3901859
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by part number 3901859, is a specialized fastener produced by Cummins, a leading manufacturer in the automotive and heavy-duty truck industries. This screw is integral to the assembly and maintenance of commercial trucks, ensuring secure and reliable fastening across various components.

Basic Concepts

A Hexagon Flange Head Cap Screw is a type of bolt characterized by its hexagonal head and flange feature. The hexagonal head allows for efficient torque application using standard tools, while the flange provides a bearing surface that distributes load and prevents the screw from sinking into the material. This design is particularly effective in fastening applications where both strength and stability are required.

Purpose and Role in Truck Operation

The 3901859 Hexagon Flange Head Cap Screw plays a significant role in the operation and maintenance of commercial trucks. It is commonly used in applications where high tensile strength and resistance to loosening are necessary. These applications include fastening engine components, securing chassis parts, and attaching body panels. The screw’s design ensures that critical truck components remain firmly in place, contributing to the overall safety and performance of the vehicle.

Key Features

The 3901859 Hexagon Flange Head Cap Screw boasts several key features that enhance its functionality and reliability. The hexagonal head design allows for easy and precise torque application, reducing the risk of over-tightening or stripping. The flange feature provides additional surface area, which helps distribute the load and prevents the screw from pulling through the material. The cap screw construction ensures a strong and secure connection, making it suitable for heavy-duty applications.

Benefits

Using the 3901859 Hexagon Flange Head Cap Screw in truck maintenance and repair offers several benefits. Its design provides enhanced fastening strength, making it ideal for applications where high tensile loads are present. The flange feature also offers resistance to loosening, ensuring that fastenings remain secure over time. Additionally, the screw’s durable construction allows it to withstand the rigors of heavy-duty conditions, contributing to the longevity and reliability of truck components.

Installation Guidelines

Proper installation of the 3901859 Hexagon Flange Head Cap Screw is crucial for ensuring secure and effective fastening. Begin by selecting the appropriate drill bit to create a pilot hole, which should be slightly smaller in diameter than the screw. Use a torque wrench to apply the recommended torque specifications, ensuring that the screw is tightened to the manufacturer’s guidelines. It is also advisable to use a thread lubricant to facilitate easier installation and reduce the risk of stripping. Following these guidelines will help achieve a secure and lasting fastening.

Troubleshooting and Maintenance

Common issues with the 3901859 Hexagon Flange Head Cap Screw may include loosening or corrosion. To address loosening, ensure that the screw is properly torqued during installation and periodically check fastenings for any signs of movement. In cases of corrosion, clean the affected area thoroughly and consider applying a corrosion-resistant coating to prevent further degradation. Regular maintenance and inspection will help prolong the screw’s lifespan and ensure optimal performance.

Cummins Overview

Cummins Inc. is a globally recognized leader in the design, manufacture, and distribution of engines and related technologies. With a history spanning over a century, Cummins has established a reputation for producing reliable and high-performance components. The company’s product range includes engines, filtration systems, and power generation equipment, all of which are designed with a commitment to quality and innovation. Cummins’ dedication to excellence ensures that their components, including the 3901859 Hexagon Flange Head Cap Screw, meet the demanding requirements of the automotive industry.

Hexagon Flange Head Cap Screw 3901859 in Cummins Engines

The Hexagon Flange Head Cap Screw 3901859, manufactured by Cummins, is a critical component in various Cummins engine models. This screw is designed to secure different parts within the engine, ensuring structural integrity and operational efficiency. Below is a detailed description of how this part fits into specific Cummins engines:

15N CM2380 M104B, 4B3.9, 6B5.9, 6C8.3, B5.9 CM2670 B166C, B5.9 G, B5.9 GAS PLUS CM556, B6.7 CM2670 B164C

In these engines, the Hexagon Flange Head Cap Screw 3901859 is used to fasten various components, including cylinder heads, valve covers, and other critical engine parts. Its design ensures a tight and secure fit, which is essential for maintaining the engine’s performance and preventing leaks.

F3.8 CM2620 F137B, G5.9, G5.9 CM558, G8.3, G8.3 CM558, GTA8.3 CM558

For the F3.8 CM2620 F137B, G5.9, G5.9 CM558, G8.3, G8.3 CM558, and GTA8.3 CM558 engines, the 3901859 screw is utilized in similar applications. It is often found securing the engine’s main components, such as the engine block and various auxiliary parts, ensuring that these parts remain firmly in place under operational stresses.

