3093926
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3093926, is a component manufactured by Cummins, a well-established name in the commercial truck industry. This screw is integral to the assembly and maintenance of various truck components, ensuring secure fastening and reliable performance 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 for load distribution and prevents the screw from being driven too far into the material. In a truck’s mechanical system, these screws are used to secure components that require both strength and resistance to loosening, ensuring the integrity of the assembly ¹.

Purpose and Role in Truck Operation

The 3093926 Hexagon Flange Head Cap Screw plays a significant role in the operation of a truck by securing critical components that are subject to vibration and dynamic loads. Its applications range from fastening engine components to securing chassis parts, contributing to the overall stability and performance of the vehicle. The screw’s design ensures that it remains tight under various operating conditions, which is vital for the safe and efficient operation of the truck ².

Key Features

The 3093926 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 head provides additional contact area, enhancing load distribution and reducing the risk of the screw sinking into the material. Made from high-strength materials, this screw is designed to withstand significant tensile and shear forces. Its unique attributes include corrosion resistance and durability, making it suitable for use in harsh environments typical of commercial trucking operations ³.

Benefits

The benefits of using the 3093926 Hexagon Flange Head Cap Screw include improved fastening security due to its hexagonal head and flange design, which resists loosening under vibration. The screw’s material composition ensures high tensile strength and durability, contributing to the longevity of the fastening. Additionally, the flange enhances load distribution, reducing stress on the fastened components and improving the overall reliability of the truck’s mechanical system ⁴.

Installation Guidelines

Proper installation of the 3093926 Hexagon Flange Head Cap Screw involves several steps to ensure optimal performance and longevity. Begin by selecting the appropriate size and grade of screw for the application. Use a torque wrench to apply the recommended torque specification, which can be found in the manufacturer’s guidelines, to achieve the correct tension without over-tightening. Ensure that the screw is aligned properly with the hole to avoid cross-threading. Finally, periodically check the tightness of the screw to maintain secure fastening over time.

Troubleshooting and Maintenance

Common issues with the 3093926 Hexagon Flange Head Cap Screw may include loosening, corrosion, or damage. To address loosening, re-tighten the screw to the specified torque. Corrosion can be mitigated by applying a suitable anti-corrosion coating or using screws made from corrosion-resistant materials. If damage is detected, replace the screw with a new one to ensure the integrity of the fastening. Regular maintenance, including inspection and re-tightening as needed, will help prolong the screw’s lifespan and ensure continued reliable performance.

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 commercial truck industry. The company’s commitment to excellence is evident in its wide range of products, which are designed to meet the demanding requirements of commercial trucking applications. Cummins’ focus on quality and customer satisfaction underscores its position as a trusted manufacturer of truck components, including the 3093926 Hexagon Flange Head Cap Screw.

Hexagon Flange Head Cap Screw 3093926 in Cummins Engines

The Hexagon Flange Head Cap Screw 3093926, manufactured by Cummins, is a critical component in various Cummins engine models. This part is designed to secure different parts of the engine together, ensuring structural integrity and operational efficiency. Below is a detailed look at how this screw fits into specific Cummins engine models.

Cummins 4B3.9, 6B5.9, 6C8.3, B3.3, B5.6 CM2670 B152B, B5.9 G, B6.7 CM2670 B153B, B6.7 CM2670 B164C

In these engines, the 3093926 screw is used to fasten various components, including engine blocks, cylinder heads, and other critical assemblies. Its flange head design provides a larger surface area for torque application, which is essential for maintaining the tight seals required in high-performance engines.

Cummins F2.8 CM2620 F135B, ISB3.9 CM2220 B107, ISB5.9 CM2880 B110, ISB5.9 CM2880 B127, ISB5.9 CM2880 B140, ISB5.9 CM2880 B149

These engines utilize the 3093926 screw for securing components such as the engine block and cylinder heads. The screw’s robust design ensures that it can withstand the high pressures and temperatures typical of these engines.

Cummins ISBE CM800, ISBE4 CM850, ISF2.8 CM2220 F117, ISF2.8 CM2220 F129

In these models, the 3093926 screw is used to fasten parts that require a high level of precision and strength. The flange head allows for easier access and better torque distribution, which is crucial for maintaining the engine’s structural integrity.

