3902556
Hexagon Head Cap Screw
Cummins®

The 3902556 Hexagon Head Cap Screw, manufactured by Cummins, is a specialized fastener designed for use in commercial trucks. Cummins, a well-established name in the commercial truck industry, produces a range of components that ensure the reliability and efficiency of heavy-duty vehicles. This Cummins part is one such component, integral to the assembly and maintenance of commercial trucks.

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 hexagonal head provides a secure grip, minimizing the risk of cam-out, which is when the wrench slips off the screw head. These screws are commonly used in applications requiring a high degree of torque and reliability, such as in the automotive and heavy-duty truck industries. The threading on the screw allows it to create a strong, secure connection when driven into a pre-drilled hole ¹.

Purpose of the 3902556 Hexagon Head Cap Screw in Truck Operation

This part plays a role in the assembly and maintenance of commercial trucks by securing various components. It is used in applications where a strong, durable fastening solution is required. This includes attaching engine components, chassis parts, and other critical assemblies. The screw’s design ensures that it can withstand the vibrations and stresses associated with heavy-duty truck operation, providing a reliable connection that helps maintain the integrity of the truck’s structure and performance ².

Key Features

The 3902556 features a hexagonal head design, which offers a secure grip for tools during installation and removal. It is composed of high-quality materials, typically a grade of steel that provides excellent strength and durability. The threading specifications of the screw are designed to ensure a tight, secure fit in the corresponding holes, enhancing the overall stability of the fastened components. Additionally, the screw may be coated or treated to offer corrosion resistance, further extending its lifespan in demanding environments ³.

Benefits

This Cummins part offers several benefits that make it suitable for use in commercial trucks. Its durable construction ensures long-lasting performance, even under the stress of heavy-duty applications. The corrosion-resistant properties of the screw help protect it from environmental factors that could otherwise lead to degradation. Additionally, the hexagonal head design allows for easy installation and removal, reducing the time and effort required during maintenance procedures.

Installation Guidelines

Proper installation of the 3902556 involves several steps to ensure a secure and lasting connection. Begin by ensuring that the hole into which the screw will be driven is clean and free of debris. Use a wrench or socket that fits the hexagonal head of the screw to drive it into the hole. Apply torque according to the manufacturer’s specifications to achieve the correct tightness without over-tightening, which could damage the screw or the surrounding components. Recommended tools for installation include a torque wrench to ensure precise torque application.

Troubleshooting and Maintenance

Common issues associated with Hexagon Head Cap Screws include loosening over time due to vibrations or insufficient torque during installation. To troubleshoot, check the torque specifications and re-tighten the screw if necessary. Regular inspection during maintenance routines can help identify screws that may be loosening or showing signs of wear. Proper maintenance practices, such as keeping the screw and surrounding areas clean and free of corrosion, can help ensure the longevity and performance of the fastener.

Cummins: Manufacturer Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration systems, and related components. With a history spanning over a century, Cummins has established a strong reputation in the commercial truck industry for producing reliable, high-performance parts. The company’s extensive product range and commitment to innovation have made it a trusted name among truck manufacturers and fleet operators worldwide.

Cummins Hexagon Head Cap Screw 3902556 in Engine Applications

The Cummins Hexagon Head Cap Screw part number 3902556 is a critical component in various engine assemblies, ensuring secure fastening and structural integrity. This screw is designed to withstand high stress and provide reliable performance in demanding environments.

K19 Engine Group

In the K19 engine series, the 3902556 screw is utilized in several key areas. It is commonly found in the engine block, where it helps to secure various components together. This includes fastening the cylinder head to the engine block, ensuring a tight seal and preventing leaks. Additionally, it is used in the mounting of ancillary components such as the alternator and power steering pump, providing stability and durability.

The precision engineering of the 3902556 screw ensures that it fits seamlessly into the engine’s design, contributing to the overall reliability and longevity of the engine. Its robust construction and high-quality materials make it an essential part of the engine assembly, ensuring that all components remain securely fastened under various operating conditions.

Role of Part 3902556 Hexagon Head Cap Screw in Engine Systems

The part 3902556 Hexagon Head Cap Screw is instrumental in securing various components within engine systems, ensuring stability and integrity throughout operation.

In the context of a Counterbore Cutter Kit, the Hexagon Head Cap Screw is utilized to fasten the cutter to its mounting base. This secure attachment is essential for maintaining the alignment and precision of the cutting operation, which is vital for creating accurate counterbores in engine components. The screw’s hexagonal head allows for efficient torque application, minimizing the risk of slippage during installation or removal, which is particularly important in high-precision machining environments.

Additionally, the Hexagon Head Cap Screw plays a significant role in other engine components such as valve covers, intake manifolds, and cylinder head assemblies. In these applications, the screw ensures that components remain firmly in place, preventing vibrations and misalignments that could lead to performance issues or mechanical failures.

The consistent use of the Hexagon Head Cap Screw across various engine components underscores its importance in maintaining the structural integrity and operational efficiency of engine systems.

Conclusion

The 3902556 Hexagon Head Cap Screw is a vital component in the assembly and maintenance of commercial trucks and engine systems. Its robust design, durable construction, and precise engineering make it an essential part for ensuring the reliability and performance of heavy-duty vehicles. Proper installation, regular maintenance, and adherence to torque specifications are crucial for maximizing the lifespan and effectiveness of this fastener.