3678882
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3678882 and manufactured by Cummins, is a specialized fastener designed for use in commercial trucks. This screw plays a role in ensuring the structural integrity and operational efficiency of various truck components. Cummins is known for its commitment to quality and innovation in manufacturing components that meet the demanding requirements of commercial vehicles ¹.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of bolt characterized by its hexagonal head and flanged base. The hexagonal head allows for efficient tightening and loosening using a wrench, while the flange provides additional surface area for distribution of clamping force, reducing the risk of damage to the fastened material ². Within mechanical systems, these screws are used to secure components together, ensuring stability and reliability under various operational conditions.

Purpose and Role in Truck Operation

The 3678882 Hexagon Flange Head Cap Screw serves specific purposes within the context of a commercial truck. It is commonly used in applications where high clamping force and resistance to vibration are required. This screw supports critical systems such as engine mounts, transmission components, and chassis assemblies. By securely fastening these parts, it helps maintain the structural integrity and operational performance of the truck ³.

Key Features

The 3678882 Hexagon Flange Head Cap Screw boasts several key features that make it suitable for demanding applications. Its hexagonal head design allows for easy and precise tightening using standard tools. The flange at the base of the screw provides additional contact area, enhancing the distribution of clamping force and reducing the likelihood of stripping or damage to the fastened material. Additionally, the screw is typically made from high-strength materials, ensuring durability and resistance to wear and corrosion.

Benefits

Using the 3678882 Hexagon Flange Head Cap Screw offers several advantages. Its design contributes to enhanced durability, making it well-suited for the rigors of commercial truck operation. The flange helps resist vibration, which is crucial in maintaining secure fastenings over time. Furthermore, the screw’s ease of installation, thanks to its hexagonal head, allows for efficient assembly and maintenance procedures.

Installation and Usage

Proper installation of the 3678882 Hexagon Flange Head Cap Screw is vital to ensure its effectiveness and longevity. It is important to follow torque specifications provided by the manufacturer to achieve the correct clamping force without over-tightening, which could lead to damage. Using the appropriate wrench size for the hexagonal head ensures precise application of torque. Additionally, ensuring that the surfaces to be fastened are clean and free of debris will contribute to a secure and lasting connection.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws include loosening due to vibration and corrosion. Regular inspection and maintenance can help identify and address these problems early. If a screw appears loose, it should be re-tightened to the specified torque. In cases of corrosion, the affected screw may need to be replaced to maintain the integrity of the fastening. Applying an anti-seize compound during installation can help prevent corrosion and ease future removal.

Compatibility and Applications

The 3678882 Hexagon Flange Head Cap Screw is designed for use in commercial trucks, where it finds applications in engine mounts, transmission components, and chassis assemblies. Its robust design and high-strength material make it suitable for a variety of fastening tasks within these systems. Additionally, its versatility allows for potential use in other heavy-duty applications where secure and durable fastening is required.

Manufacturer - Cummins

Cummins is a renowned manufacturer in the automotive and heavy-duty truck industry, known for its high-quality components and innovative solutions. The company’s reputation is built on a commitment to excellence, reliability, and continuous improvement. Cummins’ products, including the 3678882 Hexagon Flange Head Cap Screw, are designed to meet the stringent demands of commercial vehicle operation, ensuring performance, durability, and safety ⁴.

Hexagon Flange Head Cap Screw (Part 3678882) in Cummins Engines

The Hexagon Flange Head Cap Screw, part number 3678882, is a component in several Cummins engine models. This part is integral to the assembly and maintenance of the engines, ensuring secure fastening and structural integrity. Below is a detailed description of how this part fits within various Cummins engine models:

ISX Series Engines

• ISX CM570
• ISX CM870
• ISX CM871

The Hexagon Flange Head Cap Screw is used in the ISX series engines to secure various components, including cylinder heads and engine blocks. Its design allows for a tight and reliable connection, essential for maintaining engine performance and safety.

ISX15 Series Engines

• ISX15 CM2250
• ISX15 CM2250 SN
• ISX15 CM2350 X101

In the ISX15 series engines, the part 3678882 is utilized in several key areas. It is commonly found in the fastening of the cylinder heads and other critical engine components. The screw’s flange head provides a larger surface area for torque application, ensuring that the connections remain secure under operational stresses.

QSX15 Series Engines

• QSX15 CM2250
• QSX15 CM2250 ECF
• QSX15 CM2350 X105

For the QSX15 series engines, the Hexagon Flange Head Cap Screw is employed in similar applications as in the ISX15 series. It is used to fasten components that require high torque and stability, such as the engine block and various auxiliary systems. The screw’s design ensures that these connections can withstand the rigors of heavy-duty operation.

X15 Series Engines

• X15 CM2350 X116B
• X15 CM2350 X123B
• X15 CM2450 X134B

In the X15 series engines, the part 3678882 is integral to the assembly of several engine components. Its use in securing the cylinder heads and other critical parts ensures that the engine maintains its structural integrity and operational efficiency. The screw’s flange head provides a robust interface for applying and maintaining the necessary torque.

The Hexagon Flange Head Cap Screw is a versatile and essential component across these Cummins engine models, ensuring that all fastened components remain securely in place under various operational conditions.

Role of Part 3678882 Hexagon Flange Head Cap Screw in Engine Systems

The part 3678882 Hexagon Flange Head Cap Screw is integral in securing various components within engine systems, ensuring stability and performance.

Camshaft and Camshaft Gear Assembly

In the camshaft and camshaft gear assembly, the Hexagon Flange Head Cap Screw is used to fasten the camshaft to the engine block or cylinder head. This secure attachment is essential for maintaining the precise alignment and timing of the camshaft, which directly influences valve operation and overall engine performance. The screw’s design ensures a robust connection that can withstand the high rotational forces and vibrations experienced during engine operation.

Gear Attachments

When it comes to gear attachments, particularly those associated with the camshaft, the Hexagon Flange Head Cap Screw plays a significant role. It is employed to secure the camshaft gear to the camshaft itself. This connection is vital for transmitting the rotational motion from the crankshaft to the camshaft, ensuring synchronized valve actuation. The screw’s flange head provides additional surface area for torque application, reducing the risk of stripping and enhancing the reliability of the gear attachment.

General Component Fastening

Beyond specific applications, the Hexagon Flange Head Cap Screw is widely used throughout engine systems for fastening various parts. Whether securing brackets, sensor mounts, or other ancillary components, this screw offers a dependable solution. Its hexagonal head allows for easy tightening and loosening using standard tools, facilitating maintenance and repairs. The cap design protects the screw from debris and contaminants, prolonging its service life and maintaining the integrity of the fastened components.

Performance Implications

The consistent and secure fastening provided by the Hexagon Flange Head Cap Screw contributes to the overall performance and reliability of engine systems. By ensuring that components remain firmly in place, it helps maintain the precise mechanical relationships necessary for optimal engine function. This, in turn, supports smooth operation, efficient power delivery, and reduced wear on moving parts.

Conclusion

The 3678882 Hexagon Flange Head Cap Screw is a critical component in the maintenance and operation of commercial trucks and Cummins engines. Its design and features ensure secure fastening, resistance to vibration, and durability under demanding conditions. Proper installation and maintenance of this screw are essential for the longevity and performance of the truck and engine systems.