3920164
Hexagon Head Cap Screw
Cummins®

The Cummins Hexagon Head Cap Screw, part number 3920164, is a specialized fastener designed for use in heavy-duty truck components. This screw is integral to the assembly and maintenance of various truck systems, ensuring secure fastening and reliable performance under demanding conditions.

Basic Concepts of Hexagon Head Cap Screws

Hexagon Head Cap Screws are characterized by a hexagonal head, which allows for efficient tightening and loosening using a wrench or socket. These screws convert rotational force into axial force to clamp components together securely. They are commonly made from steel or stainless steel, often coated with zinc or other protective finishes to enhance corrosion resistance and durability ¹.

Purpose of the 3920164 Hexagon Head Cap Screw in Truck Operations

The 3920164 Hexagon Head Cap Screw plays a significant role in the operation of heavy-duty trucks by providing secure fastening in various mechanical systems. Its applications include securing engine components, transmission parts, and chassis assemblies. The importance of secure fastening lies in ensuring the reliability and safety of truck components, which are subject to significant stress and varying conditions during operation ².

Key Features of the 3920164 Hexagon Head Cap Screw

The 3920164 Hexagon Head Cap Screw is distinguished by its hexagonal head, which offers a robust interface for wrenches and sockets, facilitating easy and precise tightening. The screw features precise threading that ensures a strong grip and resistance to loosening. Additionally, it may include special features such as a countersunk head for flush mounting or a corrosion-resistant coating to enhance performance and durability. Compared to other fasteners, the hexagonal head design provides superior torque application and reduces the risk of cam-out ³.

Benefits of Using the 3920164 Hexagon Head Cap Screw

Using the 3920164 Hexagon Head Cap Screw in truck maintenance and repair offers several advantages. Its design allows for ease of installation, ensuring that components are securely fastened without excessive force. The screw’s resistance to loosening under vibration and dynamic loads contributes to the longevity of truck components. Additionally, its durability under stress and varying conditions makes it a reliable choice for heavy-duty applications ⁴.

Installation and Usage Guidelines

Proper installation of the 3920164 Hexagon Head Cap Screw involves several steps. Begin by ensuring the mating surfaces are clean and free of debris. Use the appropriate wrench or socket to tighten the screw to the specified torque setting, which can be found in the truck’s maintenance manual. It is important to avoid over-tightening, which can damage threads or components. Recommended tools include a torque wrench for precise application of force and a socket set compatible with the screw’s hexagonal head ⁵.

Troubleshooting and Maintenance

Common issues with Hexagon Head Cap Screws include loosening due to vibration, corrosion, and wear. To address these issues, regularly inspect screws for signs of damage or corrosion. Maintenance practices such as applying a thread locker can help prevent loosening. If a screw shows signs of wear or failure, such as stripped threads or significant corrosion, it should be replaced to ensure the continued reliability of the truck’s components ⁶.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins is committed to quality and innovation in the automotive and heavy-duty truck industries. The company’s product range includes a variety of components designed to enhance the performance and reliability of vehicles, underscoring its role as a trusted manufacturer in the industry ⁷.

Cummins Hexagon Head Cap Screw 3920164 in Engine Applications

The Cummins Hexagon Head Cap Screw part number 3920164 is a critical component in various engine assemblies, ensuring secure fastening and structural integrity. This screw is designed to withstand high stress and provide reliable performance in demanding environments.

Engine Group: 6B5.9

In the 6B5.9 engine series, the 3920164 screw is utilized in several key areas. It is often employed in the engine block assembly, securing various components together to maintain alignment and stability. Additionally, this screw is frequently found in the cylinder head assembly, where it helps to fasten the head to the engine block, ensuring a tight seal and preventing leaks.

The precision engineering of the 3920164 screw ensures that it meets the stringent requirements of the 6B5.9 engine, providing durability and reliability under high-pressure conditions. Its use in these critical areas underscores its importance in the overall performance and longevity of the engine ⁸.

Role of Part 3920164 Hexagon Head Cap Screw in Engine Systems

The 3920164 Hexagon Head Cap Screw is a vital fastening component utilized in various engine systems to ensure the secure assembly of critical parts. Its application is widespread across different engine components, contributing to the overall performance and reliability of the engine.

Camshaft Assembly

In camshaft assemblies, the 3920164 Hexagon Head Cap Screw is employed to fasten the camshaft to the engine block or cylinder head. This secure attachment is essential for maintaining the precise alignment and operation of the camshaft, which directly influences valve timing and engine performance. The screw’s hexagonal head allows for efficient torque application, ensuring that the camshaft remains firmly in place under the high stresses and vibrations encountered during engine operation ⁹.

Performance Parts Integration

When integrating performance parts into an engine, such as upgraded camshafts, valve springs, or cylinder heads, the 3920164 Hexagon Head Cap Screw plays a significant role. These screws are often used to secure performance camshafts, ensuring they are correctly positioned and operate within specified tolerances. The robust design of the screw helps withstand the increased stresses and higher RPMs associated with performance modifications, contributing to the engine’s enhanced performance capabilities ¹⁰.

General Engine Component Fastening

Beyond specific components like the camshaft, the 3920164 Hexagon Head Cap Screw is also utilized in fastening various engine parts. This includes securing engine covers, attaching sensor brackets, and mounting ancillary components. The screw’s design ensures a strong and durable connection, which is essential for the integrity and functionality of the engine system ¹¹.

Contribution to Engine Performance

The reliable fastening provided by the 3920164 Hexagon Head Cap Screw is instrumental in maintaining the structural integrity of engine components. This, in turn, contributes to the engine’s overall performance by ensuring that all parts operate within their designed parameters. The screw’s ability to securely hold components in place under varying operating conditions helps prevent issues such as misalignment, component failure, and performance degradation ¹².

Conclusion

The 3920164 Hexagon Head Cap Screw is an indispensable component in engine systems, facilitating the secure assembly and operation of critical parts. Its application across various engine components underscores its importance in achieving and maintaining optimal engine performance.