3903200
Hexagon Head Cap Screw
Cummins®

The Hexagon Head Cap Screw is a fundamental component in the maintenance and operation of commercial trucks. It is utilized for fastening various parts and assemblies, ensuring the structural integrity and functionality of the vehicle. Cummins, a renowned manufacturer in the commercial truck industry, produces a range of high-quality components, including the 3903200 Hexagon Head Cap Screw. This screw is designed to meet the demanding requirements of truck maintenance and operation, providing reliable performance and durability.

Basic Concepts of Hexagon Head Cap Screw

A Hexagon Head Cap Screw is a type of fastener characterized by its hexagonal head, which allows for efficient tightening and loosening using a wrench or socket. The screw’s design includes a threaded shaft that engages with the internal threads of a nut or a tapped hole, securing components together. In mechanical systems, cap screws are commonly used to fasten parts that require frequent disassembly or adjustment, making them ideal for maintenance-intensive applications like commercial trucks.

Purpose of the 3903200 Hexagon Head Cap Screw in Truck Operation

The 3903200 Hexagon Head Cap Screw by Cummins plays a specific role in the assembly and maintenance of commercial trucks. It is employed in various applications where secure fastening is required, such as attaching engine components, securing chassis parts, and fastening body panels. Its design ensures a tight and reliable connection, contributing to the overall safety and performance of the truck.

Key Features

The 3903200 Hexagon Head Cap Screw is crafted from high-quality materials, typically alloy steel, which provides excellent strength and durability. It features a coarse thread type, which offers a strong grip and resistance to loosening under vibration. The hexagonal head design allows for easy installation and removal using standard tools, enhancing efficiency during maintenance procedures.

Benefits

Using the 3903200 Hexagon Head Cap Screw offers several advantages. Its robust material composition and thread design contribute to enhanced strength and resistance to loosening, ensuring a secure connection in demanding truck applications. The ease of installation and removal facilitates quick and efficient maintenance, reducing downtime and improving operational efficiency.

Installation Guidelines

Proper installation of the 3903200 Hexagon Head Cap Screw is crucial for ensuring a secure fastening. Follow these steps for optimal results:

1. Clean the mating surfaces to remove any debris or contaminants.
2. Apply a thread locker or anti-seize compound if specified by the manufacturer.
3. Insert the screw into the tapped hole or nut.
4. Use a wrench or socket to tighten the screw to the recommended torque specification, ensuring a snug fit without over-tightening.

Troubleshooting and Maintenance

Common issues with Hexagon Head Cap Screws include loosening due to vibration and corrosion. To identify these issues, regularly inspect the screws for signs of movement or rust. Maintenance tips to prolong the lifespan of the screw include:

• Applying a thread locker to prevent loosening.
• Using corrosion-resistant coatings or materials.
• Regularly checking and tightening screws during routine maintenance.

Cummins: Manufacturer Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration systems, and aftermarket parts. With a strong reputation in the commercial truck industry, Cummins is known for its high-quality products and commitment to innovation. The company’s extensive product range and focus on customer satisfaction make it a preferred choice for truck components, including the 3903200 Hexagon Head Cap Screw.

Hexagon Head Cap Screw 3903200 in Cummins Engines

The Cummins Hexagon Head Cap Screw part number 3903200 is a critical component used across various Cummins engine models. This screw is integral to the assembly and maintenance of these engines, ensuring secure fastening and reliable performance. Below is a detailed overview of how this part fits into different Cummins engine families.

4B3.9 and 6B5.9 Engines

In the 4B3.9 and 6B5.9 engines, the 3903200 screw is utilized in several key areas, including securing engine blocks, cylinder heads, and various other components. Its robust design ensures that these parts remain tightly fastened under the high stress and temperatures typical of diesel engines.

6C8.3 and C8.3 G Engines

For the 6C8.3 and C8.3 G engines, the 3903200 screw is essential in maintaining the structural integrity of the engine. It is commonly used in the assembly of the engine block and other critical assemblies, providing the necessary strength and durability to withstand operational demands.

B3.9 G, B4.5, B5.9 G, and B5.9 GAS PLUS CM556 Engines

In the B3.9 G, B4.5, B5.9 G, and B5.9 GAS PLUS CM556 engines, the 3903200 screw plays a pivotal role in securing various engine components. Its application ranges from fastening the engine block to ensuring the proper alignment and stability of the cylinder heads.