Cummins L9.3 L105, QSB3.3 CM2150, QSB3.3 CM2250 EC, QSB4.5 CM2250 EC, QSB4.5 CM850 (CM2850), QSB5.9 CM2880 B115, QSB5.9 CM550

In these engines, the 3093926 screw is used to secure various components, including the engine block, cylinder heads, and other critical assemblies. The screw’s design ensures that it can handle the high stresses and temperatures found in these engines, providing reliable fastening and long-term durability.

Role of Part 3093926 Hexagon Flange Head Cap Screw in Engine Systems

The part 3093926 Hexagon Flange Head Cap Screw is instrumental in securing and maintaining the integrity of various engine components. Its application spans across multiple systems, ensuring that each part functions optimally and remains securely in place.

Air Intake Manifold

In the air intake manifold, the Hexagon Flange Head Cap Screw is used to fasten the manifold to the cylinder head. This secure attachment ensures a tight seal, preventing air leaks that could affect engine performance.

Crankcase Breather

For the crankcase breather system, this screw plays a role in attaching the breather housing to the cylinder block. Proper sealing here is essential to maintain crankcase pressure and prevent oil contamination.

Cylinder Block and Cylinder Head

Within the cylinder block and cylinder head assemblies, the screw is employed to secure various components such as the rocker lever and heat shield arrangement. This ensures that these parts remain firmly in place under the high stresses and temperatures of engine operation.

Electronic Control Module Wiring Harness

In the electronic control module (ECM) wiring harness, the screw is used to mount the ECM securely within the engine bay. This is vital for protecting the sensitive electronic components from vibrations and environmental factors.

Engine Control Module and Engine Control Optical Module

Both the engine control module (ECM) and the engine control optical module require stable mounting. The Hexagon Flange Head Cap Screw ensures these modules are securely attached, maintaining the integrity of the engine’s electronic control systems.

Exhaust Manifold

The screw is also utilized in the exhaust manifold to secure it to the cylinder head. This attachment is crucial for withstanding the high temperatures and pressures of the exhaust gases.

Fan Drive and Fan Drive Belt

In the fan drive and fan drive belt systems, the screw is used to secure the idler pulley in its designated location. This ensures the proper tension and alignment of the fan drive belt, which is essential for cooling system efficiency.

Fuel Pump Body and Fuel Pump Coupling

Within the fuel system, the screw is employed to mount the fuel pump body and secure the fuel pump coupling. This ensures a stable and leak-free connection, which is vital for consistent fuel delivery.

Heat Shield Arrangement

The heat shield arrangement benefits from the use of this screw to maintain its position and effectiveness in protecting nearby components from excessive heat.

Intake Connection Mounting

For the intake connection mounting, the screw ensures a secure and leak-free connection between the intake manifold and other components, which is essential for optimal air intake.

Leak Test Kit

During maintenance procedures, the screw may be used in conjunction with a leak test kit to secure components temporarily, allowing for accurate leak detection and diagnosis.

Lifting Arrangement and Lifting Bracket Mounting

In maintenance and repair scenarios, the screw is used in lifting arrangements and bracket mountings to secure components during lifting operations, ensuring safety and stability.

Oil Fill Arrangement

The screw is also utilized in the oil fill arrangement to secure the oil fill cap and associated components, ensuring a tight seal and preventing oil leaks.

Performance Parts

In performance-enhanced engines, the screw is often used to secure aftermarket performance parts, ensuring they withstand the increased stresses and temperatures.

Turbocharger Arrangement and Turbocharger Plumbing

Finally, in turbocharger systems, the screw is used to secure the turbocharger arrangement and plumbing, ensuring all connections are tight and secure, which is essential for maintaining boost pressure and overall performance.

Conclusion

The 3093926 Hexagon Flange Head Cap Screw is a vital component in the assembly and maintenance of Cummins engines, ensuring secure fastening and reliable performance under demanding conditions. Its robust design, corrosion resistance, and durability make it suitable for use in harsh environments typical of commercial trucking operations. Proper installation and maintenance of this screw are essential for the longevity and reliability of the engine systems it supports.