ISB/ISD6.7 CM2150 SN, ISB3.9 CM2220 B107, ISB5.9 CM2880 B127, ISF3.8 CM2220 AN, ISL CM2150, ISL CM554, ISL G CM2180

In the ISB/ISD6.7 CM2150 SN, ISB3.9 CM2220 B107, ISB5.9 CM2880 B127, ISF3.8 CM2220 AN, ISL CM2150, ISL CM554, and ISL G CM2180 engines, the 3901859 screw is integral to the assembly and maintenance of the engine. It is used to secure components such as the turbocharger housing, intake manifolds, and other critical parts, ensuring that these components are tightly fastened and properly aligned.

ISBE CM800, ISBE4 CM850, ISC CM850, ISC8.3 CM2250

For the ISBE CM800, ISBE4 CM850, ISC CM850, and ISC8.3 CM2250 engines, the 3901859 screw is employed in securing the engine’s structural components. This includes fastening parts such as the engine block, cylinder heads, and other critical assemblies, ensuring that the engine maintains its structural integrity and operational efficiency.

The Hexagon Flange Head Cap Screw 3901859 is a versatile and essential component in various Cummins engine models, ensuring that critical parts are securely fastened and properly aligned.

Hexagon Flange Head Cap Screw (Part 3901859) Component Usage

The Hexagon Flange Head Cap Screw, identified by part number 3901859, is a versatile fastener utilized in various engine systems to ensure secure and reliable connections between components. Its application spans across multiple areas within the engine assembly, contributing to the overall stability and functionality of the engine.

Adapter and Front Drive Arrangement

In the adapter and front drive arrangement, the Hexagon Flange Head Cap Screw is employed to fasten the adapter to the front drive components. This secure attachment is essential for transmitting power efficiently from the engine to the drivetrain, ensuring smooth operation and reducing the risk of component misalignment or failure.

Oil Fill and Compressor Components

When it comes to the oil fill system and compressor components, this screw plays a significant role in maintaining the integrity of the connections. It is used to secure the oil fill cap to the engine block, ensuring a tight seal that prevents oil leaks. Similarly, in compressor assemblies, it fastens the compressor housing to the engine, contributing to the efficient compression of air and the overall performance of the engine.

Cover and Cylinder Block

The Hexagon Flange Head Cap Screw is also integral in attaching covers to the cylinder block. Whether it’s the valve cover or the timing cover, these screws ensure that the covers are securely fastened, protecting the internal components from contaminants and maintaining the engine’s operational environment.

Hand Hole and Damper Vibration

In areas requiring access for maintenance, such as hand holes, these screws provide a secure yet easily removable fastening solution. Additionally, in damper vibration systems, they are used to attach the damper to the engine, helping to absorb vibrations and reduce noise, thereby enhancing the engine’s longevity and performance.

Engine Cooling Fan Shroud and Fuel Pump Mounting

The screw is utilized in the engine cooling fan shroud to secure the shroud to the engine, ensuring efficient airflow over the engine components for cooling. In fuel pump mounting applications, it fastens the fuel pump to the engine or fuel system, ensuring a stable supply of fuel under various operating conditions.

Oil Pan and Pulley Attachments

For the oil pan, the Hexagon Flange Head Cap Screw is used to secure the pan to the engine block, providing a containment vessel for the engine oil. In pulley attachments, particularly those related to the crankshaft, these screws ensure that the pulleys are securely fastened, allowing for the efficient transfer of rotational force throughout the engine system.

Front and Rear Engine Support

Lastly, in the front and rear engine support structures, these screws are used to secure the engine to the vehicle’s frame. This application is vital for maintaining the engine’s position within the vehicle, absorbing operational stresses, and ensuring the engine’s stability during operation.

The Hexagon Flange Head Cap Screw (part 3901859) is a fundamental component in engine systems, providing secure and reliable fastening across a wide range of applications. Its role in connecting and securing various engine components underscores its importance in maintaining engine integrity and performance.

Conclusion

The 3901859 Hexagon Flange Head Cap Screw is a critical component in the automotive and heavy-duty truck industries, particularly for Cummins engines. Its design and features make it suitable for a wide range of applications, ensuring secure and reliable fastening of critical engine components. Proper installation and maintenance of this screw are essential for the optimal performance and longevity of truck components.