3910665
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by Part #3910665, is a specialized fastener produced by Cummins, a renowned manufacturer in the automotive and heavy-duty truck industries. This screw is integral to various commercial truck applications due to its robust design and reliable performance. Cummins, known for its high-quality components, ensures that this screw meets the demanding requirements of heavy-duty truck operations.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by its hexagonal head and a flange beneath the head. The hexagonal head allows for efficient torque application using standard tools, while the flange provides a larger bearing surface that helps distribute the load more evenly. This design is particularly beneficial in applications where vibrations and dynamic loads are common, as it enhances the screw’s resistance to loosening.

Purpose and Role in Truck Operation

This Cummins part plays a significant role in the operation and maintenance of commercial trucks. It is commonly used in various truck components, including engine mounts, chassis assemblies, and body panels. Its primary function is to securely fasten these components, ensuring they remain firmly in place under the stress of heavy loads and rough road conditions. The screw’s design helps maintain the structural integrity of the truck, contributing to overall safety and performance.

Key Features

The 3910665 boasts several key features that enhance its performance and durability. Its hexagonal head design allows for straightforward and precise torque application, reducing the risk of over-tightening or stripping. The flange beneath the head provides an increased bearing surface, which helps distribute the load more effectively and prevents the screw from pulling through the material. Additionally, the screw is made from high-strength materials, ensuring it can withstand the rigors of heavy-duty truck applications.

Benefits

This part offers several benefits that make it an ideal choice for commercial truck applications. Its design allows for improved torque application, ensuring that components are securely fastened without the risk of over-tightening. The flange characteristic enhances resistance to loosening, which is crucial in dynamic environments where vibrations are common. Furthermore, the screw’s material properties contribute to its durability, providing long-lasting performance even under demanding conditions.

Installation and Usage

Proper installation of the 3910665 is crucial to ensure secure and reliable fastening. It is recommended to use a torque wrench to apply the specified torque, which helps prevent over-tightening and ensures consistent fastening across multiple applications. Additionally, using a thread lubricant can facilitate easier installation and reduce the risk of damage to the screw or the threaded hole. Following these best practices will help maintain the screw’s integrity and performance over time.

Troubleshooting and Maintenance

Common issues with the 3910665 may include loosening or corrosion. Regular inspections can help identify these problems early, allowing for timely intervention. If loosening is detected, re-torque the screw to the specified value. In cases of corrosion, cleaning the affected area and applying a corrosion-resistant coating can help prolong the screw’s lifespan. Routine maintenance, including checking for proper torque and ensuring the screw remains free of debris, will help maintain optimal performance.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. Founded in 1919, Cummins has built a reputation for producing high-quality, reliable components that meet the demanding requirements of various industries, including automotive and heavy-duty trucking. The company’s commitment to innovation and excellence ensures that its products, like the 3910665, deliver superior performance and durability.

Hexagon Flange Head Cap Screw 3910665 in Cummins Engines

The 3910665, manufactured by Cummins, is a critical component in various Cummins engine models. This part is designed to provide secure fastening in applications where a robust and reliable connection is essential. Here are the engines where this screw is utilized:

4B3.9 and 6B5.9 Engines

The 4B3.9 and 6B5.9 engines both benefit from the use of the 3910665 screw. These engines are known for their durability and efficiency, often used in heavy-duty applications. The screw ensures that various components are securely fastened, maintaining the integrity of the engine’s structure.

B4.5 and B5.9 G Engines

In the B4.5 and B5.9 G engines, the 3910665 screw is used to secure critical engine parts. These engines are designed for versatility and reliability, making the screw an essential part of their assembly.

G855 CM558 and GTA855 CM558 (CM2358) G101 Engines

The G855 CM558 and GTA855 CM558 (CM2358) G101 engines utilize the 3910665 screw for its precision and strength. These engines are often found in demanding applications where reliability is paramount.

K50 and KTA19GC Engines

Both the K50 and KTA19GC engines incorporate the 3910665 screw. These engines are known for their power and efficiency, and the screw’s design ensures that all components are tightly secured.

KTA19GC CM558 and QSB3.9 30 CM550 Engines

The KTA19GC CM558 and QSB3.9 30 CM550 engines also use the 3910665 screw. These engines are designed for heavy-duty use, and the screw’s ability to provide a strong fastening is crucial for their operation.

QSB4.5 CM850 (CM2850), QSC8.3 CM850 (CM2850), and QSK19 CM2350 K105 Engines

The 3910665 screw is a key component in the QSB4.5 CM850 (CM2850), QSC8.3 CM850 (CM2850), and QSK19 CM2350 K105 engines. These engines are engineered for high performance and reliability, and the screw ensures that all parts are securely fastened.

QSK19 CM2350 K144G, QSK50 CM2150 K107, and QSK50 CM2150 MCRS Engines

Finally, the 3910665 screw is used in the QSK19 CM2350 K144G, QSK50 CM2150 K107, and QSK50 CM2150 MCRS engines. These engines are designed for demanding applications, and the screw’s strength and precision are vital for their performance.

Role of Part 3910665 Hexagon Flange Head Cap Screw in Engine Systems

The 3910665 Hexagon Flange Head Cap Screw is instrumental in securing and maintaining the integrity of various engine components. Its application spans across multiple systems, ensuring that parts remain firmly in place under operational stresses.

Air Crossover and Turbocharger Systems

In the air crossover mounting and air crossover tube mounting, the Hexagon Flange Head Cap Screw plays a significant role. It secures the air crossover components, ensuring a stable connection that allows for efficient airflow to the turbocharger. This screw is also utilized in the arrangement and connection of the turbocharger, where it helps maintain the structural integrity and alignment necessary for optimal performance.

Electronic Control Module and Wiring Harness

The screw is employed in the fastening of the electronic control module wiring harness. This ensures that the wiring remains securely attached to the engine control module, preventing any disconnections that could disrupt the electronic signals critical for engine operation.

Fuel and Oil Systems

Within the fuel and oil systems, the Hexagon Flange Head Cap Screw is used to secure the flexplate and flywheel. This is essential for maintaining the precise alignment and balance required for smooth engine operation. Additionally, it is involved in the attachment of the fuel filter and the oil reserve system, ensuring that these components are held firmly in place.

Marine and Heat Shield Applications

In marine applications, the screw is used to secure various components, contributing to the durability and reliability of marine engines in harsh environments. It is also found in heat shield systems, where it helps to maintain the structural integrity of the shield, protecting nearby components from excessive heat.

Water Pump and Cooling Systems

The Hexagon Flange Head Cap Screw is integral in the water pump kit, where it secures the water pump to the engine. This ensures efficient coolant circulation, which is vital for maintaining engine temperature within safe operating limits.

Gear and Instrument Systems

In gear and instrument systems, the screw is used to secure various components, ensuring that they remain in the correct position and function as intended. This includes the attachment of instruments to the engine, providing accurate readings and data for engine monitoring and diagnostics.

The versatile application of the Hexagon Flange Head Cap Screw across these systems underscores its importance in maintaining the structural integrity and operational efficiency of engine components.

Conclusion

The 3910665 Hexagon Flange Head Cap Screw is a critical component in the automotive and heavy-duty truck industries, particularly in Cummins engines. Its robust design, reliable performance, and versatile application make it essential for securing various engine components and ensuring the structural integrity and operational efficiency of engine systems. Proper installation, regular maintenance, and timely troubleshooting are key to maximizing the lifespan and performance of this part.