3012468
Captive Washer Cap Screw
Cummins®

The 3012468 Captive Washer Cap Screw, manufactured by Cummins, is a specialized fastener designed for use in commercial truck maintenance and operation. Cummins, a well-established name in the automotive and heavy-duty truck industry, produces this component to meet the rigorous demands of truck mechanics and fleet maintenance professionals. This part is integral to ensuring the reliability and efficiency of truck systems, contributing to the overall performance and longevity of commercial vehicles.

Basic Concepts of Captive Washer Cap Screw

A Captive Washer Cap Screw is a type of fastener that includes an integrated washer, which is held in place by a protrusion or step on the screw’s shank. This design ensures that the washer remains attached to the screw during installation, reducing the risk of loss and simplifying the fastening process. The components of a Captive Washer Cap Screw typically include the screw head, the threaded shank, and the captive washer. In mechanical systems, these screws play a role in securing components together while providing a uniform distribution of clamping force, which helps prevent leaks and ensures a tight seal ¹.

Purpose of the 3012468 Captive Washer Cap Screw in Truck Operation

The 3012468 Captive Washer Cap Screw is utilized in various applications within commercial trucks. It is commonly employed in the assembly of engine components, transmission systems, and chassis parts. By securing critical components, this screw helps maintain the structural integrity and operational efficiency of the truck. Its design allows for consistent torque application, which is vital for the proper functioning of mechanical systems. Additionally, the integrated washer aids in distributing the load evenly, which is particularly important in high-stress areas of the truck.

Key Features of the 3012468 Captive Washer Cap Screw

The 3012468 Captive Washer Cap Screw is engineered with specific design elements and materials to enhance its performance and durability. It is typically made from high-strength steel, which provides the necessary tensile strength to withstand the dynamic loads experienced in truck operations. The screw’s head is designed for easy installation using common tools, and the captive washer is securely attached to prevent detachment during use. These features contribute to the screw’s reliability and ease of use in various truck systems.

Benefits of Using the 3012468 Captive Washer Cap Screw

The 3012468 Captive Washer Cap Screw offers several advantages that make it a preferred choice for truck maintenance professionals. Its design simplifies the installation process by eliminating the need to handle a separate washer, which reduces the risk of washer loss and ensures consistent clamping force. The high-strength material used in its construction enhances its durability, making it suitable for long-term use in demanding environments. Additionally, the screw’s ability to provide a uniform load distribution contributes to the reliability and efficiency of truck systems.

Installation and Usage Guidelines

To ensure optimal performance and longevity of the 3012468 Captive Washer Cap Screw, it is important to follow proper installation guidelines. Begin by cleaning the mating surfaces to remove any debris or contaminants that could affect the screw’s grip. Use a torque wrench to apply the recommended torque specification, which ensures that the screw is tightened to the correct level without over-tightening. It is also important to periodically inspect the screw for signs of wear or damage and replace it if necessary to maintain the integrity of the truck’s systems.

Troubleshooting Common Issues

Common issues associated with Captive Washer Cap Screws include loosening over time, corrosion, and damage from over-tightening. To address these problems, regularly inspect the screws for any signs of wear or corrosion. If a screw appears loose, re-tighten it to the specified torque setting. In cases of corrosion, clean the affected area and consider applying a corrosion-resistant coating to prevent further degradation. If a screw is damaged from over-tightening, replace it with a new one to ensure the continued reliability of the truck’s systems.

Maintenance Tips

To prolong the life of the 3012468 Captive Washer Cap Screw and ensure continued reliable operation, incorporate regular maintenance practices into your truck’s service schedule. Inspect screws during routine maintenance checks for signs of wear, corrosion, or damage. Clean mating surfaces before installation to ensure a proper fit and optimal performance. Additionally, store spare screws in a dry, corrosion-resistant environment to prevent degradation before use. By following these maintenance tips, you can help ensure the longevity and reliability of the 3012468 Captive Washer Cap Screw in your truck’s systems.

Cummins: Manufacturer Overview

Cummins is a globally recognized manufacturer with a strong reputation in the commercial truck industry. Founded in 1919, Cummins has a long history of innovation and excellence in engine and power generation technologies. The company offers a wide range of products, including engines, filtration systems, and aftermarket parts, designed to meet the needs of various industries. Cummins is known for its commitment to quality, reliability, and customer satisfaction, making it a trusted name among fleet operators and maintenance professionals.

Captive Washer Cap Screw (Part 3012468) in Cummins Engines

The Captive Washer Cap Screw, part number 3012468, is a critical component in various Cummins engines, ensuring secure fastening and stability. This part is designed to provide a reliable connection between different engine parts, enhancing the overall performance and durability of the engine.

G855 Series

In the G855 series, the Captive Washer Cap Screw is utilized in several configurations, including:

• G855 CM558
• GTA855 CM558 (CM2358) G101

These engines benefit from the secure fastening provided by the 3012468 part, ensuring that critical components remain tightly connected under high operational stresses.

N14 Series

The N14 series engines also incorporate the Captive Washer Cap Screw in various models:

• N14 CELECT
• N14 CELECT PLUS
• N14 G
• N14 MECHANICAL

This part is essential in maintaining the integrity of the engine’s structure, particularly in models that require precise and reliable fastening solutions.

NH/NT 855 Series

In the NH/NT 855 series, the Captive Washer Cap Screw is a key component, ensuring that the engine’s various parts are securely fastened together. This is crucial for the performance and longevity of the engine.

QSN14 Series

The QSN14 series engines, including:

• QSN14 CM876 N103
• QSNT14 CM876 N102

also rely on the 3012468 part for secure fastening. This ensures that the engine can withstand the operational demands placed on it, maintaining stability and reliability.

The Captive Washer Cap Screw is integral to the functionality and durability of these Cummins engines, providing a dependable fastening solution across various engine models.

Role of Part 3012468 Captive Washer Cap Screw in Engine Systems

The 3012468 Captive Washer Cap Screw is integral to the assembly and securement of various engine components, ensuring the stability and efficiency of the engine system.

In the cylinder block, this screw is used to fasten base parts, providing a solid foundation for the engine’s operation. Its application here ensures that all subsequent components are mounted securely.

For the EBM-pump and associated water systems, the screw plays a role in attaching the pump to the cylinder block and other structural elements. This secure attachment is vital for the pump’s function in circulating water or other fluids within the engine.

The fan bracket relies on the 3012468 screw for attachment to the water pump, ensuring that the fan operates efficiently to cool the engine.

In the fuel system, the screw is employed to fasten the fuel supply tube and fuel tubing to the manifold, guaranteeing a leak-free connection that is essential for fuel delivery.

The manifold press tube also benefits from the secure fastening provided by this screw, maintaining the integrity of the manifold system.

For components like the turbocharger mounting and vibration damper, the 3012468 screw ensures these parts are firmly attached, contributing to the engine’s performance and longevity.

In water pump assemblies, whether it’s the water pump and idler or the water pump mounting, this screw is key in securing these components, ensuring they function correctly within the engine’s cooling system.

Overall, the 3012468 Captive Washer Cap Screw is a fundamental component in the securement and operation of various engine systems, facilitating the engine’s overall efficiency and reliability.

Conclusion

The 3012468 Captive Washer Cap Screw is a critical component in the maintenance and operation of commercial trucks, particularly in Cummins engines. Its design, which includes an integrated washer, simplifies the installation process and ensures consistent clamping force. The high-strength material used in its construction enhances its durability, making it suitable for long-term use in demanding environments. By following proper installation and maintenance guidelines, fleet operators and maintenance professionals can ensure the longevity and reliability of this Cummins part in their truck’s systems.