4903110
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 4903110, is a component manufactured by Cummins, a well-established name in the commercial truck industry. This screw is integral to the mechanical systems of commercial trucks, providing secure fastening and contributing to the overall structural integrity of the vehicle. Its design and functionality are tailored to meet the demanding requirements of heavy-duty applications ¹.

Basic Concepts and Functionality

Hexagon Flange Head Cap Screws are designed to offer robust fastening solutions in mechanical systems. The fundamental principle behind these screws involves the use of a hexagonal head, which allows for efficient torque application using standard tools. The flange, a flat, circular plate at the head of the screw, distributes the load over a larger area, reducing the risk of damage to the fastened material. This design ensures that the screw remains securely in place, even under significant stress ².

Purpose and Role in Truck Operation

This Cummins part plays a specific role in truck mechanics by securing various components and contributing to the structural integrity of the vehicle. It is commonly used in applications where high torque and resistance to loosening are required. Typical applications include fastening engine components, securing chassis parts, and attaching body panels. Its role is vital in ensuring that these components remain firmly in place, even under the harsh conditions encountered in commercial trucking ³.

Key Features

The 4903110 Hexagon Flange Head Cap Screw boasts several key features that enhance its performance and reliability. The hexagonal head allows for easy and efficient application of torque using common tools. The flange provides additional surface area for load distribution, minimizing the risk of damage to the fastened material. The screw’s threading is designed to ensure a secure fit, while the material used in its construction offers durability and resistance to corrosion, making it suitable for use in demanding environments.

Benefits

Using the 4903110 Hexagon Flange Head Cap Screw offers several advantages. Its design allows for increased torque application, ensuring that components are securely fastened. The flange contributes to resistance against loosening, maintaining the integrity of the fastening over time. Additionally, the screw’s durability in harsh environments makes it a reliable choice for commercial truck applications.

Installation and Usage Guidelines

Proper installation of the Hexagon Flange Head Cap Screw is crucial for ensuring a secure and lasting fit. It is recommended to use the appropriate tools for torque application to avoid over-tightening or under-tightening. Following manufacturer guidelines for torque specifications ensures that the screw is installed correctly. Additionally, using thread lubricant can facilitate easier installation and help prevent galling.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws include loosening over time and corrosion. Regular inspection and maintenance can help identify these issues early. To prolong the lifespan of the screw, it is important to ensure that it is properly torqued and that the fastened components are not subjected to excessive vibration or stress. If corrosion is detected, the screw should be replaced to maintain the integrity of the fastening.

Cummins: Manufacturer Overview

Cummins Inc. is a renowned manufacturer in the commercial truck industry, known for its commitment to quality and innovation. With a rich history and a strong reputation, Cummins offers a wide range of products designed to meet the needs of the commercial trucking sector. Their focus on quality ensures that components like the 4903110 Hexagon Flange Head Cap Screw are reliable and perform well under demanding conditions.

Regulatory and Safety Considerations

The use of Hexagon Flange Head Cap Screws in commercial trucks is subject to various regulatory standards. These standards ensure that the screws meet specific performance and safety criteria. It is important to adhere to these regulations to ensure the safe and reliable operation of commercial vehicles. Safety protocols for handling and installing the screw should be followed to prevent injury and ensure proper installation.

Case Studies and Real-World Applications

The 4903110 Hexagon Flange Head Cap Screw has been utilized in various truck models, demonstrating its versatility and reliability. Fleet operators and mechanics have reported positive experiences with the part, highlighting its durability and ease of installation. These real-world applications underscore the screw’s importance in maintaining the structural integrity and performance of commercial trucks.

Cummins Engine Compatibility with Hexagon Flange Head Cap Screw Part 4903110

The Cummins part number 4903110, a Hexagon Flange Head Cap Screw, is a critical component in the assembly and maintenance of various Cummins engines. This screw is designed to provide secure fastening in applications where a strong and reliable connection is essential. Below is a detailed overview of the compatibility of this screw with different Cummins engine models.

