3284021
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3284021, is a component manufactured by Cummins, a well-established name in the automotive industry. This screw plays a significant role in the maintenance and operation of commercial trucks. Its design and functionality are tailored to meet the demanding requirements of heavy-duty applications, ensuring reliable performance and durability.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by its hexagonal head and flange, which provides a larger bearing surface and enhanced resistance to loosening ¹. This screw is designed to secure various components within a truck’s mechanical system. The hexagonal head allows for efficient torque application using standard tools, while the flange distributes the load more evenly, reducing the risk of damage to the fastened material.

Purpose and Role

The 3284021 Hexagon Flange Head Cap Screw serves multiple functions within a truck’s mechanical system. It is used to secure critical components such as engine parts, transmission elements, and chassis assemblies. By providing a strong and stable connection, this screw helps maintain the integrity and performance of these components. Its applications range from fastening engine blocks to securing exhaust systems, highlighting its versatility and importance in truck maintenance ².

Key Features

The 3284021 Hexagon Flange Head Cap Screw boasts several key features that enhance its performance and reliability. Its hexagonal flange head design allows for easy installation and removal using common tools. The screw is made from high-quality materials, ensuring durability and resistance to corrosion. Additionally, its threading specifications are designed to provide a secure fit, minimizing the risk of loosening over time ³.

Benefits

The benefits of using the 3284021 Hexagon Flange Head Cap Screw include enhanced durability, resistance to loosening, and ease of installation and removal. The flange head design provides a larger bearing surface, which helps distribute the load more evenly and reduces the risk of damage to the fastened material. The high-quality material composition ensures long-lasting performance, even in harsh operating conditions. Furthermore, the screw’s design allows for straightforward installation and removal, saving time and effort during maintenance procedures.

Installation Process

Proper installation of the 3284021 Hexagon Flange Head Cap Screw involves several steps to ensure a secure and lasting connection. Begin by cleaning the fastening area to remove any debris or corrosion. Use a torque wrench to apply the appropriate amount of torque, ensuring the screw is tightened to the manufacturer’s specifications. It is important to avoid over-tightening, which can damage the screw or the fastened material. Additionally, consider using a thread locker to further prevent loosening, especially in vibrating environments.

Troubleshooting and Maintenance

Common issues with the 3284021 Hexagon Flange Head Cap Screw may include loosening or corrosion. To troubleshoot these problems, first, inspect the screw and the fastened area for signs of wear or damage. If corrosion is present, clean the affected areas thoroughly and consider applying a corrosion-resistant coating. For loosening issues, ensure the screw is tightened to the correct torque specification and consider using a thread locker. Regular maintenance, such as periodic inspection and re-tightening, can help ensure optimal performance and longevity.

Cummins Overview

Cummins is a reputable manufacturer in the automotive industry, known for its commitment to producing high-quality truck components. With a rich history of innovation and excellence, Cummins has established itself as a leader in the field. The company’s dedication to quality and performance is evident in its wide range of products, including the 3284021 Hexagon Flange Head Cap Screw. Cummins’ reputation for reliability and durability makes it a trusted choice for commercial truck maintenance and operation.

Hexagon Flange Head Cap Screw (Part 3284021) in Cummins Engines

The Hexagon Flange Head Cap Screw, part number 3284021, is a critical component in various Cummins engines. This screw is designed to provide a secure fastening solution, ensuring that components remain tightly secured under operational conditions. Here is how this part integrates with different Cummins engines:

Cummins B Series Engines

• B4.5
• B6.7S

These engines utilize the 3284021 screw in several applications, including securing various engine covers and housings. Its flange head design provides a broad surface area for torque application, ensuring reliable fastening.

Cummins ISC and ISL Series Engines

• ISC CM2150
• ISC8.3 CM2250
• ISL CM2150
• ISL9 CM2250

In these engines, the 3284021 screw is often used for securing the turbocharger housing, exhaust manifolds, and other critical components. The robust design of the screw ensures that these parts remain securely fastened, even under high-stress conditions.

Cummins QSB Series Engines

• QSB3.9 30 CM550
• QSB5.9 CM550
• QSB6.7 CM2250

The 3284021 screw is integral in securing various engine components in these models, including the valve covers and other critical housings. Its use in these engines ensures that the engine’s structural integrity is maintained.

Cummins QSC and QSL Series Engines

• QSC9 CM2250/QSL9 CM2250
• QSL9 CM2250

In these high-performance engines, the 3284021 screw is used for securing heavy-duty components such as the cylinder heads and other critical parts. The screw’s design provides the necessary strength and durability to withstand the demanding conditions of these engines.

The 3284021 screw’s application across these engines highlights its versatility and importance in maintaining the structural integrity and operational efficiency of Cummins engines.

Understanding the Role of Part 3284021 Hexagon Flange Head Cap Screw in Engine Systems

In the intricate world of engine systems, the part 3284021 Hexagon Flange Head Cap Screw plays a significant role in ensuring the structural integrity and efficient operation of various components. This screw is instrumental in securing and maintaining the alignment of several key parts within the engine assembly.

Air Intake Connection

The air intake connection is a vital component that facilitates the smooth flow of air into the engine. The 3284021 screw is often used to fasten the air intake manifold to the engine block or other mounting points. This ensures a secure and airtight connection, which is essential for optimal engine performance and efficiency.

Alternator Mounting

The alternator is responsible for generating electrical power to charge the battery and power the vehicle’s electrical systems. The 3284021 screw is commonly employed in securing the alternator to its mounting bracket. This fastening ensures that the alternator remains firmly in place, allowing it to operate efficiently without vibrations that could lead to malfunction.

Injector Plumbing

Fuel injectors are critical for delivering precise amounts of fuel into the combustion chamber. The 3284021 screw is utilized in the assembly of injector plumbing, where it helps to secure fuel lines and fittings. This ensures that the fuel delivery system remains intact and functions without leaks, contributing to consistent engine performance.

Oil Pan

The oil pan serves as a reservoir for engine oil, which is essential for lubricating moving parts and reducing friction. The 3284021 screw is often used in the attachment of the oil pan to the engine block. This secure fastening is vital for maintaining the structural integrity of the oil pan and preventing oil leaks, which could lead to engine damage.

Oil Pan Mounting

In addition to securing the oil pan itself, the 3284021 screw plays a role in the overall oil pan mounting system. It is used to fasten various brackets and supports that hold the oil pan in place. This ensures that the oil pan remains stable and properly aligned, facilitating efficient oil circulation and drainage.

By understanding the applications of the 3284021 Hexagon Flange Head Cap Screw in these engine components, engineers and mechanics can appreciate its importance in maintaining the reliability and performance of engine systems.

Conclusion

The 3284021 Hexagon Flange Head Cap Screw is a vital component in the maintenance and operation of commercial trucks, particularly in Cummins engines. Its robust design, ease of installation, and resistance to loosening make it an essential part for securing various engine components. Proper installation and regular maintenance are crucial to ensure the longevity and performance of this screw, contributing to the overall reliability of the truck’s mechanical system.