3275479
Hexagon Head Cap Screw
Cummins®

The Cummins Hexagon Head Cap Screw, part number 3275479, is designed for use in commercial trucks, where it plays a significant role in fastening various components and assemblies. This screw is engineered to meet the demanding requirements of heavy-duty applications, ensuring reliable performance and durability in the complex environment of truck engines and chassis.

Basic Concepts of Hexagon Head Cap Screws

A Hexagon Head Cap Screw is a type of fastener characterized by its hexagonal head, which allows for efficient torque application using wrenches or sockets. This design minimizes the risk of cam-out, providing a secure grip during installation and removal. Hexagon Head Cap Screws are commonly used in applications requiring strong, permanent fastening, and they operate mechanically by converting torque into clamping force, which holds components together securely ¹.

Role of Hexagon Head Cap Screw in Truck Operation

In commercial trucks, the Cummins Hexagon Head Cap Screw, part number 3275479, plays a significant role in securing critical components and assemblies within the engine and chassis. It is used to fasten engine blocks, transmission components, and various chassis parts, ensuring that these elements remain firmly in place under the stress of heavy-duty operation. The screw’s design and material properties are tailored to withstand the vibrations and loads encountered in truck applications ².

Key Features

The Cummins Hexagon Head Cap Screw, part number 3275479, features a robust material composition, typically consisting of high-strength steel, which provides excellent tensile strength and durability. It has a fully threaded design, allowing for secure fastening over the entire length of the screw. Additionally, it may include special coatings or treatments, such as zinc plating or black oxide finish, to enhance corrosion resistance and prolong service life in harsh operating environments ³.

Benefits

Using the Cummins Hexagon Head Cap Screw, part number 3275479, offers several benefits. Its design ensures improved fastening security, reducing the likelihood of component loosening over time. The screw’s resistance to vibration loosening is particularly important in the dynamic environment of a commercial truck, where constant movement and varying loads are common. Furthermore, the durability and longevity of this screw contribute to the overall reliability and maintenance efficiency of the truck.

Troubleshooting and Maintenance

Common issues with Hexagon Head Cap Screws include corrosion and stripping. To mitigate these problems, regular inspection and maintenance are recommended. Ensuring that screws are properly torqued during installation can prevent over-tightening, which may lead to stripping. Additionally, applying a corrosion-resistant coating or lubricant can protect the screws from environmental factors that contribute to rust and degradation.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including diesel and natural gas engines, as well as related technologies. With a history spanning over a century, Cummins is renowned for its commitment to quality, innovation, and customer satisfaction in the commercial vehicle industry. The company’s expertise in engine and component design ensures that its products, like the Cummins Hexagon Head Cap Screw, part number 3275479, meet the high standards required for heavy-duty applications.

Cummins Hexagon Head Cap Screw 3275479 in Engine Applications

The Cummins Hexagon Head Cap Screw, part number 3275479, is a critical component in the assembly and maintenance of various Cummins engines. This part is designed to provide secure fastening in high-stress environments, ensuring the integrity and reliability of engine components.

K19 and K38 Engines

In the K19 and K38 engines, the 3275479 screw is often utilized in the engine block and head assembly. Its robust design ensures that the engine’s internal components remain tightly secured, preventing any potential loosening due to vibrations and thermal expansion.

K50 Engine

The K50 engine also benefits from the use of the 3275479 screw. Here, it is typically found in the engine’s mounting and accessory systems. The screw’s high tensile strength and resistance to corrosion make it ideal for maintaining the structural integrity of these critical areas.

KTA38GC CM558 Engine

For the KTA38GC CM558 engine, the 3275479 screw plays a pivotal role in the engine’s fuel injection system and other high-pressure components. Its precision-engineered design ensures that these components are fastened securely, contributing to the engine’s overall performance and longevity.

QSK19 CM850 MCRS Engine

In the QSK19 CM850 MCRS engine, the 3275479 screw is employed in various critical assemblies, including the turbocharger and exhaust systems. The screw’s ability to withstand high temperatures and pressures makes it an essential component in these demanding applications.

General Application

Across all these engines, the 3275479 screw is chosen for its durability, precision, and reliability. Cummins engineers have selected this part to ensure that the engines operate smoothly and efficiently, with minimal maintenance requirements.

Role of Part 3275479 Hexagon Head Cap Screw in Engine Systems

Part 3275479, the Cummins Hexagon Head Cap Screw, is integral to the assembly and securement of various components within engine systems. Its application spans across multiple areas, ensuring the structural integrity and operational efficiency of the engine.

Collector Mounting

In the collector mounting system, the Hexagon Head Cap Screw is used to fasten the collector to the engine block or other structural components. This securement is vital for maintaining the alignment and stability of the collector, which is essential for efficient exhaust flow.

Exhaust Elbow and Mounting

The exhaust elbow, a curved section of the exhaust system, relies on the Hexagon Head Cap Screw for secure attachment to the exhaust manifold. Similarly, the exhaust elbow mounting uses these screws to ensure a tight and durable connection, preventing leaks and enhancing the exhaust system’s performance.

Exhaust Manifold

Within the exhaust manifold, the Hexagon Head Cap Screw plays a role in attaching the manifold to the engine block. This connection is crucial for withstanding the high temperatures and pressures generated during engine operation, ensuring reliable performance.

Exhaust Outlet Connection

At the exhaust outlet connection, the Hexagon Head Cap Screw is employed to secure the exhaust pipe to the manifold or other components. This ensures a leak-free seal, which is important for maintaining exhaust efficiency and reducing emissions.

Kit 7-Exhaust Elbow V Clamp

In the kit 7-exhaust elbow v clamp, the Hexagon Head Cap Screw is used to tighten the V-clamp around the exhaust elbow. This provides a strong and adjustable connection, accommodating variations in exhaust system design and ensuring a secure fit.

Exhaust Outlet Adapter

The exhaust outlet adapter, which connects different sections of the exhaust system, utilizes the Hexagon Head Cap Screw to create a robust and reliable joint. This is important for maintaining the integrity of the exhaust flow and preventing leaks.

Mounting Connection

Various mounting connections throughout the engine system benefit from the use of the Hexagon Head Cap Screw. These connections include securing performance parts, raw water outlet connections, and other critical components, ensuring they remain firmly in place under operating conditions.

Turbocharger Components

In turbocharger applications, the Hexagon Head Cap Screw is used in multiple areas. It secures the turbocharger to its mounting, supports the turbocharger arrangement, and ensures the turbocharger location remains stable. Additionally, it is used in the turbocharger support mounting to maintain the structural integrity of the turbocharger system.

Turo Location

The turo location, referring to the specific placement of turbocharger components, relies on the Hexagon Head Cap Screw to ensure all parts are correctly and securely fastened. This is important for the optimal performance and durability of the turbocharger system.

Conclusion

The Cummins Hexagon Head Cap Screw, part number 3275479, is a critical component in the assembly and maintenance of various Cummins engines. Its robust design, high tensile strength, and resistance to corrosion make it ideal for maintaining the structural integrity of critical engine components. Across different engine models, this screw ensures secure fastening in high-stress environments, contributing to the overall performance and longevity of the engines.