3920344
Studded Flange Cap Screw
Cummins®

The 3920344 Studded Flange Cap Screw is a specialized fastener produced by Cummins, a well-established manufacturer in the commercial truck industry. This component is designed for use in commercial trucks, where it plays a significant role in ensuring the secure attachment of various parts and assemblies.

Basic Concepts of Studded Flange Cap Screws

A studded flange cap screw is a type of fastener that includes a threaded stud and a flanged head. The stud provides a continuous thread that can be used with nuts or tapped holes, while the flange offers additional surface area for torque application and prevents the screw from being driven too far into the material. These screws are commonly used in applications requiring high strength and resistance to vibration ¹.

Role of the 3920344 Studded Flange Cap Screw in Truck Operation

This Cummins part is integral to the operation and maintenance of commercial trucks. It is used to secure critical components and assemblies, ensuring they remain firmly in place under various operating conditions. This screw helps maintain the structural integrity of the truck, contributing to safety and performance.

Key Features

The 3920344 Studded Flange Cap Screw is crafted from high-quality materials, typically alloy steel, to ensure durability and strength. Its design includes a hexagonal flange head that allows for easy tightening and loosening using a wrench or socket. The screw also features a threaded stud that can be used with nuts or directly into tapped holes, providing versatility in application.

Benefits of Using the 3920344 Studded Flange Cap Screw

Utilizing this part offers several advantages. Its robust construction ensures long-lasting performance, even under demanding conditions. The flange head design allows for efficient torque application, reducing the risk of over-tightening or stripping. Additionally, the screw’s resistance to vibration helps maintain a secure connection over time.

Installation Process

To install the 3920344 Studded Flange Cap Screw, begin by ensuring the mating surface is clean and free of debris. Align the screw with the designated hole or tapped area. Use a wrench or socket to tighten the screw gradually, applying even pressure to avoid cross-threading. Ensure the screw is tightened to the manufacturer’s specified torque settings to achieve optimal performance and longevity.

Troubleshooting Common Issues

Common issues with studded flange cap screws include loosening due to vibration, corrosion, and damage from over-tightening. To address these problems, regularly inspect the screws for signs of wear or corrosion. If loosening is detected, re-tighten the screw to the proper torque specification. In cases of corrosion, clean the affected area and consider applying a corrosion-resistant coating. If the screw is damaged, replace it with a new one to maintain structural integrity.

Maintenance Tips

To extend the lifespan of the 3920344 Studded Flange Cap Screw, perform regular inspections to check for signs of wear, corrosion, or loosening. Clean the screw and surrounding area to remove any debris or contaminants. Apply a corrosion-resistant coating if operating in harsh environments. Follow the manufacturer’s torque specifications during installation and re-tightening to prevent damage.

Cummins: A Brief Overview

Cummins is a renowned manufacturer in the commercial truck industry, known for its high-quality engines, components, and systems. With a history spanning several decades, Cummins has established a strong reputation for reliability, performance, and innovation. The company offers a wide range of products designed to meet the demanding needs of commercial trucking, including engines, powertrain components, and aftermarket parts.

Cummins Engine Compatibility with Part 3920344

The Studded Flange Cap Screw, part number 3920344, manufactured by Cummins, is designed to fit a variety of Cummins engines. This part is integral in securing flanges and ensuring a tight seal, which is crucial for maintaining engine performance and safety. Below is a detailed look at the compatibility of this part with various Cummins engines:

ISB Series Engines

• ISB3.9 CM2220 B107
• ISB5.9 CM2880 B127
• ISB5.9G CM2180

The ISB series engines, known for their reliability and efficiency, utilize the Studded Flange Cap Screw to secure flanges in various applications. This ensures that the flanges remain tightly fastened, preventing leaks and maintaining the structural integrity of the engine.

QSB Series Engines

• QSB3.9 30 CM550
• QSB3.9 CM2880 B138
• QSB5.9 30 CM550
• QSB5.9 CM2880 B139

The QSB series engines, often used in agricultural and construction equipment, also benefit from the use of the Studded Flange Cap Screw. This part is essential in securing flanges that are subject to high stress and vibration, ensuring that the engine components remain securely fastened and operational.

B Series Engines

• B3.9 G
• B4.5
• B5.9 CM2670 B166C
• B5.9 G
• B5.9 GAS PLUS CM556

The B series engines, which are commonly used in a variety of industrial applications, also require the Studded Flange Cap Screw for securing flanges. This part ensures that flanges are tightly fastened, which is critical for maintaining the performance and safety of these engines.

4B and 6B Series Engines

• 4B3.9
• 6B5.9

The 4B and 6B series engines, known for their robust design and durability, also utilize the Studded Flange Cap Screw. This part is crucial in securing flanges that are subject to high pressure and temperature, ensuring that the engine components remain securely fastened and operational.

By ensuring that the flanges are tightly fastened, the Studded Flange Cap Screw plays a vital role in the overall performance and safety of these engines. This part is essential for maintaining the integrity of the engine’s components and ensuring that the engine operates efficiently and reliably.

Role of Part 3920344 Studded Flange Cap Screw in Engine Systems

The 3920344 studded flange 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 safety.

Air Heater Starting System

In the air heater starting system, the 3920344 screw is used to fasten the air heater to the engine block. This secure attachment is essential for the heater to function correctly, providing the necessary preheat to the air intake for smoother engine starts in cold conditions.

Valve Cover and Arrangement

The screw plays a significant role in attaching the valve cover to the cylinder head. This connection is vital for maintaining the seal that prevents oil leaks and ensures the valve cover remains in place under the engine’s operational stresses.

Campaign Kit Integration

Within campaign kits, which often include modifications or upgrades to engine components, the 3920344 screw is employed to secure new parts or adjustments. This ensures that the modifications are firmly in place, enhancing the engine’s performance and reliability.

Fuel Filter Mounting

For the fuel filter mounting, the screw is used to attach the fuel filter housing to the engine or frame. This secure mounting is important for the filter’s stability, ensuring it can effectively remove contaminants from the fuel without shifting or becoming dislodged.

Plumbing and Air Fuel Control

In the plumbing of the air fuel control system, the 3920344 screw helps in securing connections between various components. This ensures a tight seal, preventing leaks and maintaining the precise air-fuel mixture necessary for optimal engine combustion.

Fuel Shutoff Valve

The screw is also utilized in the assembly of the fuel shutoff valve. By securely fastening the valve components, it ensures that the valve can reliably control the fuel flow to the engine, which is essential for safe operation and emergency shutdowns.

Shield and Heat Management

In applications involving shields and heat management components, the screw is used to attach heat shields or insulation materials. This secure attachment helps in managing engine temperatures and protecting nearby components from excessive heat.

Conclusion

Overall, the 3920344 studded flange cap screw is a versatile fastener that contributes to the secure and efficient operation of various engine systems. Its role in maintaining connections and ensuring component stability is fundamental to the engine’s performance and durability.