3012470
Captive Washer Cap Screw
Cummins®

The 3012470 Captive Washer Cap Screw by Cummins is a specialized fastener designed for use in commercial truck maintenance and operation. This screw is integral to ensuring the secure assembly of various components within the truck’s structure. Its design and functionality contribute to the overall reliability and performance of commercial vehicles.

Basic Concepts of Captive Washer Cap Screws

A captive washer cap screw is a type of fastener that includes an integrated washer held in place by a groove or detent in 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. Captive washer cap screws are commonly used in mechanical assemblies where consistent and secure fastening is required ¹.

Purpose and Role in Truck Operation

The 3012470 Captive Washer Cap Screw plays a specific role in the operation and maintenance of commercial trucks. It is utilized in various applications within the truck’s structure, including the attachment of body panels, securing of engine components, and fastening of chassis parts. The screw’s design ensures a tight and reliable connection, which is vital for the safe and efficient operation of the vehicle ².

Key Features

The 3012470 Captive Washer Cap Screw boasts several key features that enhance its functionality and durability. These include a precision-machined shank, a high-strength material composition typically consisting of alloy steel, and a corrosion-resistant coating. The integrated washer is designed to distribute pressure evenly, reducing the risk of damage to the fastened materials. Additionally, the screw’s threading is optimized for easy installation and secure fastening ³.

Benefits

Using the 3012470 Captive Washer Cap Screw in truck maintenance offers several benefits. The integrated washer simplifies the installation process, reducing the likelihood of washer loss and ensuring consistent fastening. The high-strength material and corrosion-resistant coating contribute to the screw’s durability, leading to long-term cost savings by minimizing the need for frequent replacements. Moreover, the secure fastening provided by the screw enhances the reliability of the truck’s components.

Installation Process

Proper installation of the 3012470 Captive Washer Cap Screw involves several steps to ensure secure and effective fastening. Begin by selecting the appropriate drill bit size for the pilot hole, ensuring it matches the screw’s diameter. Drill the pilot hole at the desired location, taking care to maintain perpendicular alignment. Insert the screw into the pilot hole and use a torque wrench to tighten it to the manufacturer’s specified torque settings. This ensures that the screw is securely fastened without over-tightening, which could damage the materials or the screw itself.

Troubleshooting Common Issues

Common problems associated with captive washer cap screws include loosening over time, corrosion, and damage to the washer. To address these issues, regularly inspect the screws for signs of wear or corrosion. If a screw appears loose, re-tighten it to the specified torque settings. In cases of severe corrosion or damage, replace the screw with a new one to maintain the integrity of the fastening. Ensuring that the screws are properly installed and maintained will help prevent these issues and ensure optimal performance.

Maintenance Tips

Regular maintenance of the 3012470 Captive Washer Cap Screw is important for ensuring its longevity and performance. Inspect the screws periodically for signs of wear, corrosion, or loosening. Clean the screws and surrounding areas to remove any debris or contaminants that could affect their performance. If a screw shows significant wear or damage, consider replacing it to maintain the secure fastening of the truck’s components. Adhering to these maintenance practices will help ensure the continued reliability of the fastening system.

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 is committed to innovation, quality, and customer satisfaction. The company’s product range includes engines for on-highway and off-highway applications, as well as filtration and power generation solutions. Cummins’ dedication to excellence is evident in its comprehensive lineup of high-quality components, including the 3012470 Captive Washer Cap Screw.

Cummins Part 3012470: Captive Washer Cap Screw in Engine Applications

The Cummins part 3012470, a Captive Washer Cap Screw, is a critical component in the assembly and maintenance of various engine models. This part is integral to ensuring the secure fastening of engine components, contributing to the overall reliability and performance of the engines.

Cummins Engines Utilizing Part 3012470

4B3.9, 6B5.9, 6C8.3, G855, K19, K38, K50, KTA19GC, L10 MECHANICAL, N14 CELECT, N14 CELECT PLUS, N14 MECHANICAL, NH/NT 855, QSK19 CM2350 K114, QSK19 CM500, QSK19 CM850 MCRS, QSK19G, QSNT14 CM876 N102, V28, V903, VTA903 CM2250 V105

The Captive Washer Cap Screw (part 3012470) is utilized across a broad spectrum of Cummins engines, including the 4B3.9, 6B5.9, and 6C8.3 series. These engines are known for their robust construction and are often used in heavy-duty applications, where the reliability of fasteners is paramount.

