3026678
Hexagon Flange Head Cap Screw
Cummins®

The Cummins Hexagon Flange Head Cap Screw, identified by Part #3026678, is a specialized fastener essential for heavy-duty truck applications. This screw is renowned for its robust design and reliable performance, meeting the stringent demands of heavy-duty truck operations ³.

Basic Concepts

A Hexagon Flange Head Cap Screw is characterized by its hexagonal head and a flange beneath the head. The hexagonal head allows for efficient torque application using standard tools, while the flange provides additional surface area to distribute the load and prevent the screw from sinking into the material ⁴.

Purpose and Role in Truck Operation

This Cummins part plays a significant role in the operation and maintenance of heavy-duty trucks. It is commonly employed in areas requiring secure fastening, such as attaching engine components, chassis parts, and other critical assemblies. Its design ensures that components remain firmly in place under dynamic and demanding conditions ¹.

Key Features

The Hexagon Flange Head Cap Screw boasts several key features that enhance its functionality and durability. The hexagonal head design allows for easy and precise application of torque, ensuring consistent tightening. The flange beneath the head provides additional bearing surface, which helps distribute the load and prevents the screw from embedding into the material. Additionally, the screw is typically made from high-strength materials, offering excellent resistance to wear and corrosion ².

Benefits

Using the Hexagon Flange Head Cap Screw in truck assemblies offers several benefits. Its design enhances fastening security, ensuring that components remain firmly attached under various operational stresses. The flange provides resistance to vibration, which is crucial in the dynamic environment of a heavy-duty truck. Furthermore, the hexagonal head allows for straightforward installation and removal, facilitating maintenance procedures ⁴.

Installation and Usage

Proper installation of the Hexagon Flange Head Cap Screw is vital to ensure optimal performance and longevity. It is important to follow torque specifications provided by the manufacturer to achieve the correct tension without over-tightening, which could damage the screw or the material it is securing. Using the appropriate tools and techniques during installation will help maintain the integrity of the fastening and ensure reliable operation ¹.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws include loosening due to vibration and corrosion. Regular inspection and maintenance can help identify and address these issues promptly. If a screw shows signs of loosening, it should be re-tightened to the specified torque. Corrosion can be mitigated by using screws made from corrosion-resistant materials and applying protective coatings where necessary. Proper maintenance practices will prolong the service life of the screw and ensure reliable operation ².

Compatibility and Applications

The Hexagon Flange Head Cap Screw is widely used in various applications within heavy-duty trucks. It is compatible with a range of materials and components, making it a versatile choice for securing engine parts, chassis components, and other critical assemblies. When selecting screws for specific applications, it is important to consider the material compatibility and the environmental conditions the screw will encounter ³.

Manufacturer Overview - Cummins

Cummins is a leading manufacturer in the automotive industry, with a strong history of producing high-quality diesel engines and components. The company is renowned for its commitment to innovation, quality, and customer satisfaction. Cummins’ expertise in designing and manufacturing robust components ensures that their products, including the Hexagon Flange Head Cap Screw, meet the demanding requirements of heavy-duty truck applications ⁴.

Cummins Hexagon Flange Head Cap Screw in Engine Applications

The Cummins Hexagon Flange Head Cap Screw, part number 3026678, is a critical component in various engine applications. This part is engineered to provide robust fastening solutions, ensuring the integrity and performance of the engine systems it is used in.

In the K50 engine series, the 3026678 screw is utilized in several key areas. It is often found securing critical engine components, ensuring that they remain tightly fastened under operational stresses. This screw’s design, with its hexagonal head and flange, allows for efficient torque application and retention, which is essential for maintaining the structural integrity of the engine.

The use of this screw in the K50 engines highlights Cummins’ commitment to quality and reliability. By employing the 3026678 screw, Cummins ensures that the engine’s components are held securely, reducing the risk of loosening or failure during operation. This is particularly important in high-stress environments where engine components are subject to significant mechanical forces ¹.

Role of Part 3026678 Hexagon Flange Head Cap Screw in Engine Systems

This part is instrumental in the assembly and maintenance of various engine components. Its design allows for secure fastening, which is essential for the integrity and performance of the engine system.

Base Part and Base Parts

In the assembly of base parts, the Hexagon Flange Head Cap Screw ensures that components are held firmly in place. This is particularly important for the base part, where stability is paramount. The screw’s flange head provides additional surface area for distribution of clamping force, reducing the risk of stripping or damage to the base material ².

Kit Assembly

When integrating kits that include multiple engine components, the Hexagon Flange Head Cap Screw plays a significant role in maintaining the structural integrity of the assembly. Its design facilitates easy installation and removal, which is beneficial during routine maintenance or repairs ⁴.

LP Conversion

For LP (Liquid Propane) conversion kits, the Hexagon Flange Head Cap Screw is used to secure components such as regulators, valves, and connection points. The screw’s robust design ensures that these critical elements remain firmly attached, even under varying pressure conditions ¹.

Lubricating Oil Pump

In the lubricating oil pump system, the Hexagon Flange Head Cap Screw is employed to fasten the pump housing and other related components. This ensures that the pump operates efficiently, with minimal risk of leaks or component misalignment. The screw’s flange head also aids in preventing loosening due to vibrations, which is common in engine environments ².

Parts and Pump

Across various parts of the engine, including the pump, the Hexagon Flange Head Cap Screw is utilized to secure covers, brackets, and other attachments. Its application in these areas ensures that all components remain aligned and function as intended, contributing to the overall reliability of the engine system ³.

Lubricating Oil System

Within the lubricating oil system, the Hexagon Flange Head Cap Screw is crucial for securing filters, sensors, and other components. This ensures that the system maintains optimal performance, with secure connections that withstand the dynamic conditions of engine operation ⁴.

Conclusion

The Cummins Hexagon Flange Head Cap Screw, part number 3026678, is a vital component in heavy-duty truck applications, particularly in engine systems. Its robust design, ease of installation, and resistance to vibration and corrosion make it an ideal choice for ensuring the durability and performance of critical engine components. Proper installation, regular maintenance, and understanding its applications are key to maximizing the benefits of this part in heavy-duty truck operations.