4B3.9, 6B5.9, B3.3, B4.5 CM2350 B129B, B5.9 GAS PLUS CM556, B6.7 CM2670 B164C

The Hexagon Flange Head Cap Screw part 4903110 is suitable for use in the 4B3.9, 6B5.9, B3.3, B4.5 CM2350 B129B, B5.9 GAS PLUS CM556, and B6.7 CM2670 B164C engines. These engines, while differing in displacement and specific configurations, share common design elements that benefit from the robust fastening provided by this screw. Its use in these engines ensures that critical components remain securely attached, enhancing overall engine reliability and performance.

D4.0 CM2620 D103B, F3.8 CM2350 F120B, F3.8 CM2350 F128C, F3.8 CM2620 F137B, F3.8 F102

The part 4903110 is also compatible with the D4.0 CM2620 D103B, F3.8 CM2350 F120B, F3.8 CM2350 F128C, F3.8 CM2620 F137B, and F3.8 F102 engines. These engines, which vary in their specific configurations and applications, all benefit from the secure fastening provided by this screw. The flange head design ensures a tight and even distribution of pressure, which is crucial for maintaining the integrity of engine components under operational stress.

F4.5 CM2620 F139B, F4.5 CM2620 F141C, ISB/ISD4.5 CM2150 B119, ISB/ISD6.7 CM2150 SN, ISB3.9 CM2220 B107, ISB4.5 CM2350 B104, ISB5.9 CM2880 B127, ISBE CM2150, ISBE4 CM850

The Hexagon Flange Head Cap Screw part 4903110 is also applicable to the F4.5 CM2620 F139B, F4.5 CM2620 F141C, ISB/ISD4.5 CM2150 B119, ISB/ISD6.7 CM2150 SN, ISB3.9 CM2220 B107, ISB4.5 CM2350 B104, ISB5.9 CM2880 B127, ISBE CM2150, and ISBE4 CM850 engines. These engines, which encompass a range of power outputs and configurations, all benefit from the reliable fastening provided by this screw. Its use in these engines ensures that components are held firmly in place, contributing to the overall durability and performance of the engine.

ISF3.8 CM2220 AN, ISF3.8 CM2220 F103, ISF3.8 CM2350 F109, ISF4.5 CM2220 F123, ISV (Nissan)

Lastly, the part 4903110 is compatible with the ISF3.8 CM2220 AN, ISF3.8 CM2220 F103, ISF3.8 CM2350 F109, ISF4.5 CM2220 F123, and ISV (Nissan) engines. These engines, which may have specific design requirements, also benefit from the secure fastening provided by this screw. The flange head design ensures that the screw provides a strong and reliable connection, which is essential for maintaining the integrity of engine components in these applications.

Role of Part 4903110 Hexagon Flange Head Cap Screw in Engine Systems

The part 4903110 Hexagon Flange Head Cap Screw is integral in securing and maintaining the structural integrity of various engine components. Its robust design ensures reliable fastening in high-stress environments.

Air Compressor

In air compressor systems, the Hexagon Flange Head Cap Screw is utilized to secure the compressor housing to the engine block. This ensures that the compressor operates efficiently without any misalignment or undue stress on the mounting points.

Air Intake Connection

For the air intake connection, this screw plays a role in fastening the intake manifold to the cylinder head. Proper sealing and alignment are essential for optimal airflow into the engine, directly influencing combustion efficiency.

Alternator Mounting

When mounting the alternator, the Hexagon Flange Head Cap Screw is employed to secure the alternator to the engine bracket. This ensures that the alternator remains stable during operation, providing consistent electrical output.

Camshaft

In camshaft applications, this screw is used to fasten the camshaft housing or timing cover. Accurate positioning and secure fastening are vital for maintaining proper valve timing and engine performance.

Connecting Rod and Piston

Although less common, in some engine designs, the Hexagon Flange Head Cap Screw may be used to secure components of the connecting rod or piston assembly, ensuring that these critical moving parts remain aligned and function smoothly.

Cylinder Head

The screw is often used to secure the cylinder head to the engine block. This application requires precise torque to maintain proper sealing and prevent leaks, which is essential for engine efficiency and longevity.

