4901349
Hexagon Flange Head Cap Screw
Cummins®

The Hexagonal Flange Head Cap Screw, identified by part number 4901349, is a component manufactured by Cummins. This screw plays a significant role in the maintenance and operation of commercial trucks. Cummins, a well-respected name in the automotive industry, ensures that this part meets the rigorous demands of heavy-duty applications.

Basic Concepts

A Hexagonal Flange Head Cap Screw is a type of fastener characterized by its hexagonal head and a flange that sits against the surface being fastened. This design allows for efficient torque application and provides a larger bearing surface, which helps distribute the load more evenly ¹. Within a truck’s mechanical system, this screw is used to secure various components, ensuring they remain firmly in place under operational stress.

Purpose and Role in Truck Operation

The 4901349 Hexagonal Flange Head Cap Screw serves a specific purpose in commercial trucks by securing critical components and contributing to the structural integrity of the vehicle. It is often used in applications where vibration and dynamic loads are common, such as in the engine compartment or chassis. By providing a secure connection, this screw helps maintain the alignment and functionality of attached parts, which is vital for the truck’s overall performance and safety ².

Key Features

The 4901349 Hexagonal Flange Head Cap Screw features a hexagonal flange head design, which allows for easy application of torque using standard tools. The screw is typically made from high-strength materials, such as alloy steel, to ensure durability and resistance to wear. Its flange head design provides an increased contact area, which enhances the screw’s ability to withstand high loads and reduces the risk of stripping or loosening over time.

Benefits

Using the 4901349 Hexagonal Flange Head Cap Screw offers several benefits. The design of the screw provides improved fastening strength, making it less likely to loosen under vibration or dynamic loads. Its resistance to corrosion and wear ensures long-term reliability, even in harsh operating environments. Additionally, the screw’s compatibility with various truck components makes it a versatile choice for different fastening applications.

Installation and Usage

Proper installation of the 4901349 Hexagonal Flange Head Cap Screw is crucial for ensuring a secure and reliable connection. It is recommended to use the appropriate torque specifications provided by the manufacturer to avoid over-tightening or under-tightening. Standard tools, such as a torque wrench, should be used to achieve the correct torque. Following best practices, such as cleaning the mating surfaces and using the correct grade of lubricant, can further enhance the screw’s performance and longevity ³.

Troubleshooting and Maintenance

Common issues with the 4901349 Hexagonal Flange Head Cap Screw may include loosening or corrosion. Regular inspection and maintenance can help identify and address these problems early. If loosening is detected, re-torque the screw to the manufacturer’s specifications. In cases of corrosion, cleaning the affected area and applying a suitable anti-corrosion treatment can help prolong the screw’s lifespan. Routine checks during maintenance intervals are recommended to ensure ongoing reliability.

Cummins Overview

Cummins is a renowned manufacturer in the automotive industry, known for its high-quality components for commercial trucks. With a history of innovation and commitment to excellence, Cummins has established a strong reputation for producing reliable and durable parts. Their focus on quality and performance ensures that components like the 4901349 Hexagonal Flange Head Cap Screw meet the demanding requirements of heavy-duty applications.

Hexagonal Flange Head Cap Screw (Part 4901349) in Cummins Engines

The Cummins Hexagonal Flange Head Cap Screw, part number 4901349, is a critical component in several Cummins engine models. This part is designed to provide secure fastening in various engine applications, ensuring the integrity and reliability of the engine assembly.

A1400 and A1700 Engines

In the A1400 and A1700 engines, the 4901349 screw is utilized in areas where a strong, reliable fastening solution is required. These engines, known for their robust performance, benefit from the precision and durability of the flange head cap screw. The screw’s hexagonal flange head allows for easy and efficient tightening with a wrench, making it ideal for applications where frequent assembly and disassembly are necessary.

A2000 and A2300 Engines

The A2000 and A2300 engines also incorporate the 4901349 screw in their design. These engines, which are part of Cummins’ higher power output range, require components that can withstand significant stress and pressure. The flange head cap screw’s design ensures a tight and secure fit, which is crucial for maintaining the structural integrity of the engine under high-load conditions.

Common Applications

Across the A1400, A1700, A2000, and A2300 engines, the 4901349 screw is commonly used in the following applications:

• Cylinder Head Fastening: Ensuring the cylinder head is securely attached to the engine block.
• Turbocharger Mounting: Providing a reliable connection for turbocharger components.
• Exhaust Manifold Attachment: Securing the exhaust manifold to the engine, which is critical for efficient exhaust gas flow.

The use of the 4901349 screw in these engines highlights its importance in maintaining the overall performance and longevity of the engine. Its design and material properties make it a preferred choice for critical fastening applications in Cummins engines.

Role of Part 4901349 Hexagonal Flange Head Cap Screw in Engine Systems

The part 4901349 Hexagonal Flange Head Cap Screw is integral in securing various components within engine systems, ensuring both stability and efficient operation.

Front Gear Cover

In the assembly of the front gear cover, the 4901349 screw plays a significant role. It is used to fasten the front gear cover to the engine block, maintaining the alignment and integrity of the gear system. This secure attachment is essential for the proper functioning of the gear cover, which houses critical components such as gears, shafts, and bearings. The screw’s hexagonal flange head design allows for easy tightening and removal, facilitating maintenance and repair processes.

By ensuring a tight and consistent fit, the 4901349 screw helps prevent leaks and reduces the risk of component misalignment, which could lead to increased wear and potential failure of the gear system. Its application in this context underscores the importance of precise fastening in maintaining the overall performance and reliability of the engine.

Conclusion

The 4901349 Hexagonal Flange Head Cap Screw is a vital component in the maintenance and operation of commercial trucks and Cummins engines. Its design, featuring a hexagonal flange head, ensures efficient torque application and provides a larger bearing surface for even load distribution. The screw’s high-strength material and resistance to corrosion and wear make it a reliable choice for securing critical components under dynamic loads and harsh environments. Proper installation and regular maintenance are essential to ensure the screw’s longevity and the overall performance of the vehicle or engine system.