4059430
Hexagon Flange Head Cap Screw
Cummins®

The Cummins Hexagon Flange Head Cap Screw (Part #4059430) is a specialized fastener designed for use in commercial trucks. This screw is integral to ensuring structural integrity and operational efficiency in various truck components and systems. Its robust design and high-quality materials make it a reliable choice for demanding applications.

Basic Concepts of Hexagon Flange Head Cap Screws

A Hexagon Flange Head Cap Screw is a type of fastener characterized by its hexagonal head and flange features. The hexagonal head allows for efficient torque application using standard tools, ensuring secure fastening. The flange, a flat, circular plate at the head’s base, provides additional surface area and stability, preventing the screw from sinking into soft materials and distributing the load more evenly. These design elements contribute to a stable and secure fastening solution ¹.

Role and Purpose in Commercial Trucks

This Cummins part plays a significant role in the operation of commercial trucks. It is used in various truck components and systems, including engine mounts, chassis assemblies, and body panels. By providing a secure and stable connection, this screw helps maintain the structural integrity of these components, contributing to the overall performance and reliability of the vehicle. Its design ensures that critical parts remain firmly in place, even under the stress of heavy loads and rough road conditions ².

Key Features

The 4059430 boasts several key features that enhance its performance and durability. It is made from high-strength materials, typically alloy steel, which provides excellent tensile strength and resistance to wear. The screw features a coarse thread type, which offers superior holding power and easier installation. Additionally, it may include special coatings or treatments, such as zinc plating or black oxide finish, to improve corrosion resistance and extend its service life in harsh environments ³.

Benefits

The benefits of using the 4059430 include improved fastening security, resistance to vibration loosening, and enhanced corrosion resistance. The flange head design prevents the screw from loosening due to vibrations, a common issue in heavy-duty truck applications. The corrosion-resistant coatings protect the screw from rust and degradation, ensuring longevity and reducing maintenance requirements. These features contribute to the reliable performance and durability of truck components.

Installation Guidelines

Proper installation of the 4059430 is vital to ensure optimal performance and safety. Follow these step-by-step guidelines for installation:

1. Select the Appropriate Tool: Use a hexagonal socket or wrench that fits the screw head snugly.
2. Apply Torque Specifications: Refer to the manufacturer’s torque specifications to avoid over-tightening or under-tightening. Typically, these screws require a specific torque range to achieve the desired clamping force without damaging the screw or the fastened material.
3. Use Recommended Tools: Employ high-quality torque wrenches and sockets to ensure accurate torque application.
4. Check Alignment: Ensure that the screw is aligned properly with the hole to prevent cross-threading and ensure a secure fit.
5. Inspect the Installation: After tightening, inspect the screw to confirm it is secure and the flange is flush with the surface.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws include loosening due to vibrations, corrosion, and wear. To troubleshoot and maintain these screws:

• Regular Inspection: Periodically check screws for signs of loosening, corrosion, or damage.
• Re-tightening: If screws show signs of loosening, re-tighten them to the specified torque.
• Corrosion Protection: Apply protective coatings or treatments if signs of rust are present.
• Replacement: Replace screws that show significant wear or damage to prevent failure.

Cummins: A Brief 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 reputation for quality and innovation in the automotive and heavy-duty truck industry. The company is committed to producing high-quality components, such as the 4059430, ensuring they meet rigorous standards for performance and durability. Cummins’ dedication to excellence is reflected in their comprehensive range of products designed to enhance the efficiency and reliability of commercial vehicles.

Hexagon Flange Head Cap Screw (Part 4059430) in Cummins Engines

The Cummins part number 4059430, a Hexagon Flange Head Cap Screw, is a critical component in the assembly and maintenance of several Cummins engine models. This screw is designed to secure various parts within the engine, ensuring structural integrity and operational efficiency.

ISX Series Engines

In the ISX series, which includes models ISX CM570, ISX CM870, and ISX CM871, the Hexagon Flange Head Cap Screw is utilized in several key areas. These engines are known for their robust performance and reliability, and the screw’s role in maintaining the engine’s structural integrity is vital. The screw is often used in securing components that are subject to high stress and vibration, ensuring that these parts remain tightly fastened and do not come loose during operation.

QSX Series Engines

For the QSX series, specifically the QSX15 CM2250, QSX15 CM2250 ECF, and QSX15 CM2350 X105, the Hexagon Flange Head Cap Screw is similarly crucial. These engines are designed for heavy-duty applications, and the screw’s ability to withstand high loads and maintain a secure fit is essential. The screw is used in various applications, including securing engine covers, brackets, and other critical components that need to be tightly fastened to prevent any movement or misalignment.

The use of the Hexagon Flange Head Cap Screw in these engines highlights its importance in ensuring the longevity and reliability of the engine. Its design allows for easy installation and removal, which is beneficial during routine maintenance and repairs. The screw’s flange head provides a larger surface area for torque application, ensuring that it can handle the forces exerted during engine operation.

Hexagon Flange Head Cap Screw (Part 4059430) in Engine Systems

The Hexagon Flange Head Cap Screw, identified by part number 4059430, is integral in securing various components within engine systems, ensuring both stability and efficiency.

Role in Pumps

In pump assemblies, the Hexagon Flange Head Cap Screw is often used to fasten the pump housing to the engine block or other mounting surfaces. This secure attachment is essential for maintaining the alignment and integrity of the pump, which is responsible for circulating fluids such as coolant or fuel throughout the engine. The screw’s design allows for a robust connection that can withstand the vibrations and pressures inherent in pump operation.

Application in Lubricating Oil Systems

Within lubricating oil systems, the Hexagon Flange Head Cap Screw plays a significant role in attaching oil filters, pressure relief valves, and other critical components to the engine block or oil passages. This ensures that these components remain firmly in place, allowing for consistent and reliable oil flow. Proper attachment is vital for maintaining the lubrication necessary to reduce friction and wear on moving parts, thereby enhancing the engine’s longevity and performance.

The screw’s flange head provides additional surface area for torque application, reducing the risk of stripping or loosening over time, which is particularly important in high-stress environments typical of engine compartments.

Conclusion

The Cummins Hexagon Flange Head Cap Screw (Part #4059430) is a critical component in the maintenance and operation of commercial trucks and Cummins engines. Its robust design, high-quality materials, and key features make it an essential fastener for ensuring structural integrity and operational efficiency in various truck components and systems. Proper installation, regular maintenance, and timely replacement are vital to maximizing the performance and longevity of this part.