3820710
Captive Washer Cap Screw
Cummins®

The Cummins 3820710 Captive Washer Cap Screw is a specialized fastener designed for use in commercial trucks. Cummins, a prominent name in the commercial truck industry, produces a range of components that contribute to the efficiency, reliability, and durability of heavy-duty vehicles. This part is integral to the assembly and maintenance of commercial trucks.

Basic Concepts

A Captive Washer Cap Screw is a type of fastener that incorporates an integrated washer within its design. This feature allows the washer to remain captive on the screw, preventing it from being misplaced during assembly. The screw threads into a pre-drilled hole, securing two or more components together. The integrated washer distributes the load of the screw across a larger surface area, reducing the risk of damage to the components being fastened and enhancing the overall security of the joint.

Purpose of the 3820710 Captive Washer Cap Screw

In commercial trucks, the 3820710 Captive Washer Cap Screw secures various components and ensures structural integrity. It is used in applications requiring reliable fastening, such as attaching body panels, engine components, and other critical parts. By providing a secure and stable connection, the screw contributes to the safe and efficient operation of the vehicle.

Key Features

The 3820710 Captive Washer Cap Screw is characterized by several design and construction features that enhance its performance. It is typically made from high-strength materials, such as alloy steel, to withstand the rigors of commercial truck operation. The screw features a specific thread type, ensuring a tight and secure fit in the corresponding holes. The integrated washer provides additional load distribution and corrosion resistance, further enhancing the screw’s functionality.

Benefits

The use of the 3820710 Captive Washer Cap Screw offers several advantages. Its design simplifies the assembly process by eliminating the need for separate washers, which can be easily lost or misplaced. This results in improved assembly efficiency and reduced downtime during maintenance procedures. Additionally, the integrated washer enhances fastening security by providing a more uniform load distribution, which can help prevent component damage and screw loosening over time.

Installation Process

Proper installation of the 3820710 Captive Washer Cap Screw is vital to ensure optimal performance and longevity. The installation process involves threading the screw into a pre-drilled hole until the desired torque is achieved. It is important to use the correct tools and follow torque specifications provided by the manufacturer to avoid over-tightening, which can lead to damage, or under-tightening, which can compromise the security of the fastening.

Troubleshooting and Maintenance

Common issues associated with Captive Washer Cap Screws include corrosion, wear, and loosening. Regular inspection and maintenance can help identify these issues early and prevent more serious problems. Diagnostic tips include checking for signs of corrosion or damage to the screw and washer, ensuring that the screw is properly torqued, and replacing any screws that show signs of wear or damage. Proper maintenance practices, such as keeping the fastening area clean and free of debris, can also prolong the service life of the 3820710 screw.

Safety Considerations

When working with the 3820710 Captive Washer Cap Screw, it is important to observe several safety practices and precautions. This includes using the correct tools for installation and removal, following torque specifications to avoid over-tightening or under-tightening, and wearing appropriate personal protective equipment (PPE) to protect against injury. Proper handling of the screw, including avoiding contact with corrosive substances and storing it in a dry, secure location, is also important to maintain its integrity and performance.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a strong reputation in the commercial truck industry, Cummins is known for its commitment to quality and innovation. The company’s extensive range of components, including the 3820710 Captive Washer Cap Screw, reflects its dedication to providing reliable and high-performance solutions for the heavy-duty truck market. Cummins’ focus on customer satisfaction and continuous improvement ensures that its products meet the demanding requirements of commercial truck applications.

Compatibility with Cummins Engines

The 3820710 Captive Washer Cap Screw is compatible with a variety of Cummins engine models, including:

• ISL9 CM2150 SN, ISM CM570, ISM CM570/870, ISM CM876, ISM11 CM876 SN: Used in the fuel system, turbocharging system, and other vital subsystems.
• L10 GAS, L10 MECHANICAL: Used in the assembly of internal and external components.
• M11 CELECT PLUS, M11 MECHANICAL: Used in the exhaust system, fuel injection system, and other critical areas.
• QSB6.7 CM850(CM2850), QSB7 CM2880 B117: Used in the cooling system, lubrication system, and other essential areas.
• QSM11 CM570, QSM11 CM876, QSNT14 CM876 N102: Used in the assembly of internal and external components.

Role of the 3820710 Captive Washer Cap Screw in Engine Systems

The 3820710 Captive Washer Cap Screw is instrumental in securing various components within engine systems, ensuring stability and proper function. It is used in:

• Accessory Drive Kit: Fastening components that drive accessories like the alternator and air conditioning compressor.
• Alternator Location: Securing the alternator to the engine block.
• Arrangement for Lifting: Securing parts essential for safely lifting the engine during maintenance or repair.
• Turbocharger Arrangement: Fastening the turbocharger to the engine.
• Belt Tensioner Bracket and Belt Tensioner Kit: Ensuring the tensioner is properly mounted.
• Cylinder Block: Securing various covers and housings, such as the front gear cover and front gear housing.
• Refrigerant Compressor Connection: Securing the compressor to the engine.
• Air Intake Connection: Mounting the air intake manifold.
• Water Pump Drive and Fan Drive Systems: Securing the pump and fan to the engine.
• Idler Pulley Mounting: Ensuring the pulley remains in the correct position to maintain belt tension.
• Radiator Plumbing and Exhaust Recirculation Systems: Securing components vital for engine cooling and emissions control.
• Refrigerant Compressor Drive Kit: Fastening the drive components.

Overall, the 3820710 Captive Washer Cap Screw is a fundamental component in maintaining the structural integrity and operational efficiency of various engine systems.

Conclusion

The 3820710 Captive Washer Cap Screw by Cummins is a critical component in the assembly and maintenance of commercial trucks. Its design, featuring an integrated washer, simplifies the assembly process and enhances fastening security. Proper installation, regular maintenance, and adherence to safety practices are essential to ensure the optimal performance and longevity of this part. Cummins’ commitment to quality and innovation is reflected in the reliability and high performance of the 3820710 screw, making it a valuable component in the heavy-duty truck market.