4007226
Fracture Resistant Screw
Cummins®

The Fracture Resistant Screw (Part #4007226) manufactured by Cummins is a specialized component designed to enhance the durability and reliability of heavy-duty truck systems. This screw is integral to maintaining the structural integrity of various truck components under demanding operational conditions.

Basic Concepts of Fracture Resistant Screws

Fracture resistant screws are engineered to withstand significant mechanical stress without breaking. They function by distributing load forces more effectively than standard screws, reducing the likelihood of failure under stress. The principles of material science, such as tensile strength, ductility, and fatigue resistance, play a role in the development of these screws, ensuring they can endure harsh environments and repeated stress cycles ¹.

Purpose and Role in Truck Operation

The 4007226 Fracture Resistant Screw is specifically designed to secure critical components in commercial trucks, ensuring they remain intact under extreme conditions. It is used in environments where vibrations, high loads, and temperature fluctuations are common, such as in the engine compartment or undercarriage of heavy-duty trucks.

Key Features

The 4007226 Fracture Resistant Screw features a robust design with a high-strength alloy composition, providing enhanced durability. Its unique attributes include a precision-machined thread profile for optimal grip and a corrosion-resistant coating to protect against environmental factors. These features contribute to its superior performance and longevity in demanding applications ².

Benefits

Utilizing fracture resistant screws like the 4007226 in heavy-duty applications offers several advantages. These include increased component longevity, improved resistance to mechanical stress, and enhanced reliability in harsh operating conditions. The screws help maintain the integrity of truck systems, reducing the need for frequent replacements and repairs.

Installation Considerations

Proper installation of the 4007226 Fracture Resistant Screw is vital for its performance and longevity. Guidelines for installation include adhering to specified torque values to ensure the screw is tightened to the correct tension without overstressing. Alignment with other components must be precise to maintain structural integrity and functionality.

Troubleshooting and Maintenance

Common issues with fracture resistant screws may include loosening due to vibrations or corrosion. Diagnostic approaches involve regular inspections for signs of wear or damage. Maintenance practices such as re-torquing screws at recommended intervals and applying protective coatings can help ensure their longevity and performance.

Comparative Analysis

When compared to standard screws and other specialty screws, the 4007226 Fracture Resistant Screw offers distinct advantages in terms of durability and resistance to mechanical stress. Its design and material composition make it particularly suited for applications where standard screws may fail prematurely.

Real-World Applications

The 4007226 Fracture Resistant Screw is utilized in various commercial truck models and configurations, demonstrating its versatility and effectiveness. It is commonly found in critical applications where reliability and durability are paramount, such as securing engine components or reinforcing chassis structures.

Manufacturer Overview - Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions. With a history of innovation and excellence, Cummins has established a strong reputation in the automotive and heavy-duty truck industry for producing high-quality, reliable components that meet the demanding needs of commercial transportation.

Fracture Resistant Screw 4007226 Compatibility with Cummins Engines

The Fracture Resistant Screw 4007226, manufactured by Cummins, is designed to ensure robust and reliable performance across a range of Cummins engines. This screw is integral to maintaining the structural integrity and operational efficiency of the engines it is used in.

QSK45 CM500 and QSK60 CM500

Both the QSK45 CM500 and QSK60 CM500 engines benefit from the use of the 4007226 screw. This component is crucial in areas where high-stress conditions are common, ensuring that the screw can withstand the rigors of continuous operation without failure.

QSK60 CM850 MCRS and QSK60 G CM2358 K110

The QSK60 CM850 MCRS and QSK60 G CM2358 K110 engines also incorporate the 4007226 screw. In these engines, the screw is used in critical applications where durability and resistance to fracture are paramount. The design of the screw ensures that it can endure the demanding environments these engines operate in.

QSK60G

The QSK60G engine utilizes the 4007226 screw in various key locations. This screw is essential for maintaining the alignment and stability of engine components, contributing to the overall reliability and longevity of the engine.

QSK78 CM500

In the QSK78 CM500 engine, the 4007226 screw is employed in areas that require a high level of mechanical integrity. Its fracture-resistant properties make it an ideal choice for ensuring that the engine can operate under extreme conditions without compromising on safety or performance.

By integrating the 4007226 screw into these engines, Cummins ensures that each component is built to withstand the stresses of heavy-duty operations, enhancing the overall reliability and performance of the engines.

Role of Part 4007226 Fracture Resistant Screw in Engine Systems

Part 4007226, the Fracture Resistant Screw, is integral to the secure assembly and reliable operation of various engine components. Its application ensures that critical connections remain intact under the demanding conditions within an engine.

Camshaft and Cylinder Head Assembly

In the camshaft and cylinder head assembly, Part 4007226 is used to fasten the camshaft to the cylinder head. This secure attachment is vital for maintaining the precise timing of valve operations, which directly influences engine performance and efficiency. The screw’s fracture resistance ensures durability under high rotational speeds and thermal stress.

Connecting Rod and Piston

For the connecting rod and piston assembly, Part 4007226 plays a role in attaching the connecting rod to the piston. This connection is subjected to significant forces during the combustion cycle. The screw’s robust design helps maintain the integrity of this linkage, ensuring smooth and consistent power transmission from the piston to the crankshaft.

Engine Top Level Assembly Piston

In the engine top-level assembly piston, the Fracture Resistant Screw is employed to secure various components, including the piston itself and associated wiring retainer brackets. This ensures that all parts remain in their correct positions, contributing to the overall stability and performance of the engine.

Fuel Manifold and Injector Plumbing

Within the fuel manifold and injector plumbing, Part 4007226 is used to fasten components that deliver fuel to the combustion chambers. The screw’s reliability under pressure and temperature fluctuations is essential for maintaining a consistent fuel supply, which is critical for engine performance and emissions control.

Performance Parts and Engine Connecting Rod

In performance parts and the engine connecting rod, the Fracture Resistant Screw is utilized to enhance the durability and reliability of high-stress connections. This is particularly important in performance engines where components are pushed to their limits, requiring secure and lasting fastening solutions.

Head and Cylinder

The head and cylinder assembly also benefit from the use of Part 4007226. The screw ensures that the head is securely attached to the cylinder, preventing leaks and maintaining the structural integrity of the engine block. This is essential for optimal combustion efficiency and engine longevity.

Injector and Wiring Retainer Bracket

Lastly, in the injector and wiring retainer bracket, the Fracture Resistant Screw provides a secure attachment point for the injector, ensuring it remains in the correct position for precise fuel delivery. Additionally, it secures the wiring retainer bracket, protecting electrical connections from vibration and movement, which is vital for the engine’s electronic control systems.

Conclusion

Overall, Part 4007226 Fracture Resistant Screw is a fundamental component in ensuring the secure and reliable operation of various engine systems, contributing to enhanced performance, durability, and efficiency. Its robust design, high-strength alloy composition, and corrosion-resistant coating make it an essential part for heavy-duty applications, particularly in the demanding environments of commercial trucks and engines.