4900770
Hexagon Flange Head Cap Screw
Cummins®

The Cummins part number 4900770, known as the Hexagon Flange Head Cap Screw, is a vital component in the maintenance and assembly of commercial trucks. Manufactured by Cummins, a leader in the automotive industry, this part is renowned for its robust design and reliable performance in heavy-duty applications ¹.

Basic Concepts

A Hexagon Flange Head Cap Screw is a fastener with a hexagonal head and a flange beneath it. This design facilitates efficient tightening and loosening with a wrench or socket, while the flange provides a larger bearing surface to distribute the load evenly across the fastened material ². In mechanical systems, these screws are crucial for securing components, ensuring stability and integrity under various operational conditions.

Purpose and Role in Truck Operation

The 4900770 Hexagon Flange Head Cap Screw is essential in commercial trucks for securing critical components subjected to significant stress and vibration. Its applications include fastening engine parts and securing chassis components. By providing a secure and stable connection, this screw is vital for maintaining the structural integrity and functionality of truck components, ensuring safe and efficient operation ³.

Key Features

The 4900770 Hexagon Flange Head Cap Screw features a hexagonal head for easy and precise tightening and a flange that increases the bearing surface area, reducing the risk of damage to the fastened material. Made from high-strength materials, it can withstand the rigors of commercial truck use. Additionally, it may include a corrosion-resistant coating to extend its service life in harsh environments ⁴.

Benefits

Using the 4900770 Hexagon Flange Head Cap Screw offers benefits such as improved fastening security, resistance to loosening due to vibration, and enhanced load distribution. These attributes contribute to the overall reliability and safety of truck operations by ensuring that critical components remain securely fastened under various conditions.

Installation and Usage Guidelines

Proper installation of the 4900770 Hexagon Flange Head Cap Screw is crucial for optimal performance and longevity. It is recommended to use appropriate tools, such as a torque wrench, to achieve the specified torque settings. This ensures the screw is tightened to the correct level, providing a secure connection without over-tightening, which could lead to damage. Following manufacturer guidelines for installation and usage will help maintain the screw’s integrity and performance.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws include corrosion, loosening, or damage. Regular inspection and maintenance can help identify and address these problems early. Troubleshooting may involve checking for proper torque, ensuring the screw is the correct size for the application, and inspecting for signs of wear or corrosion. Maintenance practices, such as applying a corrosion-resistant coating or replacing damaged screws, can help ensure continued functionality and safety.

Manufacturer - Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a strong reputation in the automotive industry, Cummins is committed to producing high-quality components that meet the demands of heavy-duty applications. The 4900770 Hexagon Flange Head Cap Screw exemplifies Cummins’ dedication to quality and performance in the commercial trucking sector.

Role of Part 4900770 Hexagon Flange Head Cap Screw in Engine Systems

The 4900770 Hexagon Flange Head Cap Screw is integral to the assembly and functionality of various engine components. It is commonly used to secure and maintain the structural integrity of key parts within the engine system.

Drive System Integration

In the drive system, the 4900770 screw is utilized to fasten components that transmit power from the engine to other parts of the machinery. This includes securing the front gear train accessory, which drives ancillary components such as the alternator, water pump, and power steering pump. The screw ensures these accessories remain firmly attached to the drive system, allowing for efficient power transmission and operation.

Front Gear Train Accessory Drive

Within the front gear train accessory drive, the 4900770 screw plays a significant role in attaching the accessory drive to the engine’s front gear train. This connection is vital for the synchronized operation of the accessories driven by the gear train. The screw’s design allows for a secure fit, preventing any slippage or misalignment that could lead to inefficient operation or damage to the gear train.

Flywheel Housing

The flywheel housing is another area where the 4900770 screw is extensively used. It secures the housing to the engine block, ensuring that the flywheel—which stores rotational energy and smooths out the power delivery from the engine—is held in place. This is essential for maintaining the balance and efficiency of the engine’s power delivery system.

Housing and Flywheel

Finally, the screw is employed in the general housing of the engine, particularly in areas where components need to be tightly secured to prevent vibrations and ensure smooth operation. In the context of the flywheel, the screw helps in attaching the flywheel to the crankshaft, ensuring that the rotational energy is effectively transferred from the engine to the transmission system.

Conclusion

The 4900770 Hexagon Flange Head Cap Screw is a fundamental component in the assembly and maintenance of various engine systems. Its robust design and reliable performance ensure that engine components remain securely fastened, contributing to the efficient and reliable operation of commercial trucks.