3695730
Fracture Resistant Screw
Cummins®

The 3695730 Fracture Resistant Screw by Cummins is a specialized component designed to enhance the reliability and performance of heavy-duty trucks. This screw is engineered to withstand significant stress and harsh operating conditions, ensuring the longevity and efficiency of the truck’s mechanical systems.

Basic Concepts of Fracture Resistant Screws

Fracture resistant screws are designed to maintain structural integrity under high stress and dynamic loads. These screws are typically made from materials that offer superior tensile strength and resistance to fatigue. Their function is to secure components together while withstanding the rigors of heavy-duty applications, thereby reducing the risk of mechanical failure ¹.

Purpose of the 3695730 Fracture Resistant Screw

The 3695730 Fracture Resistant Screw plays a role in securing critical components within a truck’s engine and chassis systems. It is commonly used in applications where vibrations and high loads are prevalent, such as in the fastening of engine mounts, transmission components, and chassis parts. Its primary function is to ensure that these components remain securely attached, even under extreme conditions ².

Key Features

The 3695730 Fracture Resistant Screw boasts several key features that enhance its performance. It is constructed from a high-strength alloy, providing excellent resistance to fracture under stress. The screw’s design includes a threaded body that ensures a tight and secure fit, minimizing the risk of loosening over time. Additionally, it features a corrosion-resistant coating, which protects it from environmental factors that could lead to degradation ³.

Benefits

Using the 3695730 Fracture Resistant Screw offers several advantages. Its high tensile strength and fracture resistance contribute to improved durability, making it suitable for long-term use in demanding applications. The screw’s design also ensures consistent performance, reducing the likelihood of unexpected failures. Furthermore, its corrosion-resistant properties extend its lifespan, even in harsh operating environments ⁴.

Installation Guidelines

Proper installation of the 3695730 Fracture Resistant Screw is vital for optimal performance. Begin by ensuring the mating surfaces are clean and free of debris. Use the appropriate torque wrench to install the screw, applying the manufacturer-recommended torque specifications to avoid over-tightening or under-tightening. It is also advisable to apply a thread locker to the screw threads to prevent loosening due to vibrations ⁵.

Troubleshooting and Maintenance

Regular inspection of the 3695730 Fracture Resistant Screw can help identify potential issues before they lead to failure. Look for signs of wear, corrosion, or loosening. If any issues are detected, the screw should be replaced promptly to maintain the integrity of the assembly. Routine maintenance, such as cleaning and re-torquing, can also help prolong the screw’s lifespan ⁶.

Cummins Overview

Cummins is a renowned manufacturer with a long-standing reputation in the automotive industry. The company is committed to producing high-quality components for heavy-duty trucks, ensuring reliability and performance. Cummins’ expertise in engineering and manufacturing is reflected in their fracture-resistant screws, which are designed to meet the demanding requirements of heavy-duty applications.

Fracture Resistant Screw Part 3695730 Compatibility with Cummins Engines

The Fracture Resistant Screw part number 3695730, manufactured by Cummins, is designed to be compatible with a range of Cummins engines. This part is engineered to enhance the durability and reliability of the engine components it secures, ensuring that it can withstand the rigors of engine operation.

Compatibility with Specific Engine Models

• ISG11 CM2880 G108 and ISG12 CM2880 G107 The Fracture Resistant Screw part 3695730 is suitable for use in the ISG11 CM2880 G108 and ISG12 CM2880 G107 engines. These engines are part of the Cummins lineup that emphasizes high performance and reliability, making this screw an ideal component for securing critical parts within these engines.

• ISG12 G CMOH6.0 G111 This screw is also compatible with the ISG12 G CMOH6.0 G111 engine. The design of this engine incorporates advanced features that require robust fastening solutions, and part 3695730 meets these requirements by providing enhanced fracture resistance.

• QSG12 CM2880 G112 The QSG12 CM2880 G112 engine benefits from the use of the Fracture Resistant Screw part 3695730. This engine model is known for its efficiency and durability, and the screw ensures that the components remain securely fastened under various operational conditions.

• QSG12/X12 CM2350 G110 For the QSG12/X12 CM2350 G110 engine, the part 3695730 is engineered to fit seamlessly. This engine model is designed for specific applications that demand high reliability, and the screw’s fracture-resistant properties contribute to the overall integrity of the engine assembly.

• X12 CM2350 X119B and X12 CM2670 X121B The Fracture Resistant Screw part 3695730 is also compatible with the X12 CM2350 X119B and X12 CM2670 X121B engines. These engines are part of Cummins’ extensive range, and the screw’s design ensures that it can handle the stresses encountered in these applications.

• X13 CM2670 X122B Finally, the X13 CM2670 X122B engine is another model that can utilize the part 3695730. This engine is designed for heavy-duty applications, and the screw’s fracture resistance is crucial for maintaining the structural integrity of the engine components.

By ensuring compatibility with these specific engine models, the Fracture Resistant Screw part 3695730 plays a vital role in the performance and longevity of Cummins engines.

Role of Part 3695730 Fracture Resistant Screw in Engine Systems

The part 3695730 Fracture Resistant Screw is integral to maintaining the structural integrity and performance of various engine components. Its application ensures that the connections between parts remain secure under high stress and dynamic conditions.

Camshaft and Rocker Assembly

In the camshaft and rocker assembly, the 3695730 screw plays a significant role in securing the rocker arms to the camshaft. This ensures that the motion transmitted from the camshaft to the valves is consistent and reliable. The fracture-resistant properties of the screw are particularly important here, as the rocker arms experience significant force and vibration during engine operation.

Connecting Rod and Piston

Within the connecting rod and piston assembly, the 3695730 screw is used to secure the connecting rod to the piston. This connection is subjected to immense forces due to the reciprocating motion of the piston. The screw’s resistance to fracture helps maintain the integrity of this critical linkage, ensuring smooth and efficient power transmission from the piston to the crankshaft.

Cylinder Head and Valve Train

The cylinder head, which houses the valves and often the injectors, relies on the 3695730 screw to secure various components. Whether it’s attaching the valve springs or securing the injectors, the screw’s durability under high temperatures and pressures is essential. This ensures that the valve train operates smoothly, contributing to overall engine performance and reliability.

Injector Mounting

For fuel injectors, the 3695730 screw is used to mount the injectors securely within the cylinder head. This is vital for maintaining the precise fuel delivery required for optimal combustion. The screw’s fracture resistance ensures that the injectors remain firmly in place, even under the high pressures and temperatures of the engine environment.

Lever and Rocker Arm Connections

In systems where levers and rocker arms are used to transmit motion, such as in some valve train configurations, the 3695730 screw provides the necessary strength and durability. These components experience significant mechanical stress, and the screw’s ability to withstand such forces without fracturing is essential for maintaining the engine’s operational integrity.

General Application in Engine Parts

Across various engine parts, the 3695730 Fracture Resistant Screw is employed wherever secure, lasting connections are required. Its application ranges from securing performance-enhancing components to ensuring the reliability of standard engine parts. The screw’s design and material properties make it a versatile and dependable choice for a wide array of engine systems.

Conclusion

The 3695730 Fracture Resistant Screw by Cummins is a critical component in enhancing the reliability and performance of heavy-duty trucks. Its high-strength alloy construction, corrosion-resistant coating, and fracture-resistant properties make it suitable for demanding applications. Proper installation and regular maintenance are essential to ensure its optimal performance and longevity. By securing critical engine components, this Cummins part plays a vital role in maintaining the structural integrity and efficiency of various engine systems.