C GAS PLUS CM556 and G5.9 CM558 Engines

The 3903200 screw is also integral to the C GAS PLUS CM556 and G5.9 CM558 engines. It is used extensively in the assembly of the engine block, cylinder heads, and other critical assemblies, ensuring that all parts are securely fastened and properly aligned.

G8.3, G8.3 CM558, and GTA8.3 CM558 Engines

In the G8.3, G8.3 CM558, and GTA8.3 CM558 engines, the 3903200 screw is employed in securing the engine block and other major components. Its use in these engines ensures that the engine maintains its structural integrity under high operational stresses.

ISB CM550, ISB5.9G CM2180, ISC CM554, and ISL CM554 Engines

The 3903200 screw is a key component in the ISB CM550, ISB5.9G CM2180, ISC CM554, and ISL CM554 engines. It is used in various applications, including securing the engine block, cylinder heads, and other critical assemblies, ensuring the engine operates reliably and efficiently.

ISL G CM2180, ISM CM570, ISM CM570/870, ISM CM876, and ISM11 CM876 SN Engines

In the ISL G CM2180, ISM CM570, ISM CM570/870, ISM CM876, and ISM11 CM876 SN engines, the 3903200 screw is used to secure the engine block and other major components. Its application in these engines ensures that all parts are tightly fastened and properly aligned, contributing to the engine’s overall performance and durability.

ISX12 CM2350 X102 and ISX12 G CM2180 EJ Engines

Finally, in the ISX12 CM2350 X102 and ISX12 G CM2180 EJ engines, the 3903200 screw is used in securing the engine block and other critical assemblies. Its use in these high-performance engines ensures that all components are securely fastened, providing the necessary strength and durability to withstand the demands of heavy-duty applications.

Role of Part 3903200 Hexagon Head Cap Screw in Various Engine System Components

Accessories and Wiring

Part 3903200 Hexagon Head Cap Screw is utilized in securing accessories and wiring to the engine assembly. It ensures that these components remain firmly attached, minimizing the risk of disconnection or damage during operation.

Brackets

This screw plays a significant role in attaching various brackets to the engine. Whether it’s a lifting bracket, shipping bracket, or gearshift/lifting bracket, the Hexagon Head Cap Screw provides the necessary stability and support.

Cleaner and Air Cover

In the air cleaning system, the screw is employed to secure the air cover to the engine block. This ensures that the air filter remains in place, allowing for efficient filtration of incoming air.

Cylinder Block and Crankshaft Gear Remover

When working with the cylinder block or using a crankshaft gear remover, the Hexagon Head Cap Screw is essential for securing components in place. This facilitates easier and safer removal or installation processes.

Enclosure and Product

For engine enclosures and product assemblies, this screw ensures that all parts are held together securely. This is particularly important for maintaining the structural integrity of the engine housing.

Engine Assembly and Mounting

In engine assembly and mounting scenarios, the Hexagon Head Cap Screw is used to fasten the engine to its mounting points. This is vital for ensuring that the engine remains stable during operation.

Heat Exchanger and Full Flow Oil Filter

The screw is also instrumental in securing the heat exchanger and full flow oil filter to the engine. Proper attachment of these components is essential for efficient heat exchange and oil filtration.

Fuel System Assembly and Repower Kit

Within the fuel system assembly and repower kits, the Hexagon Head Cap Screw is used to secure fuel lines, filters, and other components. This ensures that the fuel system operates smoothly and without leaks.

Keel Cooler and Lubricating Oil Pump

For keel coolers and lubricating oil pumps, the screw is used to attach these components to the engine. This ensures that cooling and lubrication systems function effectively.

Corrosion Resistor and Fuel Water Separator

In systems involving corrosion resistors and fuel water separators, the Hexagon Head Cap Screw helps in securing these components, ensuring they perform their intended functions without failure.

Short Engine Kit and Engine Support

In short engine kits and engine support systems, the screw is used to attach support brackets and other components. This is essential for maintaining the structural integrity and operational stability of the engine.

Front Engine Support and Utility Cart

Finally, for front engine support and utility cart applications, the Hexagon Head Cap Screw is used to secure various components, ensuring that the engine and its accessories remain stable and functional.

Conclusion

The 3903200 Hexagon Head Cap Screw by Cummins is a critical component in the maintenance and operation of commercial trucks and various Cummins engine models. Its robust design, high-quality materials, and ease of installation make it an essential part for ensuring the structural integrity and reliable performance of truck and engine assemblies. Proper installation and maintenance of this screw are vital for preventing common issues such as loosening and corrosion, thereby enhancing the overall safety and efficiency of the vehicle.