3918153
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by Part #3918153, is a component manufactured by Cummins, a well-regarded name in the automotive industry. This screw is significant in heavy-duty truck applications due to its robust design and reliable performance. Cummins, known for its high-quality components, ensures that this part meets the demanding requirements of heavy-duty truck operations.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of fastener characterized by its hexagonal head and flanged base. The hexagonal head allows for efficient torque application using standard tools, while the flange provides additional surface area to distribute load and prevent the screw from sinking into the material. In mechanical systems, this screw is used to secure components together, ensuring structural integrity and reliable operation ¹.

Purpose and Role in Truck Operation

This Cummins part plays a specific role in the operation of heavy-duty trucks. It is utilized in various truck components where secure fastening is required. This includes applications in the engine, transmission, and chassis, where it helps maintain the alignment and integrity of critical parts. Its design ensures that components remain firmly attached under the dynamic conditions experienced by heavy-duty trucks.

Key Features

Several key features contribute to the effectiveness and durability of the Hexagon Flange Head Cap Screw. The hexagonal head design allows for precise torque application, reducing the risk of over-tightening or stripping. The flange characteristic provides additional bearing surface, enhancing the screw’s ability to withstand vibrational forces. Additionally, the material properties of the screw, typically high-strength steel, ensure it can endure the rigors of heavy-duty truck environments ².

Benefits

Using the Hexagon Flange Head Cap Screw in truck maintenance and assembly offers several benefits. Its design enhances security by providing a stable and reliable fastening solution. The ease of installation is another advantage, as the hexagonal head allows for straightforward application using common tools. Furthermore, the screw’s resistance to loosening ensures that components remain securely fastened over time, reducing the need for frequent re-tightening.

Installation and Usage

Proper installation of the Hexagon Flange Head Cap Screw is vital to ensure optimal performance and longevity. It is recommended to follow torque specifications provided by the manufacturer to avoid over-tightening, which can lead to damage, or under-tightening, which can compromise security. Best practices include using the correct tool for application and ensuring that the screw is installed in a clean, undamaged thread to maximize holding power ³.

Troubleshooting and Maintenance

Common issues related to the Hexagon Flange Head Cap Screw may include corrosion or over-tightening. Regular inspection for signs of wear or damage is recommended to identify potential problems early. Maintenance practices such as applying an appropriate anti-corrosion coating and periodically checking torque levels can help prevent failures and ensure continued reliability.

Cummins: Manufacturer Overview

Cummins is a reputable manufacturer with a long-standing history in the automotive industry. Known for its commitment to producing high-quality components, Cummins has established a strong reputation for reliability and performance. The company’s dedication to innovation and excellence is reflected in its wide range of products, including the Hexagon Flange Head Cap Screw, which is designed to meet the rigorous demands of heavy-duty truck applications.

Hexagon Flange Head Cap Screw 3918153 in Cummins Engines

The 3918153, manufactured by Cummins, is a critical component in various Cummins engine models. This part is designed to secure and hold together different engine parts, ensuring the integrity and functionality of the engine. Below is a detailed description of how this screw fits into specific Cummins engines:

Engines with 6B5.9 and 6C8.3

The 6B5.9 and 6C8.3 engines utilize the 3918153 screw in several key areas. These engines, known for their robust performance, require reliable fastening solutions to maintain their structural integrity. The screw is often used in securing engine covers, brackets, and other critical components, ensuring that these parts remain firmly attached under various operational conditions.

Engines with B4.5 and B5.9

In the B4.5 and B5.9 engines, the 3918153 screw is integral to the assembly of various engine parts. These engines, which are part of the B Series, benefit from the screw’s ability to provide a secure and stable connection. The screw is typically used in applications where high torque and durability are essential, such as fastening engine blocks and other heavy-duty components.

