4001226
Hexagon Flange Head Cap Screw
Cummins®

The Cummins 4001226 Hexagon Flange Head Cap Screw is a specialized fastener designed for use in commercial trucks. It is engineered to provide secure and reliable fastening in various applications, contributing to the overall performance and durability of truck components. This screw is commonly utilized in the assembly and maintenance of truck parts, ensuring that critical components remain firmly in place under demanding conditions.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by its hexagonal head and flanged base. The hexagonal head allows for efficient torque application using standard tools, while the flange provides additional surface area to distribute load and prevent the screw from sinking into softer materials. This design enhances the screw’s functionality in fastening applications, making it suitable for a wide range of industrial uses ¹.

Purpose and Role in Truck Operation

The 4001226 Hexagon Flange Head Cap Screw plays a significant role in the operation and maintenance of commercial trucks by securing various components and assemblies. It is often used in applications where vibration resistance and secure fastening are required, such as in the attachment of engine components, chassis parts, and other critical truck systems. The screw’s design helps maintain the integrity of these connections, ensuring that trucks operate safely and efficiently ².

Key Features

The Cummins 4001226 Hexagon Flange Head Cap Screw features a hexagonal head that facilitates easy and precise tightening with standard tools. The flange at the base of the screw provides additional stability and load distribution, reducing the risk of the screw pulling through the material. Additionally, the screw is manufactured from high-quality materials, ensuring durability and resistance to corrosion, which is vital for long-term performance in the demanding environment of commercial trucking.

Benefits

Using the 4001226 Hexagon Flange Head Cap Screw offers several advantages. The hexagonal head design allows for efficient and consistent torque application, reducing the likelihood of over-tightening or under-tightening. The flange enhances the screw’s resistance to vibration, maintaining a secure connection even under dynamic conditions. Furthermore, the ease of installation and removal makes it a practical choice for both initial assembly and maintenance tasks.

Installation Process

Proper installation of the 4001226 Hexagon Flange Head Cap Screw is crucial for optimal performance. Begin by ensuring that the mating surfaces are clean and free of debris. Use a torque wrench to apply the recommended torque specification, avoiding excessive force that could damage the screw or the material. It is also important to periodically check the tightness of the screw, especially in applications subject to vibration, to ensure continued secure fastening.

Common Applications

The 4001226 Hexagon Flange Head Cap Screw is commonly used in various applications within commercial truck maintenance and repair. Typical uses include securing engine components, attaching chassis parts, and fastening body panels. Its versatility and reliability make it a preferred choice for many critical fastening tasks in the trucking industry.

Troubleshooting and Maintenance

Regular inspection and maintenance of the 4001226 Hexagon Flange Head Cap Screw are important to ensure ongoing performance. Look for signs of wear, corrosion, or loosening, which may indicate the need for replacement or re-tightening. Proper maintenance practices, such as keeping the screw and surrounding areas clean and free of contaminants, will help extend the screw’s service life and maintain secure fastening.

Safety Considerations

When working with the 4001226 Hexagon Flange Head Cap Screw, it is important to follow safety guidelines to prevent accidents and ensure personal safety. Use appropriate personal protective equipment, such as gloves and safety glasses, when handling and installing the screw. Additionally, ensure that all tools are in good condition and used according to manufacturer recommendations to avoid injuries.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a strong reputation in the commercial truck industry, Cummins offers a wide range of products and services designed to enhance the performance, efficiency, and reliability of trucks. The company’s commitment to innovation and quality ensures that its products, including the 4001226 Hexagon Flange Head Cap Screw, meet the high standards required for demanding applications.

Cummins Engine Compatibility with Hexagon Flange Head Cap Screw Part 4001226

The Cummins part number 4001226, a Hexagon Flange Head Cap Screw, is designed to fit seamlessly with a variety of Cummins engines. This part is integral in securing various components within the engine assembly, ensuring stability and integrity during operation. Here is a detailed look at how this part integrates with different Cummins engines:

ISG Series Engines

• ISG11 CM2880 G108
• ISG12 CM2880 G107
• ISG12 G CMOH6.0 G111

These ISG series engines benefit from the Hexagon Flange Head Cap Screw in securing critical engine components. The screw’s design allows for precise tightening, which is crucial for maintaining the structural integrity of the engine.

ISZ Series Engines

• ISZ13 CM2150 Z105

The ISZ13 CM2150 Z105 engine utilizes the Hexagon Flange Head Cap Screw to secure various parts, ensuring that the engine operates smoothly and efficiently.

QSB Series Engines

• QSB7 CM2880 B117

In the QSB7 CM2880 B117 engine, the screw is used to fasten components that require a high level of precision and strength, contributing to the engine’s overall durability.

QSG Series Engines

• QSG12/X12 CM2350 G110

The QSG12/X12 CM2350 G110 engine incorporates the Hexagon Flange Head Cap Screw to secure parts that are subject to significant stress and vibration.

QSK Series Engines

• QSK45 CM500
• QSK60 CM500
• QSK60 CM850 MCRS
• QSK60 G CM2358 K110
• QSK60G
• QSK78 CM500
• QSK95 CM2350 K111
• QSK95 CM2350 K113

The QSK series engines, including the QSK45, QSK60, QSK78, and QSK95 models, all utilize the Hexagon Flange Head Cap Screw for securing various components. The screw’s design ensures that these parts remain tightly fastened, which is essential for the engine’s performance and longevity.

