3278480
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3278480, is a specialized fastener produced by Cummins, a leading manufacturer in the heavy-duty truck industry. This screw is designed to meet the rigorous demands of heavy-duty applications, ensuring reliable fastening and secure component integration within truck systems.

Basic Concepts

Hexagon Flange Head Cap Screws are engineered with a hexagonal head and a flanged base. The hexagonal head allows for efficient torque application using standard tools, while the flange provides additional surface area for load distribution and prevents the screw from being driven into the material. These screws play a role in fastening and securing various components, ensuring structural integrity and operational reliability.

Purpose and Role in Truck Operation

This Cummins part is specifically designed for use in heavy-duty trucks. It is employed in applications where secure fastening is required, such as attaching engine components, transmission parts, and chassis elements. This screw supports critical systems by maintaining the alignment and integrity of assembled parts under significant stress and vibration.

Key Features

The 3278480 features a hexagonal head that facilitates easy and precise torque application. The flange at the base of the screw head distributes the load more evenly across the surface, reducing the risk of damage to the fastened material. Additionally, the screw is typically made from high-strength materials, ensuring durability and resistance to corrosion in harsh operating environments.

Benefits

The design of the 3278480 offers several advantages. The hexagonal head allows for efficient and consistent torque application, which is vital for maintaining proper tension in fastened components. The flange feature enhances load distribution, minimizing the risk of the screw pulling through the material. Furthermore, the screw’s material composition provides resistance to loosening, ensuring long-term reliability in demanding applications.

Installation and Usage

Proper installation of the 3278480 is crucial for optimal performance. It is recommended to use the appropriate torque specifications provided by Cummins to ensure the screw is tightened to the correct tension. Best practices include using a torque wrench for accurate application and verifying that the flange is seated properly against the surface to maximize load distribution. Regular inspection of the screw and fastened components is advised to ensure continued integrity.

Troubleshooting and Maintenance

Common issues with the 3278480 may include loosening due to vibration or corrosion. Regular maintenance checks can help identify these problems early. If loosening is detected, re-torquing the screw to the specified levels is recommended. In cases of corrosion, replacing the screw may be necessary to maintain system reliability. Keeping the screw and surrounding areas clean and free of contaminants can also extend the screw’s service life.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for quality and innovation in the heavy-duty truck industry. The company’s extensive product portfolio includes a wide range of components and systems designed to enhance the performance, efficiency, and reliability of heavy-duty vehicles.

Cummins Engine Compatibility with Hexagon Flange Head Cap Screw Part 3278480

The Cummins part 3278480, a Hexagon Flange Head Cap Screw, is a versatile component that fits into various Cummins engine models. This screw is designed to secure different parts within the engine assembly, ensuring structural integrity and proper functioning. Below is a detailed description of how this part integrates with specific Cummins engines.

4B3.9, 6B5.9, 6C8.3, B5.6 CM2670 B152B, B5.9 G, C8.3 G, G5.9, G5.9 CM558

The Hexagon Flange Head Cap Screw part 3278480 is used in these engines to secure various components, including but not limited to, the cylinder head, valve cover, and other critical engine parts. Its flange head design provides a larger bearing surface, which is essential for maintaining the torque and pressure required in these high-performance engines.

ISB CM550, ISC CM554, ISC CM850, ISL CM554, ISL9 CM2150 SN, ISX CM570

In the ISB, ISC, and ISL series engines, the part 3278480 is used to fasten components such as the turbocharger housing, intake manifold, and other critical assemblies. The screw’s robust design ensures that it can withstand the high temperatures and pressures typical of these engines.

K50, QSB5.9 44 CM550, QSK38 CM2150 MCRS, QSK38 CM850 MCRS, QSK45 CM500, QSK50 CM2150 MCRS, QSK50 CM2350 K108, QSK60 CM500, QSK60 CM850 MCRS, QSK60 G CM2358 K110, QSK60G

For the QSK series engines, the Hexagon Flange Head Cap Screw part 3278480 is employed in securing the engine block, cylinder head, and other heavy-duty components. The flange head provides a stable and secure fastening, which is crucial for the longevity and performance of these engines.

