3895438
Hexagon Flange Head Cap Screw
Cummins®

The Hexagon Flange Head Cap Screw, identified by Part #3895438, is a component manufactured by Cummins, a leader in the commercial truck industry. This screw is significant in the maintenance and operation of commercial trucks, providing reliable fastening solutions that contribute to the overall integrity and performance of truck assemblies.

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 ¹. Within mechanical systems, these screws serve to securely join components, ensuring structural stability and alignment.

Purpose and Role in Truck Operation

This Cummins part plays a role in the operation and maintenance of commercial trucks by providing secure fastening in various truck assemblies. It is commonly used in applications where vibration resistance and load distribution are crucial, such as in engine components, chassis parts, and other critical assemblies. Its design ensures that components remain firmly attached, contributing to the truck’s overall performance and safety ².

Key Features

The 3895438 features a hexagonal head that facilitates easy and precise tightening with standard tools. The flange at the base of the screw head enhances load distribution, reducing the risk of the screw sinking into softer materials. Additionally, the screw is crafted from high-quality materials that offer superior strength and durability, ensuring long-term performance in demanding truck environments ³.

Benefits

Utilizing this part offers several advantages. Its design enhances fastening security, providing a robust connection between components. The flange contributes to resistance against vibration loosening, a common issue in truck operations. Furthermore, the screw’s ease of installation and removal simplifies maintenance procedures, allowing for efficient truck upkeep.

Installation and Usage Guidelines

To ensure optimal performance and longevity, this part should be installed following specific guidelines. Begin by selecting the appropriate size and grade of screw for the application. Use a torque wrench to apply the recommended torque specification, ensuring the screw is tightened to the manufacturer’s specifications without over-tightening. Regularly inspect the screw and surrounding components for signs of wear or damage, and replace as necessary to maintain secure fastening.

Troubleshooting and Maintenance

Common issues with Hexagon Flange Head Cap Screws include loosening due to vibration and corrosion. To address these issues, periodically inspect screws for signs of movement or rust. If loosening is detected, re-tighten the screw to the specified torque. In cases of corrosion, consider replacing the screw to prevent further degradation. Regular maintenance and timely replacement of worn screws contribute to the reliable operation of truck assemblies.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a strong presence in the commercial truck industry, Cummins is committed to delivering quality and innovative solutions that enhance the performance and efficiency of trucks. The company’s extensive product line and dedication to customer satisfaction underscore its role as a trusted manufacturer in the industry.

Hexagon Flange Head Cap Screw (Part 3895438) in Cummins Engines

The Hexagon Flange Head Cap Screw (part number 3895438) is a component in various Cummins engine models. This part is designed to secure different parts within the engine assembly, ensuring structural integrity and proper functioning. Here’s how it fits into specific Cummins engines:

ISM Series Engines

• ISM CM570: The 3895438 screw is used to fasten components in the ISM CM570 engine, ensuring that parts remain tightly secured during operation.
• ISM CM570/870: This dual-engine model utilizes the screw to maintain the alignment and stability of its components.
• ISM CM876: In the ISM CM876, the screw is for securing various engine parts, contributing to the engine’s overall durability and performance.
• ISM11 CM876 SN: This variant also employs the 3895438 screw to ensure that critical engine components are fastened securely.

L10 Series Engines

• L10 CELECT: The screw is used in the L10 CELECT engine to fasten parts that require precise alignment and stability.
• L10 GAS: In the L10 GAS engine, the 3895438 screw helps in securing components that are vital for the engine’s operation.
• L10 MECHANICAL: This engine model also relies on the screw to ensure that parts are fastened securely, contributing to the engine’s overall performance.

M11 Series Engines

• M11 CELECT: The 3895438 screw is used in the M11 CELECT engine to fasten components that need to be tightly secured for optimal performance.
• M11 CELECT PLUS: This enhanced model also utilizes the screw to maintain the integrity of its components.
• M11 MECHANICAL: In the M11 MECHANICAL engine, the screw is crucial for securing parts that are essential for the engine’s operation.

QSM11 Series Engines

• QSM11 CM570: The screw is used in the QSM11 CM570 engine to fasten parts that require precise alignment and stability.
• QSM11 CM876: In the QSM11 CM876 engine, the 3895438 screw helps in securing components that are vital for the engine’s operation.

This screw is a versatile component that plays a role in maintaining the structural integrity and performance of various Cummins engine models. Its use across different engine series highlights its importance in ensuring that engine components are securely fastened, contributing to the overall reliability and efficiency of the engines.

Role of Part 3895438 Hexagon Flange Head Cap Screw in Engine Systems

In the intricate assembly of engine systems, the part 3895438 Hexagon Flange Head Cap Screw serves as a pivotal fastening element, ensuring the secure attachment and stability of various components.

Cylinder Block

Within the cylinder block, this screw is instrumental in securing the main bearing caps, which house the crankshaft bearings. Its robust design ensures that the caps remain firmly in place, allowing the crankshaft to rotate smoothly and efficiently. The screw’s flange head provides additional surface area for torque application, enhancing the security of the fastening.

Cylinder Block Kit

In a cylinder block kit, the part 3895438 screw is often used to fasten ancillary components such as gaskets and spacers. These components are essential for maintaining the proper alignment and sealing between the cylinder block and other engine parts. The screw’s hexagonal flange head allows for easy and precise tightening, ensuring that all components are correctly positioned.

Lubricating Pump Mounting Kit

The lubricating pump mounting kit relies on the part 3895438 screw to secure the pump to the engine block. This is vital for the pump’s stable operation, as it ensures consistent oil flow to critical engine components. The screw’s design prevents loosening over time, even under the dynamic conditions of engine operation.

Pump

When integrating the pump into the engine system, the part 3895438 screw plays a role in attaching the pump housing to the engine block or other mounting surfaces. This secure attachment is essential for the pump’s efficient operation, as it maintains the structural integrity of the pump and ensures it can withstand the pressures and vibrations inherent in engine operation.

Lubricating Oil System

In the lubricating oil system, the part 3895438 screw is used to fasten oil filters, pressure relief valves, and other components. These elements are crucial for maintaining the quality and pressure of the lubricating oil, which is essential for reducing friction and wear within the engine. The screw’s reliable fastening capability ensures that these components remain in place, contributing to the overall efficiency and longevity of the engine.

Conclusion

The 3895438 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 loosening, and ease of maintenance. By understanding its role and proper usage, technicians and engineers can contribute to the reliable and efficient performance of truck and engine assemblies.