3682386
Studded Captive Washer Screw
Cummins®

The Cummins 3682386 Studded Captive Washer Screw is a specialized fastener designed for use in heavy-duty truck applications. Its purpose is to provide secure fastening in environments where traditional screws may fail due to vibration, high stress, or exposure to harsh conditions. This screw plays a role in maintaining the structural integrity and reliability of truck components.

Basic Concepts

Studded captive washer screws are designed with a threaded stud and an integrated washer that remains captive to the screw. This design ensures that the washer does not become dislodged during installation or operation, providing a more secure fastening solution. These screws are commonly used in commercial trucks to secure components that are subject to significant vibration and stress, such as engine mounts, exhaust systems, and chassis parts ¹.

Purpose and Role

The Cummins 3682386 Studded Captive Washer Screw is specifically designed to secure various components within heavy-duty trucks. Its role is to ensure that parts remain firmly attached, even under demanding conditions. By providing a robust fastening solution, this screw helps maintain the structural integrity of critical truck systems, contributing to overall vehicle reliability and safety ².

Key Features

The Cummins 3682386 Studded Captive Washer Screw features a studded design that integrates a captive washer, ensuring that the washer stays in place during installation and use. The screw is typically made from high-strength materials, such as alloy steel, to withstand the rigors of heavy-duty applications. The studded design allows for easy installation and removal, while the captive washer provides additional security against loosening ³.

Benefits

The Cummins 3682386 Studded Captive Washer Screw offers several advantages. Its design enhances fastening security by preventing the washer from becoming dislodged. The screw’s resistance to vibration makes it ideal for use in environments where traditional screws may fail. Additionally, its durable construction ensures longevity, even in demanding applications.

Installation Process

Proper installation of the Cummins 3682386 Studded Captive Washer Screw involves several steps. First, ensure that the mating surface is clean and free of debris. Next, align the screw with the designated hole and begin threading it in by hand to avoid cross-threading. Once started, use a torque wrench to tighten the screw to the manufacturer’s specified torque settings. It is important to avoid over-tightening, which can damage the screw or the component being fastened.

Maintenance Tips

To ensure optimal performance and longevity of the Cummins 3682386 Studded Captive Washer Screw, regular maintenance is recommended. Inspect the screw periodically for signs of wear, corrosion, or loosening. Lubricating the screw with a suitable grease can help reduce friction and prevent seizing. If any damage is detected, replace the screw promptly to maintain the integrity of the fastened components.

Troubleshooting Common Issues

Common issues with the Cummins 3682386 Studded Captive Washer Screw include loosening, corrosion, and damage. If the screw becomes loose, re-tighten it to the specified torque settings. Corrosion can be addressed by cleaning the screw and applying a corrosion-resistant coating. If the screw is damaged, replace it with a new one to ensure continued secure fastening.

Compatibility and Applications

The Cummins 3682386 Studded Captive Washer Screw is compatible with a variety of truck models and is used in different truck systems and components. Its versatile design makes it suitable for securing engine mounts, exhaust systems, and chassis parts, among other applications.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and quality, Cummins has established a strong reputation in the automotive industry. The company’s product offerings include a wide range of components and systems designed to enhance the performance and reliability of commercial vehicles. The Cummins 3682386 Studded Captive Washer Screw is part of this comprehensive portfolio, reflecting the company’s commitment to providing high-quality, reliable solutions for heavy-duty applications.

Studded Captive Washer Screw (Part 3682386) in Cummins Engines

The Studded Captive Washer Screw, identified by the part number 3682386, is a critical component used in various Cummins engines. This part is essential for securing certain engine components and ensuring the structural integrity of the engine. Below is a detailed description of how this part fits into the specified Cummins engines.

ISM CM876 and QSM11 CM876

The Studded Captive Washer Screw is utilized in the ISM CM876 and QSM11 CM876 engines for fastening various components. These engines, known for their robust design, require reliable fastening solutions to maintain operational efficiency and durability. The screw ensures that parts remain securely in place under high stress conditions.

ISX CM870, ISX CM871, and QSX15 CM2250

In the ISX CM870, ISX CM871, and QSX15 CM2250 engines, the Studded Captive Washer Screw is used to secure critical engine components. These engines are designed for heavy-duty applications, and the screw’s design helps in maintaining the alignment and stability of parts that are subject to significant mechanical forces.

ISX12/ISX11.9 CM2250 and QSX15 CM2250 ECF

For the ISX12/ISX11.9 CM2250 and QSX15 CM2250 ECF engines, the Studded Captive Washer Screw is integral to the fastening of components that are exposed to high temperatures and pressures. The screw’s studded design provides a secure hold, ensuring that parts remain fixed in their positions, which is crucial for the engines’ performance and longevity.

ISX15 CM2250 and ISX15 CM2350 X101

In the ISX15 CM2250 and ISX15 CM2350 X101 engines, the Studded Captive Washer Screw is employed to secure various engine components, including those in the exhaust and intake systems. The screw’s design allows for easy installation and removal, which is beneficial during maintenance and repair operations.

QSX15 CM2350 X105

The QSX15 CM2350 X105 engine also utilizes the Studded Captive Washer Screw for fastening components that are critical to the engine’s operation. This engine is designed for high-performance applications, and the screw’s robust design ensures that parts remain securely fastened under demanding conditions.

In summary, the Studded Captive Washer Screw (Part 3682386) is a vital component in various Cummins engines, ensuring that critical parts remain securely fastened and aligned. Its use across different engine models highlights its importance in maintaining the structural integrity and performance of Cummins engines.

Role of Part 3682386 Studded Captive Washer Screw in Engine Systems

Engine Oil Cooler

The 3682386 Studded Captive Washer Screw is integral in securing the connections within the engine oil cooler system. It ensures that the oil passages remain sealed and the oil flow is unimpeded, which is essential for maintaining optimal engine temperature. This screw is used to fasten the cooler to the engine block or other mounting points, providing a reliable and durable connection that can withstand the pressures and temperatures of the oil system.

Exhaust Recirculation

In the Exhaust Recirculation (EGR) system, the 3682386 Studded Captive Washer Screw plays a significant role in maintaining the integrity of the EGR valve and its associated piping. By securing the EGR valve to the engine, it ensures that the recirculated exhaust gases are effectively mixed with the intake air, reducing nitrogen oxides (NOx) emissions. The screw’s design helps in withstanding the high temperatures and corrosive nature of the exhaust gases, ensuring a leak-free connection.

Injector Plumbing

For injector plumbing, the 3682386 Studded Captive Washer Screw is utilized to secure fuel lines and injectors to the engine block or fuel rail. This ensures that the fuel delivery system remains pressurized and leak-free, which is vital for precise fuel injection and engine performance. The screw’s studded captive washer design provides additional security against vibration and movement, which are common in the dynamic environment of an engine compartment.

Conclusion

The Cummins 3682386 Studded Captive Washer Screw is a critical component in heavy-duty truck applications, providing secure fastening in demanding environments. Its design, featuring a studded captive washer, ensures that the washer remains in place during installation and use, enhancing fastening security. The screw’s high-strength material and resistance to vibration make it ideal for use in various truck systems and components, contributing to the overall reliability and safety of the vehicle. Proper installation, regular maintenance, and prompt troubleshooting of common issues are essential to ensure the optimal performance and longevity of this part.