3089259
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3089259, is a component manufactured by Cummins, a leader in the automotive and heavy-duty truck industries. This screw is significant in heavy-duty trucks due to its robust design and reliable performance, contributing to the overall efficiency and durability of the vehicle.

Basic Concepts

Hexagon Flange Head Cap Screws are designed with a hexagonal head and a flange that provides a larger bearing surface. This design allows for easier installation and removal using standard tools, while the flange distributes the load more evenly, reducing the risk of damage to the fastened material ¹. In the automotive industry, these screws are commonly used in applications requiring high strength and resistance to vibration, such as in engine components, chassis assemblies, and various structural applications.

Purpose and Role in Truck Operation

This Cummins part plays a specific role in heavy-duty trucks by securing critical components that are subject to significant stress and vibration. Its design ensures a secure fit that maintains integrity under demanding conditions, contributing to the overall functionality and performance of the vehicle. By providing a stable connection between parts, it helps in maintaining the structural integrity and operational efficiency of the truck.

Key Features

The 3089259 features a hexagonal flange head, which offers several advantages. The hexagonal shape allows for efficient torque application, reducing the likelihood of cam-out during installation. The flange provides additional surface area, enhancing the screw’s load-bearing capacity and distributing stress more evenly. Additionally, the screw is made from high-quality materials, ensuring durability and resistance to corrosion, which is vital for long-term performance in harsh operating environments.

Benefits

The benefits of using this part include enhanced durability, corrosion resistance, and ease of installation. These attributes contribute to improved performance and reliability for heavy-duty trucks. The screw’s robust construction ensures it can withstand the rigors of heavy-duty applications, while its corrosion-resistant properties help protect against environmental damage. The ease of installation reduces maintenance time and labor costs, making it a practical choice for fleet operations.

Troubleshooting and Maintenance

Common issues with the 3089259 may include loosening, corrosion, or damage. To address these problems, regular inspections should be conducted to ensure the screw remains tight and free of corrosion. If corrosion is detected, the affected area should be cleaned, and a corrosion-resistant coating may be applied. Damaged screws should be replaced promptly to maintain the integrity of the fastened components. Following best practices for maintenance will help ensure optimal performance and longevity of the screw ².

Installation Procedures

Proper installation of the 3089259 involves several steps to ensure a secure and reliable connection. Begin by cleaning the installation area to remove any debris or corrosion. Use the appropriate tool to drive the screw into place, ensuring it is aligned correctly with the fastened components. Apply the specified torque to achieve the recommended tightening force, which ensures the screw is secure without over-tightening. Special considerations, such as using thread locker or anti-seize compound, may be necessary depending on the application to enhance performance and prevent issues such as galling or seizing.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and quality, Cummins has established a strong reputation in the automotive industry. The company is committed to providing reliable and efficient solutions that meet the needs of its customers, ensuring satisfaction and trust in its products. Cummins’ dedication to quality and customer service is evident in its extensive product offerings and continued investment in research and development ³.

Hexagon Flange Head Cap Screw 3089259 in Cummins Engines

The Hexagon Flange Head Cap Screw part number 3089259, manufactured by Cummins, is a critical component in various Cummins engine models. This screw is integral to the assembly and maintenance of these engines, ensuring secure fastening and structural integrity.

ISX12 Series

In the ISX12 series engines, such as the ISX12 CM2350 X102, ISX12 G CM2180 EJ, and ISX12/ISX11.9 CM2250, the 3089259 screw is used in several key applications. These include securing various engine covers and housings, ensuring that components remain tightly fastened under operational stresses.

QSK Series

For the QSK series engines, the 3089259 screw is utilized across multiple models. In engines like the QSK45 CM500, QSK50 CM2150 MCRS, QSK60 CM500, QSK60 CM850 MCRS, QSK60 G CM2358 K110, and QSK60G, this screw plays a vital role in fastening components such as turbocharger housings, intake manifolds, and other critical engine parts. Its design ensures that these components are held securely, contributing to the overall performance and longevity of the engine.