N14 Series Engines

In the N14 series, which includes the N14 CELECT, N14 CELECT PLUS, and N14 MECHANICAL engines, the Captive Washer Cap Screw plays a vital role in maintaining the integrity of the engine’s internal and external components. The N14 engines are widely used in various industries, from construction to agriculture, and the use of this screw ensures that these engines can withstand the rigors of continuous operation.

QSK Series Engines

The QSK series engines, such as the QSK19 CM2350 K114, QSK19 CM500, QSK19 CM850 MCRS, and QSK19G, also incorporate the Captive Washer Cap Screw. These engines are designed for high-performance applications and require components that can endure significant stress and vibration. The screw’s design ensures that critical engine parts remain securely fastened, contributing to the engine’s overall durability and efficiency.

QSNT Series Engines

The QSNT14 CM876 N102 engine utilizes the Captive Washer Cap Screw to maintain the alignment and stability of its components. This engine is engineered for applications that demand high power and reliability, and the screw’s role in securing these components is essential for optimal performance.

V Series Engines

The V28, V903, and VTA903 CM2250 V105 engines also benefit from the use of the Captive Washer Cap Screw. These engines are known for their versatility and are used in a range of applications, from marine to industrial. The screw’s design ensures that these engines can operate reliably under various conditions.

In summary, the Cummins part 3012470, a Captive Washer Cap Screw, is a fundamental component in the assembly and maintenance of a wide range of Cummins engines. Its use across different engine models underscores its importance in ensuring the secure fastening of engine components, contributing to the overall reliability and performance of these engines.

Role of Part 3012470 Captive Washer Cap Screw in Engine Systems

The 3012470 Captive Washer Cap Screw is integral to the secure assembly and operation of various engine components. It ensures the stability and integrity of connections within the engine system, facilitating efficient performance and reliability.

Alternator Guard and Arrangement

In the alternator guard and its arrangement, the 3012470 Captive Washer Cap Screw plays a key role in fastening the guard to the engine frame. This secure attachment protects the alternator from debris and environmental factors, ensuring consistent electrical output.

Auxiliary Cooling System

For the auxiliary cooling system, this screw is used to mount components such as the bypass filter mounting bracket and the front engine guard. Its application here ensures that cooling elements remain firmly in place, promoting effective heat dissipation and engine temperature regulation.

Fuel System Components

Within the fuel system, the 3012470 Captive Washer Cap Screw is employed in the fuel control module, fuel filter location, and fuel supply tube assemblies. It secures these components, preventing leaks and ensuring a steady fuel supply to the engine.

Lubrication and Oil Systems

In the lubricating oil suction hose and oil filler and gauge bracket, this screw ensures that connections are tight and secure. This is essential for maintaining proper oil flow and pressure, which are vital for engine lubrication and performance.

Noise Reduction and Structural Integrity

The noise side kit and hose support benefit from the use of this screw to reduce vibrations and noise. By securing these components, it helps maintain a quieter operating environment and structural integrity within the engine bay.

Governor and Throttle Control

The Woodward PSG governor and throttle control mechanisms utilize the 3012470 Captive Washer Cap Screw to ensure precise and reliable operation. Secure mounting of these components is essential for accurate engine speed and power control.

Plumbing and Corrosion Resistance

In plumbing corrosion resistance applications, this screw is used to fasten components such as the fuel drain and fuel drain tubing. Its role here is to prevent leaks and ensure the longevity of the plumbing system by resisting corrosion.

Comprehensive Engine Kits

In comprehensive engine kits like the VT903 short block kit, the 3012470 Captive Washer Cap Screw is utilized throughout various sub-assemblies. Its consistent application across different components ensures the kit’s overall reliability and performance.

Water Outlet Flange

Finally, in the water outlet flange, this screw secures the flange to the engine block, ensuring a leak-free connection. This is essential for maintaining the engine’s cooling system efficiency and preventing coolant loss.

The 3012470 Captive Washer Cap Screw’s versatile application across these engine components underscores its importance in maintaining the engine’s structural integrity, operational efficiency, and overall performance.

Conclusion

The 3012470 Captive Washer Cap Screw by Cummins is a critical component in the maintenance and operation of commercial trucks and various engine systems. Its design, featuring an integrated washer and high-strength material, ensures secure and reliable fastening of components. The screw’s application across different engine models and systems highlights its importance in maintaining structural integrity, operational efficiency, and overall performance. Regular maintenance and proper installation are essential to maximize the benefits and longevity of this Cummins part.