flange Cap Screw (Part 3944087) in Cummins Engines

The Studded Flange Cap Screw (Part 3944087) is a critical component used in several Cummins engine models. This part is essential for securing various flanges and ensuring the integrity of the engine’s sealing and structural components.

ISB CM550 and QSB5.9 44 CM550

The Studded Flange Cap Screw is utilized in the ISB CM550 and QSB5.9 44 CM550 engines for securing the cylinder head to the engine block. This ensures that the cylinder head is tightly fastened, preventing leaks and maintaining the engine’s operational efficiency.

ISC CM554, ISL CM554, QSC8.3 CM554, and QSL9 CM554

In the ISC CM554, ISL CM554, QSC8.3 CM554, and QSL9 CM554 engines, the Studded Flange Cap Screw is used in various applications, including securing the turbocharger to the intake manifold and other critical flanges. This helps maintain the structural integrity of these components, ensuring optimal performance and longevity of the engine.

The consistent use of the Studded Flange Cap Screw across these engines highlights its importance in maintaining the engine’s sealing and structural integrity. This part is designed to withstand the high stresses and temperatures encountered in these engines, ensuring reliable performance over time.

Role of Part 3944087 Studded Flange Cap Screw in Engine Systems

The Part 3944087 Studded Flange Cap Screw is an essential component in the secure assembly and operation of various engine systems. Its primary function is to provide a robust fastening mechanism that ensures the integrity and stability of critical engine components.

Turbocharger Integration

In turbocharger systems, the Studded Flange Cap Screw is utilized to secure the turbocharger to the engine block or manifold. This secure attachment is vital for maintaining the alignment and operational efficiency of the turbocharger. It ensures that the turbocharger can withstand the high rotational speeds and pressures it encounters, contributing to the overall performance and reliability of the engine.

Manifold Assembly

When it comes to manifold assemblies, the Studded Flange Cap Screw plays a significant role in attaching the manifold to the engine block. This secure connection is necessary for maintaining the proper flow of air and exhaust gases. It helps prevent leaks and ensures that the manifold can endure the thermal and mechanical stresses it is subjected to during engine operation.

Air Intake System

In the air intake system, the Studded Flange Cap Screw is employed to fasten components such as the air filter housing, intake ducts, and other related parts. This secure attachment is important for maintaining the structural integrity of the air intake system. It ensures that the system can effectively deliver clean and metered air to the engine, which is essential for optimal combustion and engine performance.

Component Arrangement

The Studded Flange Cap Screw is also instrumental in the overall arrangement and alignment of various engine components. By providing a strong and reliable fastening solution, it helps ensure that components are properly positioned and secured. This is particularly important in high-performance engines where precise component alignment can significantly impact engine efficiency and durability.

Conclusion

In summary, the Part 3944087 Studded Flange Cap Screw is a key component in the secure and efficient operation of turbochargers, manifolds, air intake systems, and the general arrangement of engine components. Its reliable fastening capability is essential for maintaining the performance and longevity of these critical engine systems.