X Series Engines

• X11 CM2670 X126B
• X12 CM2350 X119B
• X12 CM2670 X121B
• X13 CM2670 X122B

The X series engines, such as the X11, X12, and X13 models, also rely on the Hexagon Flange Head Cap Screw to secure critical components. The screw’s flange head design provides a larger surface area for tightening, which is beneficial for maintaining the structural integrity of these engines.

This comprehensive compatibility ensures that the Hexagon Flange Head Cap Screw is a versatile and essential component for a wide range of Cummins engines, contributing to their overall performance and durability.

Role of Part 4001226 Hexagon Flange Head Cap Screw in Engine Systems

The part 4001226 Hexagon Flange Head Cap Screw is integral to the assembly and functionality of various engine components. Its design allows for secure fastening, which is essential for maintaining the structural integrity and operational efficiency of the engine system.

Aftercooler

In the aftercooler, this screw is used to secure components that facilitate the cooling of compressed air from the turbocharger. Proper fastening ensures that the aftercooler operates efficiently, contributing to the overall performance of the engine.

Air Intake Manifold

Within the air intake manifold, the Hexagon Flange Head Cap Screw is employed to attach critical components that direct air into the engine cylinders. Secure attachment is vital for maintaining airtight seals and ensuring optimal air-fuel mixture.

Auxiliary Cooling System

For the auxiliary cooling system, this screw plays a role in attaching components that help manage engine temperature. Reliable fastening is necessary to prevent leaks and ensure the cooling system functions correctly under various operating conditions.

Clutch Mounting

In clutch mounting applications, the screw is used to secure the clutch to the flywheel. This ensures that the clutch operates smoothly and transmits power efficiently from the engine to the transmission.

Cylinder Block and Related Kits

The cylinder block, cylinder block hardware kit, and cylinder block kit all utilize this screw for assembling and securing various components. This includes attaching gaskets, sensors, and other critical parts that contribute to the engine’s structural stability and performance.

Engine Cooling System

Within the engine cooling system, the screw is used to fasten components such as the water pump, thermostat housing, and various hose connections. Secure fastening is essential for maintaining the integrity of the cooling system and preventing coolant leaks.

Engine Crankshaft

Although indirectly, the screw may be used in the assembly of components attached to the engine crankshaft, such as vibration dampers or flywheels, ensuring these parts are securely mounted and function correctly.

Exhaust Transfer Kit

In the exhaust transfer kit, the screw is used to secure components that manage the flow of exhaust gases. Proper fastening is crucial for maintaining the efficiency of the exhaust system and reducing emissions.

Fan Drive

The fan drive system utilizes this screw to secure components that control the operation of the cooling fan. Reliable fastening ensures that the fan operates efficiently, contributing to effective engine cooling.

Flywheel Housing

In the flywheel housing, the screw is used to attach the flywheel to the engine, ensuring a secure connection that is vital for smooth power transmission.

Front Gear Housing

Within the front gear housing, the screw secures gears and other components that are essential for the operation of the engine’s front-end accessories.

Fuel Supply Plumbing

In fuel supply plumbing, the screw is used to fasten components that ensure the secure and leak-free delivery of fuel to the engine. This includes attaching fuel lines, filters, and regulators.

Generator Mounting

For generator mounting, the screw is used to secure the generator to the engine, ensuring a stable and reliable power supply.

Heat Exchanger

In the heat exchanger, the screw is used to fasten components that facilitate the transfer of heat between fluids. Secure attachment is necessary for efficient heat exchange and overall system performance.

Main Generator

The main generator utilizes this screw to secure components that are critical for generating electrical power. Reliable fastening ensures the generator operates efficiently and provides a stable power supply.

Mounting Plate

The mounting plate often uses this screw to secure various engine components to the frame or other structural elements, ensuring a stable and secure attachment.

Radiator Mounting

In radiator mounting, the screw is used to attach the radiator to the engine compartment. Secure fastening is essential for maintaining the structural integrity of the cooling system and ensuring efficient heat dissipation.

Service Kit

Within a service kit, this screw may be included to replace worn or damaged fasteners, ensuring that all components are securely attached during maintenance procedures.

Shipping Bracket

The shipping bracket uses this screw to secure the engine during transportation, ensuring that all components remain intact and properly aligned.

Turbocharger and Turbocharger Arrangement

In turbochargers and turbocharger arrangements, the screw is used to fasten components that are critical for boosting engine performance. Secure attachment is necessary for maintaining the efficiency and reliability of the turbocharger system.

Upfit Kit

In upfit kits, this screw is used to attach additional components or accessories to the engine, ensuring that these additions are securely mounted and function correctly.

Vibration Damper

The vibration damper utilizes this screw to secure components that reduce engine vibrations, contributing to a smoother and more efficient operation.

Conclusion

The Cummins 4001226 Hexagon Flange Head Cap Screw is a critical component in the assembly and maintenance of commercial truck engines. Its design ensures secure fastening, vibration resistance, and durability, contributing to the overall performance and reliability of truck components. Proper installation, regular maintenance, and adherence to safety guidelines are essential for maximizing the benefits of this screw in demanding truck applications.