3042889
Captive Washer Cap Screw
Cummins®

The Captive Washer Cap Screw, identified by Part #3042889, is a component manufactured by Cummins, a well-established name in the automotive and heavy-duty truck industry. This screw is integral to the maintenance and operation of commercial trucks, providing a reliable means of securing various components and contributing to the overall structural integrity of the vehicle.

Basic Concepts

A Captive Washer Cap Screw is a type of fastener that includes an integrated washer. This design allows for efficient installation and reduces the likelihood of losing the washer during assembly ¹. The screw functions by threading into a pre-tapped hole, with the captive washer distributing the load across a larger surface area, which helps prevent damage to the fastened material. Its application spans various mechanical assemblies, particularly in environments where vibration and movement are common.

Role in Truck Operation

In the context of commercial trucks, the 3042889 Captive Washer Cap Screw plays a significant role in both the operation and maintenance of the vehicle. It is used to secure components that are subject to significant stress and vibration, ensuring that these parts remain firmly in place. This is particularly important in maintaining the structural integrity of the truck, as loose components can lead to increased wear, potential failure, and safety hazards ².

Key Features

The 3042889 Captive Washer Cap Screw is designed with several features that enhance its functionality and durability. Its construction typically includes high-strength materials that can withstand the demanding conditions found in commercial truck environments. The integrated washer is a notable feature, providing additional surface area for load distribution and reducing the risk of component damage. The screw’s design also facilitates easy installation, which is beneficial during maintenance procedures ³.

Benefits

Utilizing the 3042889 Captive Washer Cap Screw offers several advantages. Its design contributes to improved reliability by ensuring that components are securely fastened, even in dynamic environments. The ease of installation reduces maintenance time and labor costs, while the durability of the screw enhances the overall performance and longevity of the truck’s components. In demanding environments, these screws help maintain operational efficiency and safety.

Troubleshooting and Maintenance

Common issues with Captive Washer Cap Screws may include corrosion, wear, or loosening over time. Regular inspection and maintenance are recommended to identify and address these issues promptly. Maintenance practices should include checking for signs of wear or damage, ensuring proper torque during installation, and replacing screws that show signs of deterioration. These practices help ensure the longevity and optimal performance of the screws and the components they secure.

About Cummins

Cummins is a renowned manufacturer in the automotive and heavy-duty truck industry, with a history of producing high-quality components. The company’s reputation is built on a commitment to innovation, quality, and customer satisfaction. Cummins’ products, including the 3042889 Captive Washer Cap Screw, are designed to meet the rigorous demands of commercial truck applications, reflecting the company’s dedication to excellence in the industry.

Captive Washer Cap Screw 3042889 in Cummins Engines

The Captive Washer Cap Screw part number 3042889, manufactured by Cummins, is a critical component in various Cummins engine models. This part is integral to the assembly and operation of these engines, ensuring secure fastening and stability.

G855, K19, KTA19GC, KTA19GC CM558

In the G855, K19, KTA19GC, and KTA19GC CM558 engines, the 3042889 screw is used in several key areas. It plays a vital role in securing various engine components, ensuring that parts remain tightly fastened under operational stresses. This screw is particularly important in maintaining the integrity of the engine’s structure and performance.

L10 CELECT, N14 CELECT, N14 CELECT PLUS, N14 MECHANICAL

For the L10 CELECT, N14 CELECT, N14 CELECT PLUS, and N14 MECHANICAL engines, the 3042889 screw is utilized in numerous applications. It is essential for fastening components that are subjected to high mechanical loads and vibrations. The screw’s design ensures that it remains securely in place, contributing to the overall reliability and longevity of these engines.

QSK19 CM2350 K105, QSK19 CM2350 K114, QSK19 CM2350 K144G, QSK19 CM500, QSK19 CM850 MCRS, QSK19G, QSN14 CM876 N103

In the QSK19 series engines, including the QSK19 CM2350 K105, QSK19 CM2350 K114, QSK19 CM2350 K144G, QSK19 CM500, QSK19 CM850 MCRS, QSK19G, and QSN14 CM876 N103, the 3042889 screw is used in various critical fastening applications. These engines are designed for heavy-duty operations, and the screw’s robust construction ensures that it can withstand the demanding conditions these engines operate under.

V28, V903, VTA903 CM2250 V105

For the V28, V903, and VTA903 CM2250 V105 engines, the 3042889 screw is employed in several key areas. It is essential for securing components that are critical to the engine’s performance and durability. The screw’s design ensures that it can maintain a tight and secure fit, even under the high stresses encountered in these engines.

Role of Part 3042889 Captive Washer Cap Screw in Engine Systems

The Part 3042889 Captive Washer Cap Screw is integral to the assembly and securement of various components within engine systems. Its application ensures the stability and integrity of connections across multiple parts, facilitating efficient engine operation.

In the aftercooler and aftercooler top level number assemblies, this screw plays a role in fastening components that manage the cooling of compressed air, enhancing engine efficiency. Similarly, in the cylinder head and cylinder head mounting, it secures the head to the engine block, ensuring a tight seal and proper function of the combustion chamber.

For the engine cast cooler and engine oil cooler, the screw is used to attach cooling fins and passages, critical for maintaining optimal engine temperature. In the filter kit and guard package, it helps in securing protective elements that shield sensitive components from debris and damage.

Within the heat exchanger and intake manifold, the screw ensures that the components are firmly attached, allowing for effective heat transfer and smooth air flow into the engine. In the lubricating oil (top level assembly) cooler and lubricating oil cooler (top level assembly), it aids in the secure attachment of cooling elements that protect the lubricating oil from overheating.

The screw is also utilized in the lubricating oil top level assembly cooler and oil cooler, ensuring that cooling components are reliably fastened, which is essential for maintaining the viscosity and performance of the lubricating oil. In the oil cooler rear support and oil fill location, it provides the necessary support and securement for these critical oil management components.

For the oil filler and oil mounting cooler, the screw ensures that these parts are correctly positioned and secured, facilitating easy oil addition and effective cooling. In the performance parts and transfer connection mounting cover, it plays a role in securing enhancements and covers that improve engine performance and protect internal components.

In the turbocharger arrangement, the screw is used to fasten components that increase engine power and efficiency. For the valve cover assembly and valve cover mounting assembly, it ensures that the valve cover is securely attached, protecting the valve train components.

Lastly, in the VT903 short block kit, the screw is essential for assembling and securing the short block components, which form the core of the engine.

Conclusion

The 3042889 Captive Washer Cap Screw is a vital component in the maintenance and operation of commercial trucks and Cummins engines. Its design, featuring an integrated washer, ensures efficient installation and reliable fastening, even in dynamic environments. The screw’s high-strength materials and robust construction make it suitable for demanding conditions, contributing to the overall performance and longevity of the vehicle. Regular maintenance and proper installation practices are essential to ensure the screw’s optimal performance and the safety and efficiency of the truck or engine it serves.