QSK95 Series

In the QSK95 series engines, including the QSK95 CM2350 K111 and QSK95 CM2350 K113, the 3089259 screw is similarly essential. It is used to fasten various engine components, ensuring that the engine maintains its structural integrity and operational efficiency.

QSV Series

The QSV series engines, such as the QSV91-G4 CM558/CM700 V102 and QSV91G, also incorporate the 3089259 screw in their design. This screw is used in fastening components that are critical to the engine’s operation, ensuring that all parts are securely held together.

The use of the 3089259 in these Cummins engines underscores its importance in maintaining the structural integrity and operational efficiency of the engine. Its design and material ensure that it can withstand the rigors of engine operation, providing reliable fastening in demanding environments.

Role of Part 3089259 in Engine Systems

The 3089259 is integral to the assembly and functionality of various engine components. Its robust design ensures secure fastening, which is essential for maintaining the integrity and performance of the engine system.

Block and Cylinder Assembly

In the block and cylinder assembly, the Hexagon Flange Head Cap Screw is used to fasten critical components such as the cylinder head to the engine block. This secure attachment is vital for maintaining the structural integrity of the engine, ensuring that the combustion process occurs within a sealed environment.

Compressor and Refrigerant System

Within the compressor and refrigerant system, these screws are employed to secure the compressor housing. The secure fastening provided by the Hexagon Flange Head Cap Screw ensures that the compressor operates efficiently, maintaining the proper compression of refrigerant gases essential for cooling the engine.

Cooler and Engine Oil System

In the cooler and engine oil system, these screws play a role in attaching the oil cooler to the engine block or other components. This secure attachment is necessary for efficient heat exchange, which helps in maintaining optimal engine oil temperature, thereby enhancing engine performance and longevity.

Crankshaft and Bearings

The Hexagon Flange Head Cap Screw is also utilized in securing the crankshaft to the engine block and in attaching bearing caps. This ensures that the crankshaft rotates smoothly within the engine, reducing friction and wear on the bearings, which is essential for the engine’s smooth operation.

Cylinder Block

In the cylinder block, these screws are used to fasten various components such as the cylinder head and other attachments. This secure fastening is crucial for maintaining the structural stability of the cylinder block, ensuring efficient combustion and power delivery.

Drive and Front Gear Train Accessory

For the drive and front gear train accessory, the Hexagon Flange Head Cap Screw is used to secure the front gear train accessory drive. This ensures that the accessory drive operates efficiently, powering components such as the alternator, water pump, and other essential engine accessories.

Fuel Pump

In the fuel pump assembly, these screws are used to secure the fuel pump housing to the engine block or other mounting points. This secure attachment ensures that the fuel pump operates efficiently, delivering the precise amount of fuel needed for combustion.

Gear and Camshaft

The Hexagon Flange Head Cap Screw is also employed in securing the gear and camshaft to the engine block or other components. This ensures that the camshaft rotates smoothly, opening and closing the valves at the correct times, which is essential for efficient engine operation.

Gear Housing

In the gear housing, these screws are used to secure the housing to the engine block or other components. This ensures that the gear housing remains intact, protecting the gears and other internal components from damage.

Housing and Front Gear

For the housing and front gear, the Hexagon Flange Head Cap Screw is used to secure the front gear to the housing. This ensures that the front gear operates efficiently, driving the accessory components that are essential for engine operation.

Housing and Thermostat

In the housing and thermostat assembly, these screws are used to secure the thermostat housing to the engine block. This ensures that the thermostat operates efficiently, regulating the flow of coolant to maintain optimal engine temperature.

Support and Front Engine

Finally, in the support and front engine components, the Hexagon Flange Head Cap Screw is used to secure various support brackets and front engine components. This ensures that these components remain firmly in place, contributing to the overall stability and performance of the engine.

Conclusion

The 3089259 Hexagon Flange Head Cap Screw is a critical component in heavy-duty trucks and Cummins engines, providing secure fastening and contributing to the structural integrity and operational efficiency of the vehicle. Its robust design, ease of installation, and resistance to corrosion make it a reliable choice for demanding applications. Regular maintenance and proper installation procedures are essential to ensure the longevity and performance of this part.