3902460
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, specifically the 3902460 model by Cummins, plays a significant role in the assembly and maintenance of commercial trucks. This screw is designed to provide secure fastening in heavy-duty truck applications, ensuring the structural integrity and reliable performance of truck components under demanding conditions. Its unique design and construction make it a vital component in various truck assemblies.

Basic Concepts

The Hexagon Flange Head Cap Screw is characterized by its hexagonal head, which allows for efficient tightening using a wrench, and its flange, which provides a larger bearing surface. This design prevents the screw from being driven too deep into the material, offering enhanced stability and load distribution. Typically, these screws are made from materials like alloy steel, which offer high tensile strength and resistance to wear and corrosion, making them suitable for heavy-duty applications ¹.

Purpose and Function

This Cummins part is specifically designed for use in truck operations. It contributes to the secure assembly of truck components by providing a robust fastening solution that can withstand the stresses and vibrations encountered in heavy-duty environments. This screw ensures that components remain firmly in place, which is crucial for maintaining the structural integrity and performance of the truck.

Key Features

Several key features distinguish the 3902460 Hexagon Flange Head Cap Screw. Its hexagonal head facilitates easy and precise tightening with a wrench, reducing the risk of damage to the screw or surrounding components. The flange head offers additional surface area for load distribution, enhancing the screw’s stability and resistance to loosening. Additionally, the cap screw design allows for a flush or countersunk finish, which can improve the aesthetic and functional integration within truck assemblies.

Benefits

The 3902460 Hexagon Flange Head Cap Screw offers several benefits. It provides enhanced fastening security, ensuring that components remain securely attached under heavy-duty conditions. Its design resists loosening due to vibration, which is common in truck operations. Furthermore, the screw’s aesthetic and functional integration within truck assemblies contributes to a cleaner, more professional appearance and improved overall performance.

Troubleshooting and Maintenance

Common issues associated with Hexagon Flange Head Cap Screws include corrosion, stripping, and loosening. Regular inspections and maintenance are recommended to address these issues. Proper torque application during installation is crucial to ensure the screw’s longevity and performance. Additionally, using corrosion-resistant coatings or materials can help prevent rust and extend the screw’s service life ².

Cummins Overview

Cummins Inc. is a leading manufacturer with a rich history in diesel engines and related technologies. The company is renowned for its commitment to quality and innovation in the commercial vehicle industry. Cummins provides a range of reliable components, including the 3902460 Hexagon Flange Head Cap Screw, which is designed to meet the demanding requirements of heavy-duty truck applications.

Cummins Engine Compatibility with Part 3902460

The Hexagon Flange Head Cap Screw part 3902460, manufactured by Cummins, is designed to fit a variety of Cummins engines. This screw is integral for securing components and ensuring the structural integrity of the engine. Below is a detailed breakdown of the engines that are compatible with this part:

15N Series

• 15N CM2380 M104B

4B Series

• 4B3.9

6B Series

• 6B5.9

6C Series

• 6C8.3

B3 Series

• B3.3
• B3.9 G

B4 Series

• B4.5
• B4.5 CM2350 B129B
• B4.5 RGT

B5 Series

• B5.6 CM2670 B152B
• B5.9 CM2670 B166C
• B5.9 G
• B5.9 GAS PLUS CM556

B6 Series

• B6.7 CM2350 B135B
• B6.7 CM2670 B153B
• B6.7 CM2670 B164C
• B6.7 G CMOH6.0 B125
• B6.7S
• C GAS PLUS CM556

D4 Series

• D4.0 CM2620 D103B

F2 Series

• F2.8 CM2620 F135B

F3 Series

• F3.8 CM2350 F120B
• F3.8 CM2350 F128C
• F3.8 CM2620 F137B

This part is meticulously engineered to meet the specific requirements of these engines, ensuring a secure fit and reliable performance across various engine models.

Role of Part 3902460 Hexagon Flange Head Cap Screw in Engine Systems

The 3902460 Hexagon Flange Head Cap Screw is instrumental in securing various components within engine systems, ensuring stability and proper function. Its applications span across multiple critical areas:

• Aftercooler Water Plumbing: This screw is used to fasten fittings and connections, maintaining the integrity of the water flow system which cools the compressed air before it enters the engine.

• Air Cleaner Mounting: It secures the air cleaner to the engine, ensuring a stable and leak-free connection which is essential for efficient air filtration.

• Air Transfer Connection: The screw plays a role in attaching air transfer components, facilitating smooth and uninterrupted air flow within the engine system.

• Alternative Design: In custom or modified engine setups, this screw can be utilized to secure unique components, adapting to various design requirements.

• Auxiliary Cooling System: It is employed to fasten parts of the auxiliary cooling system, enhancing the engine’s thermal management capabilities.

• Auxiliary Pump: The screw is used to mount auxiliary pumps, ensuring they are securely attached and operate efficiently.

• Cam Follower Cover: This component is fastened using the screw, protecting the cam followers and ensuring precise valve operation.

• Corrosion Resistor: It secures corrosion-resistant components, helping to maintain the longevity and performance of the engine.

• Electronic Governor: The screw is utilized to mount the electronic governor, which controls the engine’s speed and ensures smooth operation.

• Engine Instrumentation: It fastens various instrumentation components, allowing for accurate monitoring of engine parameters.

• Filter: The screw is used to secure filters, ensuring they are properly installed and function effectively to remove contaminants.

• Fuel Pump Oil: It mounts the fuel pump oil components, critical for the lubrication and operation of the fuel pump.

• Fuel Pump Mounting: The screw secures the fuel pump to the engine, ensuring stable and reliable fuel delivery.

• Fuel Shutoff Valve: It is used to fasten the fuel shutoff valve, providing a secure connection for safe and controlled fuel management.

• Intercooler: The screw mounts intercooler components, enhancing the engine’s cooling efficiency by reducing the temperature of the compressed air.

• Leak Test Kit: It secures components of the leak test kit, ensuring accurate detection and diagnosis of leaks within the engine system.

• Long Block: The screw is utilized in the assembly of the long block, ensuring all components are securely fastened.

• Oil Cooler Water Plumbing: It fastens fittings and connections in the oil cooler water plumbing, maintaining efficient cooling of the engine oil.

• Oil Fill Arrangement: The screw secures the oil fill arrangement, ensuring a proper and leak-free connection for oil addition.

• Oil Level Gauge: It mounts the oil level gauge, allowing for accurate monitoring of the engine’s oil level.

• Oil Pan: The screw is used to secure the oil pan, ensuring it is properly attached and functions as intended.

• Oil Pan Plumbing: It fastens components of the oil pan plumbing, ensuring efficient oil circulation within the engine.

• Oil Pan Top Level Assembly Adapter: The screw secures this adapter, facilitating the proper assembly and function of the oil pan.

• Oil Top Level Assembly Pan: It mounts the oil top level assembly pan, ensuring all components are securely in place.

• Pressure Regulator Valve: The screw is used to fasten the pressure regulator valve, maintaining consistent pressure within the engine system.

• Water Manifold: It secures the water manifold, ensuring efficient distribution of coolant throughout the engine.

Conclusion

The 3902460 Hexagon Flange Head Cap Screw by Cummins is a critical component in the assembly and maintenance of commercial trucks and various Cummins engines. Its robust design, high tensile strength, and resistance to wear and corrosion make it ideal for heavy-duty applications. Regular maintenance and proper installation techniques are essential to ensure its longevity and performance. This screw plays a vital role in securing numerous engine components, contributing to the overall stability and efficiency of the engine system.