4349026
Hexagon Head Cap Screw
Cummins®

The 4349026 Hexagon Head Cap Screw is a component manufactured by Cummins, a well-established name in the commercial truck industry. This screw is significant in the context of commercial truck components due to its role in securing various parts within the truck’s mechanical assemblies. Cummins is renowned for producing high-quality parts that contribute to the reliability and efficiency of commercial vehicles ¹.

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. These screws are widely used in mechanical assemblies to secure components together. They function by threading into a pre-drilled hole and applying clamping force to hold parts in place, ensuring stability and integrity within the assembly ².

Purpose of the 4349026 Hexagon Head Cap Screw in Truck Operations

This Cummins part plays a specific role in the operation and maintenance of commercial trucks. It is utilized in various truck systems to secure components such as engine parts, transmission elements, and chassis assemblies. By providing a secure connection, this screw helps maintain the structural integrity and operational efficiency of the truck. Its applications span across different systems, ensuring that critical components remain firmly in place under varying operational conditions ³.

Key Features

The 4349026 boasts several key features that contribute to its functionality and durability. It is composed of high-strength materials, ensuring resistance to wear and corrosion. The screw features a specific thread type that provides optimal clamping force, and its hexagonal head design allows for easy and precise tightening. These features collectively enhance the screw’s performance and longevity in demanding truck environments.

Benefits

Using the 4349026 offers several benefits. It provides enhanced security for mechanical assemblies, ensuring that components remain firmly attached. The screw’s design facilitates ease of installation and removal, reducing maintenance time. Additionally, its resistance to loosening under vibration and dynamic loads contributes to the overall reliability of the truck’s mechanical systems.

Installation Guidelines

Proper installation of the 4349026 is crucial for its effectiveness. Begin by ensuring the mating surfaces are clean and free of debris. Use a tap to create the appropriate thread in the pre-drilled hole if necessary. Insert the screw and tighten it using a wrench or socket, adhering to the specified torque settings to avoid over-tightening or under-tightening. Recommended tools include a torque wrench for precise application of torque.

Troubleshooting and Maintenance

Common issues with the 4349026 may include loosening or corrosion. To address loosening, re-tighten the screw to the specified torque settings and inspect for any underlying causes such as vibration or dynamic loads. For corrosion, clean the screw and surrounding area, and consider applying a corrosion-resistant coating to prevent future issues. Regular inspection and maintenance will help ensure the longevity and performance of the screw.

Cummins: Manufacturer 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 commercial truck industry for producing reliable and high-performance components. Their product range includes engines, powertrain components, and aftermarket parts, all designed to meet the demanding requirements of commercial vehicles. Cummins’ commitment to quality and innovation ensures that their components, like the 4349026 Hexagon Head Cap Screw, contribute to the efficiency and reliability of commercial trucks.

Hexagon Head Cap Screw 4349026 in Cummins Engines

The Cummins-manufactured Hexagon Head Cap Screw part number 4349026 is a critical component in several Cummins engine models. This screw is integral to the assembly and maintenance of these engines, ensuring secure fastening of various parts.

VTA903 and CM2250 Engines

In the VTA903 and CM2250 engines, the 4349026 screw is used in several key areas. It is often employed in the engine block assembly, securing the cylinder heads and other critical components. This screw’s design allows for precise torque application, which is essential for maintaining the structural integrity of the engine.

V105 Engine

The V105 engine also utilizes the 4349026 screw in its assembly. Here, it is commonly found in the engine’s mounting system, ensuring that the engine remains securely fastened to the vehicle’s chassis. This screw’s robust construction and precise threading are vital for the engine’s operational stability and longevity.

Application Across Models

While each engine model has its unique requirements, the 4349026 screw is consistently used in areas where high strength and reliability are paramount. Its application across the VTA903, CM2250, and V105 engines underscores its versatility and importance in Cummins’ engine design.

Conclusion

The 4349026 Hexagon Head Cap Screw is a vital component in the maintenance and operation of commercial trucks, particularly in Cummins engines. Its design and features ensure secure fastening of critical components, contributing to the overall reliability and efficiency of the vehicle. Proper installation and maintenance of this screw are essential for its longevity and performance.