The part 3278480 is a critical component in the assembly and maintenance of these Cummins engines, ensuring that all fastened parts remain securely in place under the demanding conditions these engines operate in.

Role of Part 3278480 Hexagon Flange Head Cap Screw in Engine Systems

The part 3278480 Hexagon Flange Head Cap Screw is integral to the assembly and securement of various engine components, ensuring the structural integrity and proper functioning of the engine system.

Accessory Support

This screw is utilized in the accessory support to firmly attach accessories to the engine, ensuring they remain in place under operational conditions.

Air Cleaner Plumbing

In the air cleaner plumbing system, the Hexagon Flange Head Cap Screw secures components, maintaining the airtight seal necessary for efficient air filtration.

Air Transfer Tube

For the air transfer tube, this screw ensures that the tube is securely fastened to the engine, preventing any potential leaks or disconnections.

Campaign Kit

Within campaign kits, which often include modifications or upgrades to the engine, the screw is used to attach new components securely.

Cylinder Block Cover

The screw plays a role in attaching the cylinder block cover, ensuring that the cover is tightly sealed to protect the internal components of the engine.

Engine Control Module

In the mounting of the engine control module, the screw ensures that the module is securely fastened, protecting it from vibrations and ensuring reliable operation.

Engine Lubrication Primer Arrangement

For the engine lubrication primer arrangement, the screw is used to secure components, ensuring the primer system functions correctly to lubricate the engine before start-up.

Fan Drive

In the fan drive system, the screw secures components, ensuring the fan operates efficiently to cool the engine.

Front Engine Support

The screw is crucial in the front engine support, where it secures the engine to the vehicle’s frame, ensuring stability and proper alignment.

Front Gear Cover

For the front gear cover, the screw ensures that the cover is securely attached, protecting the internal gear components.

Front Gear Housing

In the front gear housing, the screw is used to secure the housing, maintaining the integrity of the gear system.

Fuel Drain Plumbing

The screw secures components in the fuel drain plumbing, ensuring that the system remains sealed and functions correctly.

Fuel Filter

In the fuel filter assembly, the screw ensures that the filter is securely mounted, preventing any leaks or disconnections.

Fuel Pump

For the fuel pump, the screw is used to secure the pump to the engine, ensuring it remains in place and operates efficiently.

Fuel Pump Coupling

In the fuel pump coupling, the screw ensures that the coupling is securely attached, maintaining the integrity of the fuel delivery system.

Fuel Transfer Pump

The screw secures components in the fuel transfer pump, ensuring efficient and reliable fuel transfer.

Gear Cover Mounting

For gear cover mounting, the screw ensures that the cover is securely attached, protecting the internal gear components.

Guard Package

In the guard package, the screw is used to secure guards, protecting sensitive engine components from debris and damage.

Intercooler

For the intercooler, the screw ensures that the intercooler is securely mounted, maintaining efficient cooling of the air charge.

Starting Motor Mounting

In the starting motor mounting, the screw ensures that the starting motor is securely attached, ensuring reliable engine start-up.

Thermostat Housing

For the thermostat housing, the screw ensures that the housing is securely attached, maintaining the integrity of the cooling system.

Thermostat Housing Plumbing

In the thermostat housing plumbing, the screw secures components, ensuring the cooling system remains sealed and functions correctly.

Turbocharger Arrangement

For the turbocharger arrangement, the screw ensures that the turbocharger is securely mounted, maintaining efficient air compression.

Turbocharger Coolant Plumbing

In the turbocharger coolant plumbing, the screw secures components, ensuring the cooling system remains sealed and functions correctly.

Turbocharger Oil Plumbing

For the turbocharger oil plumbing, the screw ensures that the oil system components are securely attached, maintaining the lubrication and cooling of the turbocharger.

Conclusion

The 3278480 Hexagon Flange Head Cap Screw is a vital component in the heavy-duty truck industry, providing reliable fastening and secure component integration within truck systems. Its design, featuring a hexagonal head and flanged base, ensures efficient torque application and enhanced load distribution. This screw is integral to the assembly and maintenance of various Cummins engines, securing critical components and ensuring the structural integrity and proper functioning of the engine system. Proper installation, regular maintenance, and timely troubleshooting are essential to maximize the performance and longevity of this critical fastener.