5273374
Hexagon Flange Head Cap Screw
Cummins®

Introduction

The Hexagon Flanged Head Cap Screw, identified by part number 5273374, is a component manufactured by Cummins, a well-established name in the automotive and heavy-duty truck industry. This screw is integral to the assembly and maintenance of heavy-duty trucks, ensuring secure fastening and reliable performance under demanding conditions.

Basic Concepts

A Hexagon Flanged Head Cap Screw is a type of fastener characterized by its hexagonal head and a flanged feature near the head. 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. Within a truck’s assembly, this screw plays a role in securing various components, contributing to the structural integrity and operational efficiency of the vehicle ¹.

Purpose and Role in Truck Operation

This Cummins part is designed to play a specific role in the operation and maintenance of heavy-duty trucks. It is used in applications where secure fastening is required, such as joining metal components, securing brackets, or attaching panels. Its design ensures that it can withstand significant stress and vibration, common in heavy-duty truck environments, thereby contributing to the overall reliability and safety of the vehicle ².

Key Features

The 5273374 features a hexagonal head that facilitates easy and precise tightening with standard tools. The flanged design near the head provides additional bearing surface, which helps in distributing the load more evenly and prevents the screw from pulling through the material. Additionally, the screw is typically made from high-strength materials, ensuring durability and resistance to corrosion, which is vital for components exposed to harsh environmental conditions ³.

Benefits

The benefits of using the 5273374 include enhanced fastening security due to its flanged design, which prevents the screw from sinking into the material. The hexagonal head allows for efficient and precise torque application, reducing the risk of over-tightening or stripping. Furthermore, the material composition ensures durability and resistance to corrosion, contributing to the longevity of the fastening solution.

Installation Process

Proper installation of the 5273374 involves several steps to ensure optimal performance and longevity. First, the mating surfaces should be clean and free of debris to ensure a secure fit. The screw should be inserted into the pre-drilled hole, ensuring it is aligned correctly. Using a torque wrench, the screw should be tightened to the manufacturer’s specified torque settings to avoid over-tightening, which could damage the screw or the material. Finally, it is advisable to periodically check the tightness of the screw to ensure it remains secure over time.

Troubleshooting and Maintenance

Common issues with the 5273374 may include loosening due to vibration or corrosion. Regular inspections can help identify these issues early. If loosening is detected, the screw should be re-tightened to the specified torque settings. In cases of corrosion, the affected area should be cleaned, and the screw may need to be replaced if significant damage is present. Routine maintenance practices, such as periodic tightening and inspection, can help prolong the lifespan of the screw 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 strong reputation in the automotive and heavy-duty truck industry for producing high-quality, reliable components. Their product range includes engines, powertrain components, and aftermarket parts, all designed to meet the demanding requirements of heavy-duty applications. Cummins’ commitment to innovation, quality, and customer satisfaction has made them a trusted name in the industry.

Application in Cummins Engines

4B3.9 and 6B5.9 Engines

The 5273374 screw is commonly used in the 4B3.9 and 6B5.9 engines, where it plays a vital role in securing various engine components. These engines, known for their robust performance and reliability, benefit from the precision and strength provided by this screw. In these engines, the part is often used in applications such as:

• Cylinder Head Bolting: Ensuring the cylinder heads are tightly secured to prevent leaks and maintain compression.
• Turbocharger Mounting: Providing a reliable connection for turbochargers, which are critical for maintaining engine efficiency and performance.
• Exhaust Manifold Fastening: Securing exhaust manifolds to prevent gas leaks and maintain the integrity of the exhaust system.

B3.3 Engine

The B3.3 engine also utilizes the 5273374 screw in several key areas. Given its smaller size compared to the 4B3.9 and 6B5.9, the B3.3 engine requires precise and reliable fastening solutions to ensure optimal performance. The screw is used in applications such as:

• Valve Cover Fastening: Ensuring the valve covers are securely attached to protect the internal components from debris and environmental factors.
• Oil Pan Bolting: Providing a strong connection for the oil pan, which is crucial for maintaining the engine’s lubrication system.
• Accessory Mounting: Securing various engine accessories, such as alternators and water pumps, to ensure they operate correctly and efficiently.

The use of the 5273374 screw in these engines highlights its importance in maintaining the structural integrity and operational efficiency of Cummins engines. Its design ensures that it can withstand the rigors of engine operation, providing a reliable fastening solution across different engine models.

Conclusion

The 5273374 Hexagon Flanged Head Cap Screw is integral to the assembly and securement of various components within engine systems. This screw is commonly utilized in the fastening of the full flow oil filter to the engine block, ensuring a secure and leak-proof connection that is essential for the efficient filtration of lubricating oil.

In the context of the flywheel housing, the Hexagon Flanged Head Cap Screw plays a significant role in attaching the housing to the engine, providing the necessary stability and alignment for the flywheel. This securement is vital for the smooth operation of the engine, as the flywheel is responsible for storing rotational energy and smoothing out the power delivery from the engine’s combustion cycles.

Furthermore, when it comes to the lubricating oil filter head, the Hexagon Flanged Head Cap Screw is employed to fasten the filter head to the engine block or the oil filter housing. This application ensures that the filter head remains firmly in place, allowing for optimal filtration of the engine oil and contributing to the overall longevity and performance of the engine.

In summary, the 5273374 Hexagon Flanged Head Cap Screw is a key component in the securement and assembly of various engine parts, including the full flow oil filter, flywheel housing, and lubricating oil filter head. Its role in these applications underscores the importance of proper fastening techniques and the selection of appropriate fasteners for engine maintenance and repair.