3255842
Hexagon Head Cap Screw
Cummins®

Introduction

The Cummins 3255842 Hexagon 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 within the truck’s structure and components. This screw is integral to maintaining the integrity and functionality of truck assemblies, ensuring that parts remain securely fastened under demanding conditions.

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 tightening and loosening using a wrench or socket. The design of the hexagon head provides a firm grip, reducing the risk of cam-out during installation. These screws are commonly used in applications requiring a high degree of torque and resistance to loosening, making them suitable for heavy-duty applications like commercial trucks ¹.

Purpose and Role in Truck Operation

The 3255842 Hexagon Head Cap Screw plays a significant role in the operation and maintenance of commercial trucks. It is utilized in areas where secure fastening is crucial, such as in the attachment of body panels, engine components, and chassis parts. Its application ensures that critical components remain firmly in place, contributing to the overall safety and performance of the truck ².

Key Features

The Cummins 3255842 Hexagon Head Cap Screw boasts several key features that enhance its performance and durability. It is typically made from high-strength materials, such as alloy steel, which provides excellent tensile strength and resistance to wear. The screw features a coarse or fine thread, depending on the specific application, allowing for optimal engagement with the mating part. Additionally, it may include features like a countersunk head for flush mounting or a corrosion-resistant coating to extend its service life in harsh environments.

Benefits

Using the Cummins 3255842 Hexagon Head Cap Screw offers several benefits. Its high-strength material composition ensures improved fastening strength, making it capable of withstanding significant loads and stresses. The screw’s design also provides resistance to vibration, which is common in truck operations, helping to maintain a secure connection over time. Furthermore, its durability in harsh operating conditions ensures longevity, reducing the need for frequent replacements and maintenance.

Installation and Usage Guidelines

Proper installation of the Cummins 3255842 Hexagon Head Cap Screw is vital to ensure its effectiveness and longevity. It should be installed using the appropriate torque specifications to achieve the desired clamping force without over-tightening, which could damage the screw or the mating part. Recommended tools include a torque wrench for precise application of torque and a socket or wrench that fits the hexagon head for secure tightening. Following manufacturer guidelines for installation will help ensure optimal performance and durability.

Troubleshooting and Maintenance

Common issues with Hexagon Head Cap Screws include loosening due to vibration or corrosion. Regular inspection and maintenance can help identify and address these issues before they lead to more significant problems. If a screw shows signs of corrosion, it may be necessary to replace it to prevent failure. Additionally, ensuring that all screws are properly torqued during installation can help prevent loosening over time.

Safety Considerations

When handling and installing the Cummins 3255842 Hexagon Head Cap Screw, it is important to observe several safety practices. Wear appropriate personal protective equipment, such as gloves and safety glasses, to protect against injury. Ensure that the work area is clean and free of debris to prevent accidents. Follow all torque specifications and use the correct tools to avoid over-tightening, which could lead to screw or part failure. Additionally, be mindful of the screw’s sharp edges, which could cause cuts or injuries if mishandled.

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 itself as a trusted name in the commercial truck industry. The company is committed to quality and innovation, providing reliable and high-performance components that meet the demanding needs of commercial truck operators. Cummins’ dedication to excellence is evident in its wide range of truck components, including the 3255842 Hexagon Head Cap Screw, which is designed to deliver superior performance and durability in heavy-duty applications.

Hexagon Head Cap Screw 3255842 in Cummins Engines

The Hexagon Head Cap Screw 3255842, manufactured by Cummins, is a critical component in several of their engine models. This part is integral to the assembly and maintenance of the engines, ensuring structural integrity and operational efficiency.

ISM CM570 and ISM CM570/870

In the ISM CM570 and ISM CM570/870 engines, the Hexagon Head Cap Screw 3255842 is used in various applications where secure fastening is essential. These engines are known for their robust design and reliability, often used in heavy-duty applications. The screw’s precision and strength are crucial in maintaining the alignment and stability of engine components, contributing to the overall performance and longevity of the engine.

M11 CELECT PLUS

The M11 CELECT PLUS engine also incorporates the Hexagon Head Cap Screw 3255842 in its construction. This engine is designed for both on-highway and off-highway applications, providing a balance of power and efficiency. The screw’s role in this engine is to ensure that all parts are tightly secured, which is vital for the engine’s ability to withstand the stresses of various operating conditions.

QSM11 CM570

Similarly, in the QSM11 CM570 engine, the Hexagon Head Cap Screw 3255842 is used to fasten and secure various components. This engine is part of Cummins’ lineup of medium-duty engines, known for their durability and performance. The screw’s application in this engine ensures that all parts remain firmly in place, contributing to the engine’s operational reliability and efficiency.

Role of Part 3255842 Hexagon Head Cap Screw in Engine Systems

The part 3255842 Hexagon Head Cap Screw is integral to the assembly and functionality of various engine components. Its robust design ensures secure fastening, which is essential for the reliable operation of these parts.

Aftercooler

In the aftercooler system, the Hexagon Head Cap Screw is used to fasten the aftercooler to its mounting brackets. This secure attachment ensures that the aftercooler remains stable during engine operation, allowing for efficient cooling of the compressed air before it enters the engine. Proper fastening is key to maintaining the structural integrity and performance of the aftercooler.

Alternator Location and Mounting

When installing the alternator, the Hexagon Head Cap Screw plays a significant role in securing the alternator to its designated location on the engine. This screw ensures that the alternator is firmly mounted, which is vital for its stable operation and efficient power generation. The secure attachment also helps in minimizing vibrations that could otherwise affect the alternator’s performance and longevity.

Alternator Package

Within the alternator package, the Hexagon Head Cap Screw is utilized to fasten various internal components, such as the rectifier bridge and the stator. These fastenings are essential for maintaining the structural integrity of the alternator, ensuring that all components remain in their proper positions and function correctly. This contributes to the overall reliability and efficiency of the alternator.

Product Installation

During the product installation phase, the Hexagon Head Cap Screw is often used to secure various engine components to the engine block or other structural parts. Its use ensures that all components are correctly positioned and tightly fastened, which is essential for the engine’s smooth operation and durability. Proper installation using this screw helps in preventing component misalignment and potential failures.

Conclusion

The Cummins 3255842 Hexagon Head Cap Screw is a vital component in the assembly and maintenance of commercial trucks and Cummins engines. Its robust design, high-strength material, and secure fastening capabilities ensure the structural integrity and operational efficiency of various engine components. Proper installation and maintenance of this screw are essential for the reliable and durable performance of commercial trucks and engines.