Engine Balancer

For engine balancers, the Hexagon Flange Head Cap Screw helps in attaching the balancer to the crankshaft or engine block. This ensures that the balancer effectively reduces vibrations, leading to smoother engine operation.

Engine Fan

In engine fan assemblies, this screw is used to secure the fan to the fan drive or engine housing. Proper attachment is necessary to ensure the fan operates efficiently, providing adequate cooling to the engine.

Exhaust Recirculation Air Plumbing

For exhaust recirculation systems, the screw is employed to fasten plumbing components, ensuring that the recirculated exhaust gases are properly directed back into the intake system without leaks.

Fan Drive

The Hexagon Flange Head Cap Screw is used in fan drive mechanisms to secure the fan drive to the engine. This ensures that the fan drive operates smoothly, contributing to effective engine cooling.

Fan Pilot Spacer

In applications involving fan pilot spacers, this screw is used to secure the spacer in place, maintaining the correct distance and alignment between the fan and the engine components.

Front Drive Adapter

For front drive adapters, the screw is utilized to secure the adapter to the engine or transmission. This ensures that the drive components are properly aligned and function efficiently.

Fuel Shutoff Valve

In fuel shutoff valve installations, the Hexagon Flange Head Cap Screw is used to secure the valve to the engine or fuel line. This ensures that the valve operates correctly, allowing for safe and controlled fuel flow.

Heat Shield Arrangement

For heat shield arrangements, the screw is employed to secure the heat shields in place, protecting nearby components from excessive heat generated by the engine.

Injector

In fuel injector systems, the screw is used to secure the injector to the engine block or cylinder head. This ensures that the injector operates within the correct parameters, contributing to efficient fuel delivery.

Injector Plumbing

For injector plumbing, the screw is utilized to secure plumbing components, ensuring that fuel lines are properly attached and sealed, preventing leaks and ensuring consistent fuel pressure.

Long Block Kit

In long block kit assemblies, the Hexagon Flange Head Cap Screw is used in various applications to secure components such as the cylinder head, intake manifold, and other critical parts, ensuring the long block operates as a cohesive unit.

Oil Level Gauge

For oil level gauge installations, the screw is used to secure the gauge to the engine block. This ensures accurate oil level readings, which are essential for maintaining engine health.

Performance Parts

In performance part installations, the screw is often used to secure aftermarket components such as upgraded intake manifolds, cylinder heads, or other performance-enhancing parts, ensuring they are properly attached and function effectively.

Refrigerant Compressor

In refrigerant compressor systems, the screw is used to secure the compressor to the engine or mounting bracket. This ensures that the compressor operates efficiently, providing effective cooling for the engine and other components.

Thermostat Housing

For thermostat housing installations, the screw is used to secure the housing to the engine block or cylinder head. This ensures that the thermostat operates within the correct temperature range, maintaining optimal engine operating conditions.

Thermostat Housing Arrangement

In thermostat housing arrangements, the screw is employed to secure various components of the housing, ensuring that the thermostat and related parts function correctly and maintain engine temperature.

Water Outlet Connection

For water outlet connections, the screw is used to secure the outlet to the engine block or cylinder head. This ensures that coolant flows efficiently through the engine, maintaining proper temperature regulation.

Water Pump

In water pump installations, the screw is used to secure the pump to the engine block or timing cover. This ensures that the water pump operates effectively, providing consistent coolant circulation.

Water Pump Kit

For water pump kit assemblies, the screw is utilized in various applications to secure components such as the pump housing, impeller, and gaskets, ensuring the water pump kit functions as a cohesive unit and maintains efficient coolant flow.

Conclusion

The 4903110 Hexagon Flange Head Cap Screw is a vital component in the maintenance and operation of commercial trucks and Cummins engines. Its robust design, ease of installation, and compatibility with a wide range of engine models make it an essential part for ensuring the structural integrity and performance of these vehicles. Proper installation, regular maintenance, and adherence to safety protocols are crucial for maximizing the lifespan and effectiveness of this screw in demanding applications.