Engines with B6.7

The B6.7 engine series, including variants like B6.7 CM2350 B135B, B6.7 CM2670 B153B, B6.7 CM2670 B164C, and B6.7 G CMOH6.0 B125, extensively uses the 3918153 screw. This engine, known for its versatility and power, requires precise fastening to maintain its operational efficiency. The screw is used in securing various engine components, including those related to the fuel injection system, turbocharger, and other critical assemblies.

Engines with C8.3

The C8.3 engine, which includes the C8.3 G variant, employs the 3918153 screw in several critical fastening applications. This engine, designed for heavy-duty applications, relies on the screw to ensure that components such as the engine block, valve covers, and other structural parts remain securely fastened.

Engines with D4.0

The D4.0 engine, specifically the D4.0 CM2620 D103B, uses the 3918153 screw in various fastening applications. This engine, known for its reliability and performance, requires the screw to secure components that are subjected to high stress and vibration.

Engines with F3.8 and F4.5

The F3.8 and F4.5 engine series, including variants like F3.8 CM2350 F120B, F3.8 CM2350 F128C, F3.8 CM2620 F137B, F3.8 F102, F4.5 CM2620 F139B, and F4.5 CM2620 F141C, utilize the 3918153 screw in several key areas. These engines, which are part of the F Series, benefit from the screw’s ability to provide a secure and stable connection. The screw is typically used in applications where high torque and durability are essential, such as fastening engine blocks and other heavy-duty components.

Engines with G5.9

The G5.9 engine, specifically the G5.9 CM558, uses the 3918153 screw in various fastening applications. This engine, known for its reliability and performance, requires the screw to secure components that are subjected to high stress and vibration.

Engines with ISB

The ISB engine series, including variants like ISB CM2150, ISB/ISD4.5 CM2150 B119, ISB/ISD6.7 CM2150 SN, ISB4.5 CM2350 B104, ISB5.9G CM2180, ISB6.7 CM2250, and ISB6.7 CM2350 B101, extensively uses the 3918153 screw. This engine, known for its versatility and power, requires precise fastening to maintain its operational efficiency. The screw is used in securing various engine components, including those related to the fuel injection system, turbocharger, and other critical assemblies.

Role of Part 3918153 Hexagon Flange Head Cap Screw in Engine Systems

The 3918153 is integral to the assembly and securement of various components within engine systems. Its design allows for a robust connection, ensuring that parts remain firmly in place under operational stress.

Cover and Cylinder Block Assembly

In the assembly of the engine cover and cylinder block, the Hexagon Flange Head Cap Screw provides the necessary tension to keep these components aligned and sealed. This is particularly important for maintaining the integrity of the combustion chamber and ensuring that no gases escape during operation.

Housing Components

For housing units such as the flywheel housing, rear gear housing, and NEF rear gear housing, the Hexagon Flange Head Cap Screw plays a significant role. It secures these housings to the engine frame, preventing any movement that could lead to misalignment or damage to internal components.

Intercooler and Kit Integration

When integrating the intercooler and associated kits, the Hexagon Flange Head Cap Screw ensures that these components are mounted securely. This is essential for maintaining the efficiency of the intercooler in reducing the temperature of the air entering the engine, which is vital for optimal performance.

Long Block and Short Block Kit

In the context of long block and short block kits, the Hexagon Flange Head Cap Screw is used to fasten various sub-components. This includes securing the crankshaft, connecting rods, and pistons within the cylinder block, ensuring that all moving parts operate smoothly and efficiently.

Mounting Applications

The screw is also employed in the mounting of peripheral components such as the alternator, refrigerant compressor, and starting motor. Secure mounting is essential to prevent vibration-induced loosening, which could lead to electrical or mechanical failures.

Sensor and Oil Pressure Management

For sensors like the oil pressure sensor, the Hexagon Flange Head Cap Screw ensures a tight and leak-free connection. This is important for accurate readings and maintaining proper lubrication within the engine.

Conclusion

In summary, the 3918153 is a versatile fastener that contributes to the structural integrity and operational efficiency of various engine components. Its application across different parts of the engine system underscores its importance in maintaining the overall performance and reliability of the engine.